./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:05:49,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:05:49,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:05:49,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:05:49,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:05:49,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:05:49,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:05:49,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:05:49,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:05:49,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:05:49,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:05:49,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:05:49,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:05:49,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:05:49,681 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:05:49,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:05:49,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:05:49,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:05:49,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:05:49,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:05:49,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:05:49,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:05:49,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:05:49,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:05:49,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:05:49,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:05:49,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:05:49,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:05:49,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:05:49,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:05:49,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:05:49,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:05:49,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:49,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:05:49,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:05:49,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:05:49,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:05:49,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:05:49,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:05:49,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:05:49,686 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:05:49,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:05:49,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:05:49,687 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:05:49,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:05:49,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:05:49,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:05:49,875 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:05:49,881 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:05:49,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.yml/witness.yml [2024-06-04 14:05:50,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:05:50,026 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:05:50,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-04 14:05:50,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:05:51,219 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:05:51,222 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-04 14:05:51,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab95217a/44d0006249944b9b806b856ed8d23a67/FLAGa4a1fea51 [2024-06-04 14:05:51,255 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab95217a/44d0006249944b9b806b856ed8d23a67 [2024-06-04 14:05:51,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:05:51,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:05:51,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:51,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:05:51,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:05:51,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:50" (1/2) ... [2024-06-04 14:05:51,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c89ca0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:50" (1/2) ... [2024-06-04 14:05:51,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78c9fd9e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (2/2) ... [2024-06-04 14:05:51,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c89ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (2/2) ... [2024-06-04 14:05:51,267 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:05:51,349 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:05:51,350 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-04 14:05:51,350 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-04 14:05:51,350 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:05:51,351 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-04 14:05:51,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:05:51,683 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:51,699 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:05:51,805 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:51,845 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:05:51,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51 WrapperNode [2024-06-04 14:05:51,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:51,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:51,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:05:51,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:05:51,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,918 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-04 14:05:51,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:51,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:05:51,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:05:51,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:05:51,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,936 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,955 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 14:05:51,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:51,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:05:51,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:05:52,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:05:52,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:05:52,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (1/1) ... [2024-06-04 14:05:52,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:52,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:52,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 14:05:52,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 14:05:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:05:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:05:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:05:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:05:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:05:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:05:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:05:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:05:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:05:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:05:52,060 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:05:52,181 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:05:52,183 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:05:52,537 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:05:52,537 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:05:52,701 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:05:52,701 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:05:52,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:52 BoogieIcfgContainer [2024-06-04 14:05:52,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:05:52,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:05:52,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:05:52,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:05:52,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:50" (1/4) ... [2024-06-04 14:05:52,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0bbeeb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:05:51" (2/4) ... [2024-06-04 14:05:52,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0bbeeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51" (3/4) ... [2024-06-04 14:05:52,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0bbeeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:52" (4/4) ... [2024-06-04 14:05:52,715 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-04 14:05:52,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:05:52,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:05:52,729 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:05:52,759 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:05:52,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:05:52,830 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-04 14:05:52,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:52,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:05:52,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:05:52,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-04 14:05:52,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:05:52,871 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ec6f727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:05:52,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:05:52,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:05:52,874 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:05:52,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:52,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:52,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:05:52,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:52,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash -175134480, now seen corresponding path program 1 times [2024-06-04 14:05:52,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:52,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065549837] [2024-06-04 14:05:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:52,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:53,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065549837] [2024-06-04 14:05:53,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065549837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:53,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:53,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:05:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419425690] [2024-06-04 14:05:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:53,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:05:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:05:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:05:53,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:05:53,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:53,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:53,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:05:53,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:53,959 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-04 14:05:53,959 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 14:05:53,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 392 events. 216/392 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1458 event pairs, 133 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-04 14:05:53,965 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-04 14:05:53,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 127 flow [2024-06-04 14:05:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:05:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:05:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-04 14:05:53,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-04 14:05:53,976 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2024-06-04 14:05:53,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 127 flow [2024-06-04 14:05:53,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:53,980 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-04 14:05:53,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-04 14:05:53,984 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-04 14:05:53,984 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-04 14:05:53,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:53,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:53,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:05:53,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:53,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash -800495793, now seen corresponding path program 1 times [2024-06-04 14:05:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:53,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841831108] [2024-06-04 14:05:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:53,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:54,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:54,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841831108] [2024-06-04 14:05:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841831108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:54,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:54,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049496079] [2024-06-04 14:05:54,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:54,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:54,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:05:54,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:54,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:05:54,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:54,664 INFO L124 PetriNetUnfolderBase]: 207/377 cut-off events. [2024-06-04 14:05:54,664 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-06-04 14:05:54,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 377 events. 207/377 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 76 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-04 14:05:54,673 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 31 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-06-04 14:05:54,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 177 flow [2024-06-04 14:05:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:05:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:05:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-04 14:05:54,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 14:05:54,676 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 66 transitions. [2024-06-04 14:05:54,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 177 flow [2024-06-04 14:05:54,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:54,679 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-04 14:05:54,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-04 14:05:54,681 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-04 14:05:54,681 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-04 14:05:54,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:54,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:05:54,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:54,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:54,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1926644317, now seen corresponding path program 1 times [2024-06-04 14:05:54,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003785844] [2024-06-04 14:05:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:55,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003785844] [2024-06-04 14:05:55,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003785844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:55,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:55,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:55,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840049959] [2024-06-04 14:05:55,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:55,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:55,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:05:55,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:55,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:55,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:05:55,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:55,524 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-04 14:05:55,524 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-04 14:05:55,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 433 events. 243/433 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1576 event pairs, 144 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-04 14:05:55,527 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-04 14:05:55,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 185 flow [2024-06-04 14:05:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-04 14:05:55,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:05:55,529 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 58 transitions. [2024-06-04 14:05:55,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 185 flow [2024-06-04 14:05:55,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:55,531 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 117 flow [2024-06-04 14:05:55,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-04 14:05:55,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-04 14:05:55,533 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 117 flow [2024-06-04 14:05:55,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:55,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:55,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:05:55,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:55,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 881829901, now seen corresponding path program 1 times [2024-06-04 14:05:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562355157] [2024-06-04 14:05:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:55,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:56,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:56,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562355157] [2024-06-04 14:05:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562355157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:56,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:56,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:05:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004536157] [2024-06-04 14:05:56,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:56,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:05:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:05:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:05:56,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:05:56,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 117 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:56,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:56,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:05:56,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:57,077 INFO L124 PetriNetUnfolderBase]: 239/425 cut-off events. [2024-06-04 14:05:57,078 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-06-04 14:05:57,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 425 events. 239/425 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1491 event pairs, 79 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-04 14:05:57,080 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-04 14:05:57,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 223 flow [2024-06-04 14:05:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-04 14:05:57,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-04 14:05:57,083 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 117 flow. Second operand 5 states and 71 transitions. [2024-06-04 14:05:57,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 223 flow [2024-06-04 14:05:57,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 212 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:57,085 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 116 flow [2024-06-04 14:05:57,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-04 14:05:57,086 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-06-04 14:05:57,086 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 116 flow [2024-06-04 14:05:57,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:57,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:05:57,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:57,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 427699862, now seen corresponding path program 1 times [2024-06-04 14:05:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:57,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389755114] [2024-06-04 14:05:57,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:57,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:57,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389755114] [2024-06-04 14:05:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389755114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:57,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:57,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49819249] [2024-06-04 14:05:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:57,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:57,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:05:57,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:57,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:05:57,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:57,853 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-04 14:05:57,853 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-06-04 14:05:57,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 422 events. 237/422 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1531 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1176. Up to 407 conditions per place. [2024-06-04 14:05:57,855 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 28 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-04 14:05:57,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 210 flow [2024-06-04 14:05:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-04 14:05:57,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:05:57,856 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 116 flow. Second operand 6 states and 65 transitions. [2024-06-04 14:05:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 210 flow [2024-06-04 14:05:57,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:57,858 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 135 flow [2024-06-04 14:05:57,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-04 14:05:57,859 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-04 14:05:57,859 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 135 flow [2024-06-04 14:05:57,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:57,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:57,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:05:57,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:57,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1889463618, now seen corresponding path program 1 times [2024-06-04 14:05:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:57,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534283784] [2024-06-04 14:05:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534283784] [2024-06-04 14:05:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534283784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:58,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:58,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:58,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076529754] [2024-06-04 14:05:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:58,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:58,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:58,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:58,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:58,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:05:58,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:58,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:05:58,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:58,613 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-04 14:05:58,614 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-04 14:05:58,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 432 events. 243/432 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1527 event pairs, 82 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1272. Up to 385 conditions per place. [2024-06-04 14:05:58,616 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-04 14:05:58,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 283 flow [2024-06-04 14:05:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-04 14:05:58,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-04 14:05:58,618 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 135 flow. Second operand 6 states and 73 transitions. [2024-06-04 14:05:58,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 283 flow [2024-06-04 14:05:58,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 266 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:58,624 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 170 flow [2024-06-04 14:05:58,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-04 14:05:58,627 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-04 14:05:58,627 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 170 flow [2024-06-04 14:05:58,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:58,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:58,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:05:58,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:58,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash 398810212, now seen corresponding path program 2 times [2024-06-04 14:05:58,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283621494] [2024-06-04 14:05:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:59,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:59,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283621494] [2024-06-04 14:05:59,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283621494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:59,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:59,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:59,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212540760] [2024-06-04 14:05:59,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:59,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:59,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:05:59,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:59,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:59,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:05:59,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:59,433 INFO L124 PetriNetUnfolderBase]: 239/428 cut-off events. [2024-06-04 14:05:59,433 INFO L125 PetriNetUnfolderBase]: For 1102/1104 co-relation queries the response was YES. [2024-06-04 14:05:59,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 428 events. 239/428 cut-off events. For 1102/1104 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1523 event pairs, 88 based on Foata normal form. 4/432 useless extension candidates. Maximal degree in co-relation 1363. Up to 382 conditions per place. [2024-06-04 14:05:59,436 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2024-06-04 14:05:59,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 285 flow [2024-06-04 14:05:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 14:05:59,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:05:59,437 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 170 flow. Second operand 6 states and 70 transitions. [2024-06-04 14:05:59,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 285 flow [2024-06-04 14:05:59,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 275 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:59,439 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 192 flow [2024-06-04 14:05:59,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-04 14:05:59,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-04 14:05:59,440 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 192 flow [2024-06-04 14:05:59,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:59,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:59,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:05:59,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:59,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash 373794700, now seen corresponding path program 1 times [2024-06-04 14:05:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086223067] [2024-06-04 14:05:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:00,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:00,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086223067] [2024-06-04 14:06:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086223067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:00,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:00,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577063826] [2024-06-04 14:06:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:00,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:00,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:00,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 192 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:00,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:00,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:00,321 INFO L124 PetriNetUnfolderBase]: 237/423 cut-off events. [2024-06-04 14:06:00,321 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2024-06-04 14:06:00,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 423 events. 237/423 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 99 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1415. Up to 405 conditions per place. [2024-06-04 14:06:00,323 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-04 14:06:00,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 308 flow [2024-06-04 14:06:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-04 14:06:00,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2024-06-04 14:06:00,325 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 192 flow. Second operand 7 states and 73 transitions. [2024-06-04 14:06:00,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 308 flow [2024-06-04 14:06:00,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:00,327 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 216 flow [2024-06-04 14:06:00,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-06-04 14:06:00,329 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-04 14:06:00,329 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 216 flow [2024-06-04 14:06:00,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:00,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:00,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:06:00,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:00,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1304893771, now seen corresponding path program 1 times [2024-06-04 14:06:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:00,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495584446] [2024-06-04 14:06:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:00,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495584446] [2024-06-04 14:06:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495584446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:00,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160924868] [2024-06-04 14:06:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:00,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:00,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:00,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:00,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:00,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:00,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:01,149 INFO L124 PetriNetUnfolderBase]: 243/434 cut-off events. [2024-06-04 14:06:01,149 INFO L125 PetriNetUnfolderBase]: For 1763/1765 co-relation queries the response was YES. [2024-06-04 14:06:01,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 434 events. 243/434 cut-off events. For 1763/1765 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1543 event pairs, 85 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 1514. Up to 383 conditions per place. [2024-06-04 14:06:01,153 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2024-06-04 14:06:01,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 387 flow [2024-06-04 14:06:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-04 14:06:01,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-04 14:06:01,154 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 216 flow. Second operand 7 states and 80 transitions. [2024-06-04 14:06:01,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 387 flow [2024-06-04 14:06:01,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 364 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:01,158 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 283 flow [2024-06-04 14:06:01,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-04 14:06:01,158 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-04 14:06:01,159 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 283 flow [2024-06-04 14:06:01,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:01,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:01,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:01,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:06:01,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:01,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash -521517571, now seen corresponding path program 2 times [2024-06-04 14:06:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:01,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415836652] [2024-06-04 14:06:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:01,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415836652] [2024-06-04 14:06:01,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415836652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:01,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:01,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:01,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299955178] [2024-06-04 14:06:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:01,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:01,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:01,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:01,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:01,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:01,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:02,008 INFO L124 PetriNetUnfolderBase]: 249/445 cut-off events. [2024-06-04 14:06:02,008 INFO L125 PetriNetUnfolderBase]: For 2282/2284 co-relation queries the response was YES. [2024-06-04 14:06:02,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 445 events. 249/445 cut-off events. For 2282/2284 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1605 event pairs, 81 based on Foata normal form. 4/449 useless extension candidates. Maximal degree in co-relation 1714. Up to 371 conditions per place. [2024-06-04 14:06:02,011 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2024-06-04 14:06:02,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 480 flow [2024-06-04 14:06:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 14:06:02,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-04 14:06:02,012 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 283 flow. Second operand 7 states and 81 transitions. [2024-06-04 14:06:02,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 480 flow [2024-06-04 14:06:02,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 464 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:02,016 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 342 flow [2024-06-04 14:06:02,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-04 14:06:02,017 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-04 14:06:02,017 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 342 flow [2024-06-04 14:06:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:02,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:02,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:02,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:06:02,018 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:02,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:02,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1297542121, now seen corresponding path program 3 times [2024-06-04 14:06:02,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:02,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423750213] [2024-06-04 14:06:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:02,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:02,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:02,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423750213] [2024-06-04 14:06:02,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423750213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:02,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:02,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973116492] [2024-06-04 14:06:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:02,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:02,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:02,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:02,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:02,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:02,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:02,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:02,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:02,865 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-04 14:06:02,865 INFO L125 PetriNetUnfolderBase]: For 2818/2820 co-relation queries the response was YES. [2024-06-04 14:06:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 447 events. 250/447 cut-off events. For 2818/2820 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1609 event pairs, 86 based on Foata normal form. 4/451 useless extension candidates. Maximal degree in co-relation 1813. Up to 395 conditions per place. [2024-06-04 14:06:02,868 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 43 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-04 14:06:02,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 505 flow [2024-06-04 14:06:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-04 14:06:02,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-04 14:06:02,869 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 342 flow. Second operand 7 states and 78 transitions. [2024-06-04 14:06:02,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 505 flow [2024-06-04 14:06:02,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 476 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:02,872 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 382 flow [2024-06-04 14:06:02,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2024-06-04 14:06:02,873 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-04 14:06:02,873 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 382 flow [2024-06-04 14:06:02,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:02,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:02,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:02,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:06:02,874 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:02,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1297265291, now seen corresponding path program 1 times [2024-06-04 14:06:02,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:02,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49899754] [2024-06-04 14:06:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:04,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:04,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49899754] [2024-06-04 14:06:04,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49899754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:04,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225983430] [2024-06-04 14:06:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:04,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:04,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:04,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 382 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:04,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:04,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:04,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:04,406 INFO L124 PetriNetUnfolderBase]: 248/442 cut-off events. [2024-06-04 14:06:04,407 INFO L125 PetriNetUnfolderBase]: For 3074/3074 co-relation queries the response was YES. [2024-06-04 14:06:04,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 442 events. 248/442 cut-off events. For 3074/3074 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1580 event pairs, 77 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1866. Up to 421 conditions per place. [2024-06-04 14:06:04,409 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-04 14:06:04,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 536 flow [2024-06-04 14:06:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:04,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-04 14:06:04,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-04 14:06:04,411 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 382 flow. Second operand 8 states and 81 transitions. [2024-06-04 14:06:04,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 536 flow [2024-06-04 14:06:04,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 513 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:04,414 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 404 flow [2024-06-04 14:06:04,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=404, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-06-04 14:06:04,415 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2024-06-04 14:06:04,415 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 404 flow [2024-06-04 14:06:04,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:04,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:04,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:04,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:06:04,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:04,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash 996471487, now seen corresponding path program 1 times [2024-06-04 14:06:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:04,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973330325] [2024-06-04 14:06:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973330325] [2024-06-04 14:06:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973330325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:05,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:05,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508262362] [2024-06-04 14:06:05,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:05,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:05,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:05,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 404 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:05,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:05,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:05,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:05,598 INFO L124 PetriNetUnfolderBase]: 254/452 cut-off events. [2024-06-04 14:06:05,598 INFO L125 PetriNetUnfolderBase]: For 3569/3569 co-relation queries the response was YES. [2024-06-04 14:06:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 452 events. 254/452 cut-off events. For 3569/3569 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1612 event pairs, 55 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 1959. Up to 399 conditions per place. [2024-06-04 14:06:05,601 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 60 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-04 14:06:05,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 592 flow [2024-06-04 14:06:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:05,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-04 14:06:05,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.354978354978355 [2024-06-04 14:06:05,602 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 404 flow. Second operand 7 states and 82 transitions. [2024-06-04 14:06:05,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 592 flow [2024-06-04 14:06:05,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 563 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:05,606 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 416 flow [2024-06-04 14:06:05,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-04 14:06:05,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-04 14:06:05,607 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 416 flow [2024-06-04 14:06:05,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:05,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:05,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:05,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:06:05,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:05,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1008512835, now seen corresponding path program 1 times [2024-06-04 14:06:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083701521] [2024-06-04 14:06:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:06,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:06,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083701521] [2024-06-04 14:06:06,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083701521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:06,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:06,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781164911] [2024-06-04 14:06:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:06,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:06,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 416 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:06,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:06,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:06,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:06,558 INFO L124 PetriNetUnfolderBase]: 257/457 cut-off events. [2024-06-04 14:06:06,559 INFO L125 PetriNetUnfolderBase]: For 4096/4096 co-relation queries the response was YES. [2024-06-04 14:06:06,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 457 events. 257/457 cut-off events. For 4096/4096 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1653 event pairs, 75 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2066. Up to 404 conditions per place. [2024-06-04 14:06:06,562 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 51 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2024-06-04 14:06:06,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 602 flow [2024-06-04 14:06:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 14:06:06,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-04 14:06:06,563 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 416 flow. Second operand 7 states and 81 transitions. [2024-06-04 14:06:06,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 602 flow [2024-06-04 14:06:06,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 556 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:06,568 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 436 flow [2024-06-04 14:06:06,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-04 14:06:06,570 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-04 14:06:06,570 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 436 flow [2024-06-04 14:06:06,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:06,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:06,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:06,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:06:06,571 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:06,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1004044371, now seen corresponding path program 2 times [2024-06-04 14:06:06,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:06,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346585504] [2024-06-04 14:06:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:06,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:07,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:07,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346585504] [2024-06-04 14:06:07,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346585504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:07,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:07,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773544258] [2024-06-04 14:06:07,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:07,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:07,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:07,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:07,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:07,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:07,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 436 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:07,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:07,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:07,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:07,652 INFO L124 PetriNetUnfolderBase]: 263/467 cut-off events. [2024-06-04 14:06:07,653 INFO L125 PetriNetUnfolderBase]: For 4714/4714 co-relation queries the response was YES. [2024-06-04 14:06:07,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 467 events. 263/467 cut-off events. For 4714/4714 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1689 event pairs, 55 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2142. Up to 382 conditions per place. [2024-06-04 14:06:07,656 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-04 14:06:07,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 78 transitions, 676 flow [2024-06-04 14:06:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-04 14:06:07,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-04 14:06:07,657 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 436 flow. Second operand 7 states and 86 transitions. [2024-06-04 14:06:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 78 transitions, 676 flow [2024-06-04 14:06:07,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 640 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:07,665 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 477 flow [2024-06-04 14:06:07,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-04 14:06:07,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-04 14:06:07,666 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 477 flow [2024-06-04 14:06:07,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:07,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:07,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:06:07,667 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:07,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash 996656061, now seen corresponding path program 1 times [2024-06-04 14:06:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615238409] [2024-06-04 14:06:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:08,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615238409] [2024-06-04 14:06:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615238409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:08,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:08,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198330720] [2024-06-04 14:06:08,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:08,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:08,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:08,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:08,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:08,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:08,663 INFO L124 PetriNetUnfolderBase]: 269/478 cut-off events. [2024-06-04 14:06:08,663 INFO L125 PetriNetUnfolderBase]: For 5473/5475 co-relation queries the response was YES. [2024-06-04 14:06:08,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 478 events. 269/478 cut-off events. For 5473/5475 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1751 event pairs, 80 based on Foata normal form. 4/482 useless extension candidates. Maximal degree in co-relation 2260. Up to 419 conditions per place. [2024-06-04 14:06:08,667 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2024-06-04 14:06:08,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 681 flow [2024-06-04 14:06:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 14:06:08,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371212121212121 [2024-06-04 14:06:08,668 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 477 flow. Second operand 8 states and 89 transitions. [2024-06-04 14:06:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 681 flow [2024-06-04 14:06:08,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 657 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:08,674 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 514 flow [2024-06-04 14:06:08,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-04 14:06:08,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-04 14:06:08,674 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 514 flow [2024-06-04 14:06:08,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:08,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:08,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:08,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:06:08,675 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:08,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1004551139, now seen corresponding path program 2 times [2024-06-04 14:06:08,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:08,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726359087] [2024-06-04 14:06:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:08,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:09,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:09,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726359087] [2024-06-04 14:06:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726359087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:09,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:09,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:09,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841256406] [2024-06-04 14:06:09,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:09,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:09,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:09,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:09,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:09,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:09,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:09,675 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-04 14:06:09,675 INFO L125 PetriNetUnfolderBase]: For 6160/6162 co-relation queries the response was YES. [2024-06-04 14:06:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 489 events. 275/489 cut-off events. For 6160/6162 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1794 event pairs, 83 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 2407. Up to 429 conditions per place. [2024-06-04 14:06:09,678 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-04 14:06:09,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 712 flow [2024-06-04 14:06:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 14:06:09,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 14:06:09,679 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 514 flow. Second operand 8 states and 87 transitions. [2024-06-04 14:06:09,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 712 flow [2024-06-04 14:06:09,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 667 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:09,685 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 532 flow [2024-06-04 14:06:09,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-04 14:06:09,685 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-04 14:06:09,685 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 532 flow [2024-06-04 14:06:09,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:09,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:09,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:09,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:06:09,686 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:09,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1560825011, now seen corresponding path program 3 times [2024-06-04 14:06:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:09,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198086050] [2024-06-04 14:06:09,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:09,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:10,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:10,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198086050] [2024-06-04 14:06:10,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198086050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:10,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:10,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:10,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968717471] [2024-06-04 14:06:10,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:10,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:10,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:10,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:10,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:10,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:10,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:10,669 INFO L124 PetriNetUnfolderBase]: 286/507 cut-off events. [2024-06-04 14:06:10,670 INFO L125 PetriNetUnfolderBase]: For 7100/7102 co-relation queries the response was YES. [2024-06-04 14:06:10,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 507 events. 286/507 cut-off events. For 7100/7102 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1875 event pairs, 82 based on Foata normal form. 4/511 useless extension candidates. Maximal degree in co-relation 2577. Up to 390 conditions per place. [2024-06-04 14:06:10,673 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 53 selfloop transitions, 32 changer transitions 0/87 dead transitions. [2024-06-04 14:06:10,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 870 flow [2024-06-04 14:06:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 14:06:10,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:06:10,675 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 532 flow. Second operand 8 states and 93 transitions. [2024-06-04 14:06:10,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 870 flow [2024-06-04 14:06:10,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 823 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:10,681 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 618 flow [2024-06-04 14:06:10,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=618, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-06-04 14:06:10,682 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-04 14:06:10,682 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 618 flow [2024-06-04 14:06:10,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:10,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:10,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:10,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:06:10,682 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:10,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1107418139, now seen corresponding path program 2 times [2024-06-04 14:06:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8803379] [2024-06-04 14:06:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:11,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8803379] [2024-06-04 14:06:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8803379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:11,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913810438] [2024-06-04 14:06:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:11,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:11,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:11,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 618 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:11,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:11,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:11,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:11,666 INFO L124 PetriNetUnfolderBase]: 284/504 cut-off events. [2024-06-04 14:06:11,666 INFO L125 PetriNetUnfolderBase]: For 7679/7681 co-relation queries the response was YES. [2024-06-04 14:06:11,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2683 conditions, 504 events. 284/504 cut-off events. For 7679/7681 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1873 event pairs, 86 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 2642. Up to 449 conditions per place. [2024-06-04 14:06:11,671 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2024-06-04 14:06:11,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 800 flow [2024-06-04 14:06:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:11,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-04 14:06:11,674 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 618 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:11,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 800 flow [2024-06-04 14:06:11,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 763 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:11,686 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 625 flow [2024-06-04 14:06:11,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-04 14:06:11,687 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2024-06-04 14:06:11,687 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 625 flow [2024-06-04 14:06:11,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:11,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:11,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:11,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:06:11,688 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:11,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1115995777, now seen corresponding path program 4 times [2024-06-04 14:06:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186284603] [2024-06-04 14:06:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:12,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186284603] [2024-06-04 14:06:12,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186284603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:12,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:12,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:12,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758815591] [2024-06-04 14:06:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:12,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:12,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:12,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:12,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:12,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:12,639 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-04 14:06:12,639 INFO L125 PetriNetUnfolderBase]: For 8168/8168 co-relation queries the response was YES. [2024-06-04 14:06:12,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 496 events. 280/496 cut-off events. For 8168/8168 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1825 event pairs, 79 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2630. Up to 472 conditions per place. [2024-06-04 14:06:12,643 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-04 14:06:12,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 811 flow [2024-06-04 14:06:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-04 14:06:12,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-04 14:06:12,645 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 625 flow. Second operand 8 states and 82 transitions. [2024-06-04 14:06:12,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 811 flow [2024-06-04 14:06:12,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 742 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:12,653 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 585 flow [2024-06-04 14:06:12,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-04 14:06:12,654 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-04 14:06:12,654 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 585 flow [2024-06-04 14:06:12,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:12,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:06:12,655 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:12,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:12,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1107417953, now seen corresponding path program 3 times [2024-06-04 14:06:12,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:12,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261725201] [2024-06-04 14:06:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:12,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:13,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:13,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261725201] [2024-06-04 14:06:13,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261725201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:13,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:13,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:13,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413730244] [2024-06-04 14:06:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:13,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:13,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:13,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 585 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:13,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:13,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:13,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:13,660 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events. [2024-06-04 14:06:13,660 INFO L125 PetriNetUnfolderBase]: For 7772/7774 co-relation queries the response was YES. [2024-06-04 14:06:13,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 492 events. 276/492 cut-off events. For 7772/7774 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1818 event pairs, 74 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2531. Up to 408 conditions per place. [2024-06-04 14:06:13,663 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-04 14:06:13,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 771 flow [2024-06-04 14:06:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 14:06:13,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-04 14:06:13,665 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 585 flow. Second operand 7 states and 83 transitions. [2024-06-04 14:06:13,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 771 flow [2024-06-04 14:06:13,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 736 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:13,673 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 595 flow [2024-06-04 14:06:13,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-04 14:06:13,673 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-04 14:06:13,674 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 595 flow [2024-06-04 14:06:13,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:13,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:13,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:13,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:06:13,674 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:13,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1116006689, now seen corresponding path program 1 times [2024-06-04 14:06:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:13,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498282973] [2024-06-04 14:06:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498282973] [2024-06-04 14:06:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498282973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:15,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438989768] [2024-06-04 14:06:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:15,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:15,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:15,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:15,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:15,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:15,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:15,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:15,327 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-04 14:06:15,327 INFO L125 PetriNetUnfolderBase]: For 8078/8078 co-relation queries the response was YES. [2024-06-04 14:06:15,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 487 events. 274/487 cut-off events. For 8078/8078 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1802 event pairs, 77 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 2550. Up to 463 conditions per place. [2024-06-04 14:06:15,330 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-04 14:06:15,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 84 transitions, 791 flow [2024-06-04 14:06:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-04 14:06:15,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-04 14:06:15,332 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 595 flow. Second operand 8 states and 82 transitions. [2024-06-04 14:06:15,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 84 transitions, 791 flow [2024-06-04 14:06:15,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 84 transitions, 740 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:15,339 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 594 flow [2024-06-04 14:06:15,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-06-04 14:06:15,340 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2024-06-04 14:06:15,340 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 594 flow [2024-06-04 14:06:15,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:15,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:15,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:15,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:06:15,340 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:15,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1202850814, now seen corresponding path program 1 times [2024-06-04 14:06:15,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:15,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660292487] [2024-06-04 14:06:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:15,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:16,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:16,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660292487] [2024-06-04 14:06:16,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660292487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:16,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:16,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079673997] [2024-06-04 14:06:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:16,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:16,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:16,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:16,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:16,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:16,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:16,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:16,423 INFO L124 PetriNetUnfolderBase]: 283/502 cut-off events. [2024-06-04 14:06:16,423 INFO L125 PetriNetUnfolderBase]: For 8828/8828 co-relation queries the response was YES. [2024-06-04 14:06:16,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 502 events. 283/502 cut-off events. For 8828/8828 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1854 event pairs, 55 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2640. Up to 443 conditions per place. [2024-06-04 14:06:16,429 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 81 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-04 14:06:16,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 850 flow [2024-06-04 14:06:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:16,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:06:16,430 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 594 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:16,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 850 flow [2024-06-04 14:06:16,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 820 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:16,440 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 639 flow [2024-06-04 14:06:16,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=639, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-06-04 14:06:16,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-04 14:06:16,441 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 639 flow [2024-06-04 14:06:16,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:16,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:16,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:16,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:06:16,441 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:16,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1199131744, now seen corresponding path program 2 times [2024-06-04 14:06:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:16,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367494495] [2024-06-04 14:06:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:17,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:17,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367494495] [2024-06-04 14:06:17,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367494495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:17,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:17,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371857377] [2024-06-04 14:06:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:17,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:17,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:17,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:17,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:17,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:17,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:17,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:17,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:17,472 INFO L124 PetriNetUnfolderBase]: 289/512 cut-off events. [2024-06-04 14:06:17,472 INFO L125 PetriNetUnfolderBase]: For 9675/9675 co-relation queries the response was YES. [2024-06-04 14:06:17,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 512 events. 289/512 cut-off events. For 9675/9675 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1907 event pairs, 56 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2808. Up to 421 conditions per place. [2024-06-04 14:06:17,476 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-04 14:06:17,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 887 flow [2024-06-04 14:06:17,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 14:06:17,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:06:17,481 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 639 flow. Second operand 8 states and 94 transitions. [2024-06-04 14:06:17,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 887 flow [2024-06-04 14:06:17,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 854 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:17,495 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 683 flow [2024-06-04 14:06:17,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-06-04 14:06:17,496 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-04 14:06:17,496 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 683 flow [2024-06-04 14:06:17,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:17,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:17,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:17,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:06:17,497 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:17,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 687467440, now seen corresponding path program 3 times [2024-06-04 14:06:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:17,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600197071] [2024-06-04 14:06:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:17,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:18,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:18,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600197071] [2024-06-04 14:06:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600197071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:18,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:18,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91056390] [2024-06-04 14:06:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:18,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:18,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 683 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:18,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:18,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:18,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:18,549 INFO L124 PetriNetUnfolderBase]: 300/530 cut-off events. [2024-06-04 14:06:18,549 INFO L125 PetriNetUnfolderBase]: For 11074/11074 co-relation queries the response was YES. [2024-06-04 14:06:18,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 530 events. 300/530 cut-off events. For 11074/11074 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2005 event pairs, 54 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3013. Up to 410 conditions per place. [2024-06-04 14:06:18,553 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2024-06-04 14:06:18,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 1031 flow [2024-06-04 14:06:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 14:06:18,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-04 14:06:18,555 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 683 flow. Second operand 8 states and 97 transitions. [2024-06-04 14:06:18,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 1031 flow [2024-06-04 14:06:18,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 104 transitions, 970 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:18,567 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 746 flow [2024-06-04 14:06:18,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=746, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-06-04 14:06:18,567 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2024-06-04 14:06:18,568 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 746 flow [2024-06-04 14:06:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:18,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:18,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:18,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:06:18,568 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:18,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash 687467657, now seen corresponding path program 1 times [2024-06-04 14:06:18,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:18,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709260419] [2024-06-04 14:06:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:18,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:19,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:19,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709260419] [2024-06-04 14:06:19,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709260419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:19,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893371193] [2024-06-04 14:06:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:19,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:19,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:19,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:19,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:19,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:19,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:19,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:19,844 INFO L124 PetriNetUnfolderBase]: 303/535 cut-off events. [2024-06-04 14:06:19,844 INFO L125 PetriNetUnfolderBase]: For 11855/11855 co-relation queries the response was YES. [2024-06-04 14:06:19,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 535 events. 303/535 cut-off events. For 11855/11855 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2032 event pairs, 75 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 3121. Up to 471 conditions per place. [2024-06-04 14:06:19,847 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 78 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-06-04 14:06:19,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 1006 flow [2024-06-04 14:06:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 14:06:19,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:06:19,850 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 746 flow. Second operand 8 states and 90 transitions. [2024-06-04 14:06:19,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 1006 flow [2024-06-04 14:06:19,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 957 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:19,862 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 775 flow [2024-06-04 14:06:19,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=775, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-06-04 14:06:19,863 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2024-06-04 14:06:19,863 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 775 flow [2024-06-04 14:06:19,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:19,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:19,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:06:19,864 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:19,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 831567716, now seen corresponding path program 1 times [2024-06-04 14:06:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963842070] [2024-06-04 14:06:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:20,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963842070] [2024-06-04 14:06:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963842070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:20,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:20,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139545147] [2024-06-04 14:06:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:20,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:20,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:20,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:21,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:21,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:21,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:21,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:21,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:21,338 INFO L124 PetriNetUnfolderBase]: 309/546 cut-off events. [2024-06-04 14:06:21,338 INFO L125 PetriNetUnfolderBase]: For 13019/13021 co-relation queries the response was YES. [2024-06-04 14:06:21,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3270 conditions, 546 events. 309/546 cut-off events. For 13019/13021 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2085 event pairs, 78 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 3218. Up to 479 conditions per place. [2024-06-04 14:06:21,343 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 82 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-06-04 14:06:21,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1047 flow [2024-06-04 14:06:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:06:21,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-04 14:06:21,344 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 775 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:06:21,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1047 flow [2024-06-04 14:06:21,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 999 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:21,358 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 798 flow [2024-06-04 14:06:21,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=798, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2024-06-04 14:06:21,358 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-04 14:06:21,358 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 798 flow [2024-06-04 14:06:21,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:21,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:21,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:21,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:06:21,359 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:21,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1342338844, now seen corresponding path program 2 times [2024-06-04 14:06:21,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:21,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597443209] [2024-06-04 14:06:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:22,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597443209] [2024-06-04 14:06:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597443209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193013461] [2024-06-04 14:06:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:22,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:22,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:22,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:22,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:22,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:22,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:22,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:22,543 INFO L124 PetriNetUnfolderBase]: 331/581 cut-off events. [2024-06-04 14:06:22,543 INFO L125 PetriNetUnfolderBase]: For 15340/15340 co-relation queries the response was YES. [2024-06-04 14:06:22,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 581 events. 331/581 cut-off events. For 15340/15340 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2250 event pairs, 75 based on Foata normal form. 4/585 useless extension candidates. Maximal degree in co-relation 3497. Up to 534 conditions per place. [2024-06-04 14:06:22,546 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 88 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-06-04 14:06:22,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 1142 flow [2024-06-04 14:06:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 14:06:22,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31986531986531985 [2024-06-04 14:06:22,548 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 798 flow. Second operand 9 states and 95 transitions. [2024-06-04 14:06:22,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 1142 flow [2024-06-04 14:06:22,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 1087 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:22,563 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 838 flow [2024-06-04 14:06:22,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-06-04 14:06:22,564 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2024-06-04 14:06:22,564 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 838 flow [2024-06-04 14:06:22,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:22,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:22,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:22,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:06:22,565 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:22,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash -29573600, now seen corresponding path program 4 times [2024-06-04 14:06:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815662990] [2024-06-04 14:06:22,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:23,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815662990] [2024-06-04 14:06:23,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815662990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:23,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:23,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:23,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927529678] [2024-06-04 14:06:23,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:23,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:23,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:23,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:23,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:23,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:23,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:23,571 INFO L124 PetriNetUnfolderBase]: 337/593 cut-off events. [2024-06-04 14:06:23,571 INFO L125 PetriNetUnfolderBase]: For 15915/15917 co-relation queries the response was YES. [2024-06-04 14:06:23,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 593 events. 337/593 cut-off events. For 15915/15917 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2310 event pairs, 73 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3636. Up to 496 conditions per place. [2024-06-04 14:06:23,575 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 82 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-04 14:06:23,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 110 transitions, 1118 flow [2024-06-04 14:06:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:23,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:06:23,576 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 838 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:23,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 110 transitions, 1118 flow [2024-06-04 14:06:23,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 110 transitions, 1078 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:23,593 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 887 flow [2024-06-04 14:06:23,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=887, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-06-04 14:06:23,595 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-06-04 14:06:23,595 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 887 flow [2024-06-04 14:06:23,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:23,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:23,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:23,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:06:23,596 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:23,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1140942124, now seen corresponding path program 5 times [2024-06-04 14:06:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:23,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226831405] [2024-06-04 14:06:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226831405] [2024-06-04 14:06:24,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226831405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:24,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:24,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:24,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188260266] [2024-06-04 14:06:24,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:24,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:24,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:24,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 887 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:24,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:24,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:24,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:24,585 INFO L124 PetriNetUnfolderBase]: 343/603 cut-off events. [2024-06-04 14:06:24,585 INFO L125 PetriNetUnfolderBase]: For 17273/17275 co-relation queries the response was YES. [2024-06-04 14:06:24,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 603 events. 343/603 cut-off events. For 17273/17275 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2369 event pairs, 67 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 3784. Up to 438 conditions per place. [2024-06-04 14:06:24,589 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 73 selfloop transitions, 42 changer transitions 0/117 dead transitions. [2024-06-04 14:06:24,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 1285 flow [2024-06-04 14:06:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 14:06:24,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:06:24,590 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 887 flow. Second operand 8 states and 96 transitions. [2024-06-04 14:06:24,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 1285 flow [2024-06-04 14:06:24,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1212 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:24,606 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 971 flow [2024-06-04 14:06:24,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-04 14:06:24,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-04 14:06:24,606 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 971 flow [2024-06-04 14:06:24,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:24,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:24,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:24,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:06:24,607 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:24,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash 236131616, now seen corresponding path program 3 times [2024-06-04 14:06:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:24,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107394977] [2024-06-04 14:06:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:24,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:25,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107394977] [2024-06-04 14:06:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107394977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:25,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795565864] [2024-06-04 14:06:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:25,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:25,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:25,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:25,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:25,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:25,944 INFO L124 PetriNetUnfolderBase]: 359/627 cut-off events. [2024-06-04 14:06:25,944 INFO L125 PetriNetUnfolderBase]: For 19344/19344 co-relation queries the response was YES. [2024-06-04 14:06:25,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4107 conditions, 627 events. 359/627 cut-off events. For 19344/19344 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2484 event pairs, 75 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4050. Up to 555 conditions per place. [2024-06-04 14:06:25,949 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 94 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-04 14:06:25,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 1353 flow [2024-06-04 14:06:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:06:25,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-04 14:06:25,950 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 971 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:06:25,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 1353 flow [2024-06-04 14:06:25,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 1291 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:25,971 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 1027 flow [2024-06-04 14:06:25,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1027, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-06-04 14:06:25,972 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 89 predicate places. [2024-06-04 14:06:25,972 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 1027 flow [2024-06-04 14:06:25,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:25,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:25,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:06:25,973 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:25,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1140934188, now seen corresponding path program 4 times [2024-06-04 14:06:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:25,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062346034] [2024-06-04 14:06:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:27,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062346034] [2024-06-04 14:06:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062346034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:27,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709280159] [2024-06-04 14:06:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:27,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:27,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:27,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:27,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 1027 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:27,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:27,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:27,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:27,685 INFO L124 PetriNetUnfolderBase]: 365/639 cut-off events. [2024-06-04 14:06:27,685 INFO L125 PetriNetUnfolderBase]: For 20646/20648 co-relation queries the response was YES. [2024-06-04 14:06:27,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 639 events. 365/639 cut-off events. For 20646/20648 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2573 event pairs, 81 based on Foata normal form. 4/643 useless extension candidates. Maximal degree in co-relation 4219. Up to 425 conditions per place. [2024-06-04 14:06:27,689 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 78 selfloop transitions, 45 changer transitions 0/125 dead transitions. [2024-06-04 14:06:27,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 1447 flow [2024-06-04 14:06:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:06:27,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:06:27,691 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 1027 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:06:27,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 1447 flow [2024-06-04 14:06:27,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 1402 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:27,711 INFO L231 Difference]: Finished difference. Result has 126 places, 110 transitions, 1170 flow [2024-06-04 14:06:27,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=126, PETRI_TRANSITIONS=110} [2024-06-04 14:06:27,712 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-04 14:06:27,712 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 110 transitions, 1170 flow [2024-06-04 14:06:27,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:27,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:27,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:27,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:06:27,713 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:27,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1397644227, now seen corresponding path program 2 times [2024-06-04 14:06:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:27,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988926623] [2024-06-04 14:06:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:27,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:28,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988926623] [2024-06-04 14:06:28,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988926623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:28,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:28,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583726446] [2024-06-04 14:06:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:28,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:28,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:28,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 110 transitions, 1170 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:28,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:28,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:28,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:28,910 INFO L124 PetriNetUnfolderBase]: 363/636 cut-off events. [2024-06-04 14:06:28,910 INFO L125 PetriNetUnfolderBase]: For 21167/21169 co-relation queries the response was YES. [2024-06-04 14:06:28,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 636 events. 363/636 cut-off events. For 21167/21169 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2551 event pairs, 91 based on Foata normal form. 3/639 useless extension candidates. Maximal degree in co-relation 4392. Up to 570 conditions per place. [2024-06-04 14:06:28,915 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 96 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-06-04 14:06:28,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 120 transitions, 1436 flow [2024-06-04 14:06:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:06:28,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:06:28,916 INFO L175 Difference]: Start difference. First operand has 126 places, 110 transitions, 1170 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:06:28,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 120 transitions, 1436 flow [2024-06-04 14:06:28,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 120 transitions, 1373 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:28,942 INFO L231 Difference]: Finished difference. Result has 129 places, 110 transitions, 1159 flow [2024-06-04 14:06:28,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=129, PETRI_TRANSITIONS=110} [2024-06-04 14:06:28,943 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-04 14:06:28,943 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 110 transitions, 1159 flow [2024-06-04 14:06:28,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:28,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:28,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:28,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:06:28,943 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:28,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:28,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1397644444, now seen corresponding path program 6 times [2024-06-04 14:06:28,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:28,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130624015] [2024-06-04 14:06:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:28,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:29,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:29,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130624015] [2024-06-04 14:06:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130624015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:29,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876180578] [2024-06-04 14:06:29,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:29,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:29,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:29,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 110 transitions, 1159 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:29,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:29,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:29,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:30,008 INFO L124 PetriNetUnfolderBase]: 369/646 cut-off events. [2024-06-04 14:06:30,009 INFO L125 PetriNetUnfolderBase]: For 22767/22769 co-relation queries the response was YES. [2024-06-04 14:06:30,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 646 events. 369/646 cut-off events. For 22767/22769 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2604 event pairs, 79 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 4482. Up to 529 conditions per place. [2024-06-04 14:06:30,014 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 94 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-06-04 14:06:30,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 1553 flow [2024-06-04 14:06:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 14:06:30,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-04 14:06:30,015 INFO L175 Difference]: Start difference. First operand has 129 places, 110 transitions, 1159 flow. Second operand 8 states and 97 transitions. [2024-06-04 14:06:30,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 1553 flow [2024-06-04 14:06:30,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1481 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:30,045 INFO L231 Difference]: Finished difference. Result has 130 places, 112 transitions, 1191 flow [2024-06-04 14:06:30,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1191, PETRI_PLACES=130, PETRI_TRANSITIONS=112} [2024-06-04 14:06:30,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-04 14:06:30,045 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 112 transitions, 1191 flow [2024-06-04 14:06:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:30,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:30,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:06:30,046 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:30,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1883571684, now seen corresponding path program 7 times [2024-06-04 14:06:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728099022] [2024-06-04 14:06:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728099022] [2024-06-04 14:06:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728099022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:30,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:30,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53114823] [2024-06-04 14:06:30,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:30,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:30,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:30,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:30,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 112 transitions, 1191 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:30,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:30,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:30,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:31,311 INFO L124 PetriNetUnfolderBase]: 365/640 cut-off events. [2024-06-04 14:06:31,311 INFO L125 PetriNetUnfolderBase]: For 22967/22969 co-relation queries the response was YES. [2024-06-04 14:06:31,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4511 conditions, 640 events. 365/640 cut-off events. For 22967/22969 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2584 event pairs, 81 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4445. Up to 547 conditions per place. [2024-06-04 14:06:31,317 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 98 selfloop transitions, 24 changer transitions 0/124 dead transitions. [2024-06-04 14:06:31,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 1469 flow [2024-06-04 14:06:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:06:31,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:06:31,329 INFO L175 Difference]: Start difference. First operand has 130 places, 112 transitions, 1191 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:06:31,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 1469 flow [2024-06-04 14:06:31,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 124 transitions, 1327 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:31,358 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 1102 flow [2024-06-04 14:06:31,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1102, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-06-04 14:06:31,359 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2024-06-04 14:06:31,359 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 1102 flow [2024-06-04 14:06:31,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:31,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:31,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:31,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:06:31,360 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:31,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1883787010, now seen corresponding path program 5 times [2024-06-04 14:06:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632828591] [2024-06-04 14:06:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:32,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:32,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632828591] [2024-06-04 14:06:32,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632828591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:32,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:32,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:32,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161848247] [2024-06-04 14:06:32,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:32,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:32,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:32,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:32,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:32,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:32,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:32,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:32,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:32,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:32,840 INFO L124 PetriNetUnfolderBase]: 366/642 cut-off events. [2024-06-04 14:06:32,840 INFO L125 PetriNetUnfolderBase]: For 23440/23442 co-relation queries the response was YES. [2024-06-04 14:06:32,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 642 events. 366/642 cut-off events. For 23440/23442 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2585 event pairs, 92 based on Foata normal form. 4/646 useless extension candidates. Maximal degree in co-relation 4328. Up to 574 conditions per place. [2024-06-04 14:06:32,844 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 103 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2024-06-04 14:06:32,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 126 transitions, 1421 flow [2024-06-04 14:06:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:06:32,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:06:32,845 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 1102 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:06:32,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 126 transitions, 1421 flow [2024-06-04 14:06:32,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 126 transitions, 1365 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:32,875 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 1130 flow [2024-06-04 14:06:32,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2024-06-04 14:06:32,875 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-04 14:06:32,875 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 1130 flow [2024-06-04 14:06:32,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:32,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:32,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:32,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:06:32,876 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:32,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:32,876 INFO L85 PathProgramCache]: Analyzing trace with hash 236469950, now seen corresponding path program 1 times [2024-06-04 14:06:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:32,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636592123] [2024-06-04 14:06:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:32,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:34,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:34,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636592123] [2024-06-04 14:06:34,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636592123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:34,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:34,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:34,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445443384] [2024-06-04 14:06:34,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:34,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:34,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:34,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:34,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:34,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:34,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 1130 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:34,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:34,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:34,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:34,603 INFO L124 PetriNetUnfolderBase]: 363/635 cut-off events. [2024-06-04 14:06:34,603 INFO L125 PetriNetUnfolderBase]: For 23496/23496 co-relation queries the response was YES. [2024-06-04 14:06:34,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4348 conditions, 635 events. 363/635 cut-off events. For 23496/23496 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2532 event pairs, 87 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4281. Up to 605 conditions per place. [2024-06-04 14:06:34,607 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 108 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-04 14:06:34,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 1396 flow [2024-06-04 14:06:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-04 14:06:34,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2996632996632997 [2024-06-04 14:06:34,609 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 1130 flow. Second operand 9 states and 89 transitions. [2024-06-04 14:06:34,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 1396 flow [2024-06-04 14:06:34,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 124 transitions, 1331 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:34,634 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1097 flow [2024-06-04 14:06:34,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-04 14:06:34,635 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-04 14:06:34,635 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1097 flow [2024-06-04 14:06:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:34,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:34,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:34,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:06:34,636 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:34,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:34,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1363469376, now seen corresponding path program 1 times [2024-06-04 14:06:34,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:34,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551114967] [2024-06-04 14:06:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:35,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551114967] [2024-06-04 14:06:35,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551114967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:35,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:35,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:35,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230828692] [2024-06-04 14:06:35,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:35,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:35,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:35,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:35,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:35,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:35,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:35,910 INFO L124 PetriNetUnfolderBase]: 374/656 cut-off events. [2024-06-04 14:06:35,911 INFO L125 PetriNetUnfolderBase]: For 26057/26057 co-relation queries the response was YES. [2024-06-04 14:06:35,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 656 events. 374/656 cut-off events. For 26057/26057 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2688 event pairs, 49 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 4425. Up to 565 conditions per place. [2024-06-04 14:06:35,915 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 117 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2024-06-04 14:06:35,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1501 flow [2024-06-04 14:06:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:06:35,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:06:35,916 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1097 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:06:35,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1501 flow [2024-06-04 14:06:35,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 1463 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:35,948 INFO L231 Difference]: Finished difference. Result has 137 places, 116 transitions, 1117 flow [2024-06-04 14:06:35,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=137, PETRI_TRANSITIONS=116} [2024-06-04 14:06:35,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-04 14:06:35,948 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 116 transitions, 1117 flow [2024-06-04 14:06:35,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:35,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:35,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:06:35,949 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:35,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:35,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1063705588, now seen corresponding path program 2 times [2024-06-04 14:06:35,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:35,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868414474] [2024-06-04 14:06:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:36,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868414474] [2024-06-04 14:06:36,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868414474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:36,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:36,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:36,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941242818] [2024-06-04 14:06:36,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:36,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:36,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:36,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 116 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:36,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:36,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:36,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:37,304 INFO L124 PetriNetUnfolderBase]: 371/651 cut-off events. [2024-06-04 14:06:37,304 INFO L125 PetriNetUnfolderBase]: For 26026/26026 co-relation queries the response was YES. [2024-06-04 14:06:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4446 conditions, 651 events. 371/651 cut-off events. For 26026/26026 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2648 event pairs, 68 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4377. Up to 589 conditions per place. [2024-06-04 14:06:37,308 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 116 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2024-06-04 14:06:37,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 1417 flow [2024-06-04 14:06:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 14:06:37,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:06:37,313 INFO L175 Difference]: Start difference. First operand has 137 places, 116 transitions, 1117 flow. Second operand 8 states and 90 transitions. [2024-06-04 14:06:37,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 1417 flow [2024-06-04 14:06:37,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 132 transitions, 1384 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:37,371 INFO L231 Difference]: Finished difference. Result has 140 places, 116 transitions, 1117 flow [2024-06-04 14:06:37,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=140, PETRI_TRANSITIONS=116} [2024-06-04 14:06:37,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-04 14:06:37,373 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 116 transitions, 1117 flow [2024-06-04 14:06:37,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:37,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:37,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:37,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:06:37,374 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:37,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash -278813960, now seen corresponding path program 1 times [2024-06-04 14:06:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:37,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577880941] [2024-06-04 14:06:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:37,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577880941] [2024-06-04 14:06:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577880941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:38,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:38,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542577396] [2024-06-04 14:06:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:38,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:38,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:38,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:38,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 116 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:38,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:38,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:38,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:38,562 INFO L124 PetriNetUnfolderBase]: 369/648 cut-off events. [2024-06-04 14:06:38,562 INFO L125 PetriNetUnfolderBase]: For 26044/26044 co-relation queries the response was YES. [2024-06-04 14:06:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 648 events. 369/648 cut-off events. For 26044/26044 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2636 event pairs, 68 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 4355. Up to 583 conditions per place. [2024-06-04 14:06:38,565 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 113 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-06-04 14:06:38,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1419 flow [2024-06-04 14:06:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:38,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:06:38,566 INFO L175 Difference]: Start difference. First operand has 140 places, 116 transitions, 1117 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:38,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1419 flow [2024-06-04 14:06:38,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 1383 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:38,597 INFO L231 Difference]: Finished difference. Result has 141 places, 116 transitions, 1123 flow [2024-06-04 14:06:38,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1123, PETRI_PLACES=141, PETRI_TRANSITIONS=116} [2024-06-04 14:06:38,597 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-04 14:06:38,597 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 1123 flow [2024-06-04 14:06:38,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:38,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:38,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:06:38,598 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:38,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1063585308, now seen corresponding path program 1 times [2024-06-04 14:06:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:38,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263428464] [2024-06-04 14:06:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:38,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:39,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:39,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263428464] [2024-06-04 14:06:39,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263428464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:39,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:39,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:39,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093848466] [2024-06-04 14:06:39,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:39,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:39,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:39,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:39,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:39,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:39,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 116 transitions, 1123 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:39,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:39,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:39,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:40,168 INFO L124 PetriNetUnfolderBase]: 375/658 cut-off events. [2024-06-04 14:06:40,168 INFO L125 PetriNetUnfolderBase]: For 27877/27877 co-relation queries the response was YES. [2024-06-04 14:06:40,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 658 events. 375/658 cut-off events. For 27877/27877 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2687 event pairs, 66 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4447. Up to 591 conditions per place. [2024-06-04 14:06:40,173 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 118 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2024-06-04 14:06:40,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 136 transitions, 1465 flow [2024-06-04 14:06:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:06:40,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:06:40,175 INFO L175 Difference]: Start difference. First operand has 141 places, 116 transitions, 1123 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:06:40,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 136 transitions, 1465 flow [2024-06-04 14:06:40,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 136 transitions, 1414 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:40,220 INFO L231 Difference]: Finished difference. Result has 143 places, 118 transitions, 1139 flow [2024-06-04 14:06:40,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=143, PETRI_TRANSITIONS=118} [2024-06-04 14:06:40,221 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-04 14:06:40,221 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 118 transitions, 1139 flow [2024-06-04 14:06:40,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:40,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:40,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:40,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:06:40,222 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:40,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1481802204, now seen corresponding path program 1 times [2024-06-04 14:06:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591238318] [2024-06-04 14:06:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:41,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591238318] [2024-06-04 14:06:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591238318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:41,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:41,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:41,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419324074] [2024-06-04 14:06:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:41,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:41,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 118 transitions, 1139 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:41,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:41,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:41,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:42,101 INFO L124 PetriNetUnfolderBase]: 416/729 cut-off events. [2024-06-04 14:06:42,101 INFO L125 PetriNetUnfolderBase]: For 29014/29014 co-relation queries the response was YES. [2024-06-04 14:06:42,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4969 conditions, 729 events. 416/729 cut-off events. For 29014/29014 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3067 event pairs, 90 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 4896. Up to 637 conditions per place. [2024-06-04 14:06:42,106 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 120 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-04 14:06:42,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 154 transitions, 1736 flow [2024-06-04 14:06:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:06:42,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:06:42,107 INFO L175 Difference]: Start difference. First operand has 143 places, 118 transitions, 1139 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:06:42,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 154 transitions, 1736 flow [2024-06-04 14:06:42,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 154 transitions, 1675 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:42,148 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1447 flow [2024-06-04 14:06:42,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1447, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-06-04 14:06:42,148 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-04 14:06:42,148 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1447 flow [2024-06-04 14:06:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:42,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:42,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:42,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:06:42,151 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:42,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1356258350, now seen corresponding path program 3 times [2024-06-04 14:06:42,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:42,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239903009] [2024-06-04 14:06:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:42,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239903009] [2024-06-04 14:06:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239903009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:42,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498257776] [2024-06-04 14:06:42,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:42,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:42,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:42,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:42,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1447 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:42,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:42,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:42,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:43,283 INFO L124 PetriNetUnfolderBase]: 403/712 cut-off events. [2024-06-04 14:06:43,284 INFO L125 PetriNetUnfolderBase]: For 29861/29870 co-relation queries the response was YES. [2024-06-04 14:06:43,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4958 conditions, 712 events. 403/712 cut-off events. For 29861/29870 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3025 event pairs, 77 based on Foata normal form. 10/720 useless extension candidates. Maximal degree in co-relation 4879. Up to 595 conditions per place. [2024-06-04 14:06:43,288 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 111 selfloop transitions, 28 changer transitions 0/149 dead transitions. [2024-06-04 14:06:43,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 149 transitions, 1753 flow [2024-06-04 14:06:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-04 14:06:43,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-04 14:06:43,289 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1447 flow. Second operand 7 states and 86 transitions. [2024-06-04 14:06:43,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 149 transitions, 1753 flow [2024-06-04 14:06:43,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 1705 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:43,337 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 1460 flow [2024-06-04 14:06:43,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1460, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2024-06-04 14:06:43,337 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-04 14:06:43,337 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 1460 flow [2024-06-04 14:06:43,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:43,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:43,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:43,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:06:43,338 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:43,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1544092728, now seen corresponding path program 2 times [2024-06-04 14:06:43,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:43,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869896348] [2024-06-04 14:06:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:43,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:44,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:44,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869896348] [2024-06-04 14:06:44,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869896348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:44,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:44,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:44,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148229219] [2024-06-04 14:06:44,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:44,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:44,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:44,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:44,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:44,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 1460 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:44,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:44,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:44,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:44,635 INFO L124 PetriNetUnfolderBase]: 463/808 cut-off events. [2024-06-04 14:06:44,635 INFO L125 PetriNetUnfolderBase]: For 32065/32065 co-relation queries the response was YES. [2024-06-04 14:06:44,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 808 events. 463/808 cut-off events. For 32065/32065 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3531 event pairs, 66 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 5376. Up to 639 conditions per place. [2024-06-04 14:06:44,640 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 47 changer transitions 0/181 dead transitions. [2024-06-04 14:06:44,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 181 transitions, 2072 flow [2024-06-04 14:06:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:06:44,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-04 14:06:44,641 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 1460 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:06:44,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 181 transitions, 2072 flow [2024-06-04 14:06:44,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 181 transitions, 1957 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:44,693 INFO L231 Difference]: Finished difference. Result has 163 places, 159 transitions, 1691 flow [2024-06-04 14:06:44,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=163, PETRI_TRANSITIONS=159} [2024-06-04 14:06:44,693 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-04 14:06:44,693 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 159 transitions, 1691 flow [2024-06-04 14:06:44,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:44,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:44,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:44,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:06:44,694 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:44,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1246212750, now seen corresponding path program 3 times [2024-06-04 14:06:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:44,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392859171] [2024-06-04 14:06:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:44,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:45,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392859171] [2024-06-04 14:06:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392859171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:45,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:45,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534961595] [2024-06-04 14:06:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:45,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:45,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:45,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 159 transitions, 1691 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:45,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:45,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:45,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:45,922 INFO L124 PetriNetUnfolderBase]: 469/818 cut-off events. [2024-06-04 14:06:45,922 INFO L125 PetriNetUnfolderBase]: For 33787/33787 co-relation queries the response was YES. [2024-06-04 14:06:45,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5665 conditions, 818 events. 469/818 cut-off events. For 33787/33787 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3569 event pairs, 72 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 5580. Up to 677 conditions per place. [2024-06-04 14:06:45,928 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-04 14:06:45,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 181 transitions, 2149 flow [2024-06-04 14:06:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:06:45,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:06:45,930 INFO L175 Difference]: Start difference. First operand has 163 places, 159 transitions, 1691 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:06:45,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 181 transitions, 2149 flow [2024-06-04 14:06:45,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 181 transitions, 2016 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:45,984 INFO L231 Difference]: Finished difference. Result has 166 places, 161 transitions, 1677 flow [2024-06-04 14:06:45,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=166, PETRI_TRANSITIONS=161} [2024-06-04 14:06:45,984 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-04 14:06:45,984 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 161 transitions, 1677 flow [2024-06-04 14:06:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:45,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:45,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:06:45,985 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:45,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1246033012, now seen corresponding path program 2 times [2024-06-04 14:06:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:45,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149905606] [2024-06-04 14:06:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:45,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149905606] [2024-06-04 14:06:47,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149905606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:47,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:47,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:47,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663781558] [2024-06-04 14:06:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:47,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:47,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 161 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:47,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:47,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:47,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:47,845 INFO L124 PetriNetUnfolderBase]: 482/839 cut-off events. [2024-06-04 14:06:47,845 INFO L125 PetriNetUnfolderBase]: For 36342/36342 co-relation queries the response was YES. [2024-06-04 14:06:47,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 839 events. 482/839 cut-off events. For 36342/36342 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3691 event pairs, 88 based on Foata normal form. 1/840 useless extension candidates. Maximal degree in co-relation 5719. Up to 734 conditions per place. [2024-06-04 14:06:47,850 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 146 selfloop transitions, 35 changer transitions 0/183 dead transitions. [2024-06-04 14:06:47,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 183 transitions, 2266 flow [2024-06-04 14:06:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:06:47,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:06:47,852 INFO L175 Difference]: Start difference. First operand has 166 places, 161 transitions, 1677 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:06:47,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 183 transitions, 2266 flow [2024-06-04 14:06:47,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 2170 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:47,916 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1752 flow [2024-06-04 14:06:47,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-06-04 14:06:47,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-04 14:06:47,916 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1752 flow [2024-06-04 14:06:47,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:47,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:47,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:47,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:06:47,917 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:47,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash 21423918, now seen corresponding path program 4 times [2024-06-04 14:06:47,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:47,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486236885] [2024-06-04 14:06:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:47,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486236885] [2024-06-04 14:06:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486236885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631829248] [2024-06-04 14:06:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:48,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:48,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:48,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:48,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1752 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:48,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:48,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:48,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:49,307 INFO L124 PetriNetUnfolderBase]: 499/867 cut-off events. [2024-06-04 14:06:49,307 INFO L125 PetriNetUnfolderBase]: For 40057/40057 co-relation queries the response was YES. [2024-06-04 14:06:49,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 867 events. 499/867 cut-off events. For 40057/40057 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3856 event pairs, 65 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 5972. Up to 659 conditions per place. [2024-06-04 14:06:49,312 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 57 changer transitions 0/195 dead transitions. [2024-06-04 14:06:49,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 195 transitions, 2392 flow [2024-06-04 14:06:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:06:49,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:06:49,313 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1752 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:06:49,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 195 transitions, 2392 flow [2024-06-04 14:06:49,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 195 transitions, 2305 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:49,374 INFO L231 Difference]: Finished difference. Result has 177 places, 171 transitions, 1891 flow [2024-06-04 14:06:49,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=177, PETRI_TRANSITIONS=171} [2024-06-04 14:06:49,374 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2024-06-04 14:06:49,374 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 171 transitions, 1891 flow [2024-06-04 14:06:49,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:49,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:49,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:49,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:06:49,374 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:49,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash -241606324, now seen corresponding path program 1 times [2024-06-04 14:06:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5422210] [2024-06-04 14:06:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:51,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:51,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5422210] [2024-06-04 14:06:51,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5422210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:51,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:51,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:51,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693295193] [2024-06-04 14:06:51,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:51,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:51,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:51,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:51,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 171 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:51,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:51,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:51,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:51,675 INFO L124 PetriNetUnfolderBase]: 500/870 cut-off events. [2024-06-04 14:06:51,675 INFO L125 PetriNetUnfolderBase]: For 41304/41304 co-relation queries the response was YES. [2024-06-04 14:06:51,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 870 events. 500/870 cut-off events. For 41304/41304 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3893 event pairs, 100 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 6119. Up to 778 conditions per place. [2024-06-04 14:06:51,681 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 158 selfloop transitions, 33 changer transitions 0/193 dead transitions. [2024-06-04 14:06:51,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 193 transitions, 2387 flow [2024-06-04 14:06:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:06:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:06:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:06:51,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:06:51,682 INFO L175 Difference]: Start difference. First operand has 177 places, 171 transitions, 1891 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:06:51,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 193 transitions, 2387 flow [2024-06-04 14:06:51,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 193 transitions, 2294 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:51,756 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1942 flow [2024-06-04 14:06:51,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-06-04 14:06:51,757 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-04 14:06:51,757 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1942 flow [2024-06-04 14:06:51,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:51,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:51,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:51,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:06:51,757 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:51,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1533988120, now seen corresponding path program 5 times [2024-06-04 14:06:51,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:51,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776425256] [2024-06-04 14:06:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:51,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:52,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776425256] [2024-06-04 14:06:52,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776425256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:52,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:52,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:52,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934596685] [2024-06-04 14:06:52,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:52,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:52,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:52,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:52,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:52,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:52,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1942 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:52,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:52,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:52,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:53,290 INFO L124 PetriNetUnfolderBase]: 506/881 cut-off events. [2024-06-04 14:06:53,290 INFO L125 PetriNetUnfolderBase]: For 41777/41777 co-relation queries the response was YES. [2024-06-04 14:06:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 881 events. 506/881 cut-off events. For 41777/41777 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3934 event pairs, 71 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6250. Up to 722 conditions per place. [2024-06-04 14:06:53,296 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 146 selfloop transitions, 44 changer transitions 0/192 dead transitions. [2024-06-04 14:06:53,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 192 transitions, 2402 flow [2024-06-04 14:06:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:06:53,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:06:53,298 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1942 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:06:53,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 192 transitions, 2402 flow [2024-06-04 14:06:53,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 2345 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:53,372 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 2025 flow [2024-06-04 14:06:53,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2025, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-04 14:06:53,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 157 predicate places. [2024-06-04 14:06:53,373 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 2025 flow [2024-06-04 14:06:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:53,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:53,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:06:53,373 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:53,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash -821915364, now seen corresponding path program 6 times [2024-06-04 14:06:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:53,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005930882] [2024-06-04 14:06:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:54,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:54,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005930882] [2024-06-04 14:06:54,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005930882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:54,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:54,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:54,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811738263] [2024-06-04 14:06:54,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:54,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:54,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:54,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:54,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:54,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 2025 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:54,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:54,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:54,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:54,861 INFO L124 PetriNetUnfolderBase]: 522/907 cut-off events. [2024-06-04 14:06:54,861 INFO L125 PetriNetUnfolderBase]: For 46443/46443 co-relation queries the response was YES. [2024-06-04 14:06:54,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 907 events. 522/907 cut-off events. For 46443/46443 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4073 event pairs, 59 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 6660. Up to 613 conditions per place. [2024-06-04 14:06:54,867 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 118 selfloop transitions, 80 changer transitions 0/200 dead transitions. [2024-06-04 14:06:54,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 2663 flow [2024-06-04 14:06:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:06:54,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:06:54,868 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 2025 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:06:54,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 2663 flow [2024-06-04 14:06:54,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 200 transitions, 2553 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:54,947 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 2177 flow [2024-06-04 14:06:54,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2177, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2024-06-04 14:06:54,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-04 14:06:54,948 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 2177 flow [2024-06-04 14:06:54,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:54,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:54,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:06:54,948 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:54,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash -821921874, now seen corresponding path program 7 times [2024-06-04 14:06:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766555899] [2024-06-04 14:06:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766555899] [2024-06-04 14:06:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766555899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:56,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:56,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:56,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953840783] [2024-06-04 14:06:56,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:56,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:56,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:56,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:56,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 2177 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:56,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:56,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:56,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:56,562 INFO L124 PetriNetUnfolderBase]: 523/909 cut-off events. [2024-06-04 14:06:56,562 INFO L125 PetriNetUnfolderBase]: For 47743/47743 co-relation queries the response was YES. [2024-06-04 14:06:56,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6888 conditions, 909 events. 523/909 cut-off events. For 47743/47743 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4091 event pairs, 77 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 6797. Up to 738 conditions per place. [2024-06-04 14:06:56,568 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 153 selfloop transitions, 49 changer transitions 0/204 dead transitions. [2024-06-04 14:06:56,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 204 transitions, 2710 flow [2024-06-04 14:06:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:06:56,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-04 14:06:56,569 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 2177 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:06:56,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 204 transitions, 2710 flow [2024-06-04 14:06:56,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 204 transitions, 2585 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:56,650 INFO L231 Difference]: Finished difference. Result has 195 places, 185 transitions, 2219 flow [2024-06-04 14:06:56,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2219, PETRI_PLACES=195, PETRI_TRANSITIONS=185} [2024-06-04 14:06:56,651 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-04 14:06:56,651 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 185 transitions, 2219 flow [2024-06-04 14:06:56,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:56,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:56,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:56,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:06:56,651 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:56,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash -649780552, now seen corresponding path program 2 times [2024-06-04 14:06:56,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:56,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845618899] [2024-06-04 14:06:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:56,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:58,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845618899] [2024-06-04 14:06:58,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845618899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:58,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:58,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:58,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654531819] [2024-06-04 14:06:58,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:58,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:58,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:58,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:58,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:58,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:58,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 185 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:58,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:58,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:58,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:58,936 INFO L124 PetriNetUnfolderBase]: 529/917 cut-off events. [2024-06-04 14:06:58,936 INFO L125 PetriNetUnfolderBase]: For 48245/48245 co-relation queries the response was YES. [2024-06-04 14:06:58,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6948 conditions, 917 events. 529/917 cut-off events. For 48245/48245 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4159 event pairs, 98 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 6856. Up to 796 conditions per place. [2024-06-04 14:06:58,943 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 159 selfloop transitions, 41 changer transitions 0/202 dead transitions. [2024-06-04 14:06:58,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 2709 flow [2024-06-04 14:06:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:06:58,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:06:58,944 INFO L175 Difference]: Start difference. First operand has 195 places, 185 transitions, 2219 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:06:58,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 2709 flow [2024-06-04 14:06:59,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 202 transitions, 2570 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:59,051 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 2214 flow [2024-06-04 14:06:59,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2214, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2024-06-04 14:06:59,052 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 166 predicate places. [2024-06-04 14:06:59,052 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 2214 flow [2024-06-04 14:06:59,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:59,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:59,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:59,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:06:59,053 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:59,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:59,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1632626636, now seen corresponding path program 8 times [2024-06-04 14:06:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:59,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932717423] [2024-06-04 14:06:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:59,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932717423] [2024-06-04 14:06:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932717423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643599650] [2024-06-04 14:06:59,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:59,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:59,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 2214 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:59,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:59,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:59,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:00,350 INFO L124 PetriNetUnfolderBase]: 545/947 cut-off events. [2024-06-04 14:07:00,350 INFO L125 PetriNetUnfolderBase]: For 51787/51787 co-relation queries the response was YES. [2024-06-04 14:07:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7200 conditions, 947 events. 545/947 cut-off events. For 51787/51787 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4301 event pairs, 62 based on Foata normal form. 2/949 useless extension candidates. Maximal degree in co-relation 7109. Up to 677 conditions per place. [2024-06-04 14:07:00,357 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 135 selfloop transitions, 72 changer transitions 0/209 dead transitions. [2024-06-04 14:07:00,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 209 transitions, 2878 flow [2024-06-04 14:07:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 14:07:00,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-04 14:07:00,358 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 2214 flow. Second operand 9 states and 109 transitions. [2024-06-04 14:07:00,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 209 transitions, 2878 flow [2024-06-04 14:07:00,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 209 transitions, 2776 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:00,441 INFO L231 Difference]: Finished difference. Result has 199 places, 191 transitions, 2353 flow [2024-06-04 14:07:00,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2353, PETRI_PLACES=199, PETRI_TRANSITIONS=191} [2024-06-04 14:07:00,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-04 14:07:00,442 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 191 transitions, 2353 flow [2024-06-04 14:07:00,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:00,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:00,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:07:00,442 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:00,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash -923209824, now seen corresponding path program 9 times [2024-06-04 14:07:00,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:00,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616102029] [2024-06-04 14:07:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616102029] [2024-06-04 14:07:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616102029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083411627] [2024-06-04 14:07:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:01,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:01,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 191 transitions, 2353 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:01,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:01,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:01,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:01,690 INFO L124 PetriNetUnfolderBase]: 551/955 cut-off events. [2024-06-04 14:07:01,690 INFO L125 PetriNetUnfolderBase]: For 54288/54288 co-relation queries the response was YES. [2024-06-04 14:07:01,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 955 events. 551/955 cut-off events. For 54288/54288 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4360 event pairs, 90 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 7332. Up to 812 conditions per place. [2024-06-04 14:07:01,697 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 165 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-06-04 14:07:01,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 206 transitions, 2847 flow [2024-06-04 14:07:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:07:01,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-04 14:07:01,698 INFO L175 Difference]: Start difference. First operand has 199 places, 191 transitions, 2353 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:07:01,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 206 transitions, 2847 flow [2024-06-04 14:07:01,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 206 transitions, 2712 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-04 14:07:01,815 INFO L231 Difference]: Finished difference. Result has 203 places, 193 transitions, 2353 flow [2024-06-04 14:07:01,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2353, PETRI_PLACES=203, PETRI_TRANSITIONS=193} [2024-06-04 14:07:01,816 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-04 14:07:01,816 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 193 transitions, 2353 flow [2024-06-04 14:07:01,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:01,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:01,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:01,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:07:01,816 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:01,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -923030334, now seen corresponding path program 10 times [2024-06-04 14:07:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:01,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495700426] [2024-06-04 14:07:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:02,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495700426] [2024-06-04 14:07:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495700426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:02,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:02,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039598469] [2024-06-04 14:07:02,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:02,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:02,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 193 transitions, 2353 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:02,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:02,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:02,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:03,296 INFO L124 PetriNetUnfolderBase]: 567/981 cut-off events. [2024-06-04 14:07:03,296 INFO L125 PetriNetUnfolderBase]: For 59245/59245 co-relation queries the response was YES. [2024-06-04 14:07:03,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 981 events. 567/981 cut-off events. For 59245/59245 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4511 event pairs, 86 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 7705. Up to 783 conditions per place. [2024-06-04 14:07:03,303 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 160 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-06-04 14:07:03,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 214 transitions, 3041 flow [2024-06-04 14:07:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:07:03,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:07:03,305 INFO L175 Difference]: Start difference. First operand has 203 places, 193 transitions, 2353 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:07:03,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 214 transitions, 3041 flow [2024-06-04 14:07:03,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 214 transitions, 2922 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:03,413 INFO L231 Difference]: Finished difference. Result has 205 places, 197 transitions, 2452 flow [2024-06-04 14:07:03,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2452, PETRI_PLACES=205, PETRI_TRANSITIONS=197} [2024-06-04 14:07:03,413 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 173 predicate places. [2024-06-04 14:07:03,413 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 197 transitions, 2452 flow [2024-06-04 14:07:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:03,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:03,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:07:03,414 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:03,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash -923030086, now seen corresponding path program 3 times [2024-06-04 14:07:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:03,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204078196] [2024-06-04 14:07:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204078196] [2024-06-04 14:07:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204078196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:04,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:04,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336449670] [2024-06-04 14:07:04,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:04,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:04,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:04,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:04,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:04,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 197 transitions, 2452 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:04,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:04,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:04,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:05,216 INFO L124 PetriNetUnfolderBase]: 565/976 cut-off events. [2024-06-04 14:07:05,216 INFO L125 PetriNetUnfolderBase]: For 59897/59897 co-relation queries the response was YES. [2024-06-04 14:07:05,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7771 conditions, 976 events. 565/976 cut-off events. For 59897/59897 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4485 event pairs, 113 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 7676. Up to 884 conditions per place. [2024-06-04 14:07:05,223 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 33 changer transitions 0/210 dead transitions. [2024-06-04 14:07:05,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 210 transitions, 2951 flow [2024-06-04 14:07:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:07:05,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-04 14:07:05,224 INFO L175 Difference]: Start difference. First operand has 205 places, 197 transitions, 2452 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:07:05,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 210 transitions, 2951 flow [2024-06-04 14:07:05,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 210 transitions, 2839 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-04 14:07:05,322 INFO L231 Difference]: Finished difference. Result has 209 places, 199 transitions, 2465 flow [2024-06-04 14:07:05,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2465, PETRI_PLACES=209, PETRI_TRANSITIONS=199} [2024-06-04 14:07:05,322 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2024-06-04 14:07:05,323 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 199 transitions, 2465 flow [2024-06-04 14:07:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:05,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:05,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:05,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:07:05,323 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:05,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash -916780734, now seen corresponding path program 11 times [2024-06-04 14:07:05,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:05,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676470345] [2024-06-04 14:07:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:06,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676470345] [2024-06-04 14:07:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676470345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:06,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:06,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140156179] [2024-06-04 14:07:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:06,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:06,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:06,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 199 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:06,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:06,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:06,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:06,789 INFO L124 PetriNetUnfolderBase]: 571/988 cut-off events. [2024-06-04 14:07:06,789 INFO L125 PetriNetUnfolderBase]: For 61696/61696 co-relation queries the response was YES. [2024-06-04 14:07:06,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 988 events. 571/988 cut-off events. For 61696/61696 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4535 event pairs, 91 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7777. Up to 841 conditions per place. [2024-06-04 14:07:06,797 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 171 selfloop transitions, 41 changer transitions 0/214 dead transitions. [2024-06-04 14:07:06,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 2975 flow [2024-06-04 14:07:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:07:06,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:07:06,798 INFO L175 Difference]: Start difference. First operand has 209 places, 199 transitions, 2465 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:07:06,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 2975 flow [2024-06-04 14:07:06,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 2879 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:06,956 INFO L231 Difference]: Finished difference. Result has 211 places, 201 transitions, 2506 flow [2024-06-04 14:07:06,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2506, PETRI_PLACES=211, PETRI_TRANSITIONS=201} [2024-06-04 14:07:06,956 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-04 14:07:06,957 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 201 transitions, 2506 flow [2024-06-04 14:07:06,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:06,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:06,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:07:06,957 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:06,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash -93505674, now seen corresponding path program 12 times [2024-06-04 14:07:06,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956546666] [2024-06-04 14:07:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956546666] [2024-06-04 14:07:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956546666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844052757] [2024-06-04 14:07:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:08,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:08,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:08,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:08,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:08,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 201 transitions, 2506 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:08,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:08,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:08,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:08,527 INFO L124 PetriNetUnfolderBase]: 567/982 cut-off events. [2024-06-04 14:07:08,527 INFO L125 PetriNetUnfolderBase]: For 60999/60999 co-relation queries the response was YES. [2024-06-04 14:07:08,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7772 conditions, 982 events. 567/982 cut-off events. For 60999/60999 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4525 event pairs, 88 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 7674. Up to 810 conditions per place. [2024-06-04 14:07:08,538 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 166 selfloop transitions, 48 changer transitions 0/216 dead transitions. [2024-06-04 14:07:08,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 216 transitions, 2982 flow [2024-06-04 14:07:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:07:08,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:07:08,539 INFO L175 Difference]: Start difference. First operand has 211 places, 201 transitions, 2506 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:07:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 216 transitions, 2982 flow [2024-06-04 14:07:08,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 216 transitions, 2835 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:08,656 INFO L231 Difference]: Finished difference. Result has 213 places, 201 transitions, 2463 flow [2024-06-04 14:07:08,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2463, PETRI_PLACES=213, PETRI_TRANSITIONS=201} [2024-06-04 14:07:08,657 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-04 14:07:08,657 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 201 transitions, 2463 flow [2024-06-04 14:07:08,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:08,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:08,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:08,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:07:08,657 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:08,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1555199516, now seen corresponding path program 13 times [2024-06-04 14:07:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:08,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636762766] [2024-06-04 14:07:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:09,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:09,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636762766] [2024-06-04 14:07:09,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636762766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:09,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:09,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:09,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821030326] [2024-06-04 14:07:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:09,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:09,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:09,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:09,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 201 transitions, 2463 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:09,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:09,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:09,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:10,073 INFO L124 PetriNetUnfolderBase]: 563/976 cut-off events. [2024-06-04 14:07:10,074 INFO L125 PetriNetUnfolderBase]: For 59668/59668 co-relation queries the response was YES. [2024-06-04 14:07:10,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 976 events. 563/976 cut-off events. For 59668/59668 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4494 event pairs, 72 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 7496. Up to 556 conditions per place. [2024-06-04 14:07:10,080 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 124 selfloop transitions, 94 changer transitions 0/220 dead transitions. [2024-06-04 14:07:10,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 220 transitions, 3233 flow [2024-06-04 14:07:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 14:07:10,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-04 14:07:10,081 INFO L175 Difference]: Start difference. First operand has 213 places, 201 transitions, 2463 flow. Second operand 9 states and 109 transitions. [2024-06-04 14:07:10,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 220 transitions, 3233 flow [2024-06-04 14:07:10,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 220 transitions, 3082 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:10,198 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 2575 flow [2024-06-04 14:07:10,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2575, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2024-06-04 14:07:10,198 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-04 14:07:10,198 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 2575 flow [2024-06-04 14:07:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:10,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:10,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:10,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:07:10,199 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:10,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1732143906, now seen corresponding path program 3 times [2024-06-04 14:07:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:10,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394216913] [2024-06-04 14:07:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:12,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:12,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394216913] [2024-06-04 14:07:12,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394216913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:12,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:12,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556616802] [2024-06-04 14:07:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:12,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:12,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:12,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 2575 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:12,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:12,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:12,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:13,077 INFO L124 PetriNetUnfolderBase]: 569/984 cut-off events. [2024-06-04 14:07:13,078 INFO L125 PetriNetUnfolderBase]: For 61385/61385 co-relation queries the response was YES. [2024-06-04 14:07:13,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7777 conditions, 984 events. 569/984 cut-off events. For 61385/61385 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4550 event pairs, 113 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 7676. Up to 893 conditions per place. [2024-06-04 14:07:13,084 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 186 selfloop transitions, 30 changer transitions 0/218 dead transitions. [2024-06-04 14:07:13,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 218 transitions, 3097 flow [2024-06-04 14:07:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 14:07:13,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 14:07:13,086 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 2575 flow. Second operand 10 states and 105 transitions. [2024-06-04 14:07:13,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 218 transitions, 3097 flow [2024-06-04 14:07:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 218 transitions, 2900 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:13,204 INFO L231 Difference]: Finished difference. Result has 218 places, 205 transitions, 2493 flow [2024-06-04 14:07:13,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2493, PETRI_PLACES=218, PETRI_TRANSITIONS=205} [2024-06-04 14:07:13,204 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-04 14:07:13,204 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 205 transitions, 2493 flow [2024-06-04 14:07:13,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:13,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:13,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:13,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:07:13,205 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:13,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1554953438, now seen corresponding path program 4 times [2024-06-04 14:07:13,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:13,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608156931] [2024-06-04 14:07:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:13,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:14,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:14,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608156931] [2024-06-04 14:07:14,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608156931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:14,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:14,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251860666] [2024-06-04 14:07:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:14,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:14,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:14,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:14,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 205 transitions, 2493 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:14,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:14,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:14,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:14,666 INFO L124 PetriNetUnfolderBase]: 570/986 cut-off events. [2024-06-04 14:07:14,666 INFO L125 PetriNetUnfolderBase]: For 61512/61512 co-relation queries the response was YES. [2024-06-04 14:07:14,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7600 conditions, 986 events. 570/986 cut-off events. For 61512/61512 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4595 event pairs, 97 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 7498. Up to 865 conditions per place. [2024-06-04 14:07:14,673 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 177 selfloop transitions, 42 changer transitions 0/221 dead transitions. [2024-06-04 14:07:14,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 3031 flow [2024-06-04 14:07:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:07:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:07:14,674 INFO L175 Difference]: Start difference. First operand has 218 places, 205 transitions, 2493 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:07:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 3031 flow [2024-06-04 14:07:14,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 221 transitions, 2938 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:14,797 INFO L231 Difference]: Finished difference. Result has 220 places, 207 transitions, 2543 flow [2024-06-04 14:07:14,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2543, PETRI_PLACES=220, PETRI_TRANSITIONS=207} [2024-06-04 14:07:14,798 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-04 14:07:14,798 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 207 transitions, 2543 flow [2024-06-04 14:07:14,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:14,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:14,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:14,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:07:14,798 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:14,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1259734238, now seen corresponding path program 5 times [2024-06-04 14:07:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957756008] [2024-06-04 14:07:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:16,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:16,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957756008] [2024-06-04 14:07:16,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957756008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:16,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:16,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:16,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062441530] [2024-06-04 14:07:16,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:16,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:16,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:16,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:16,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 207 transitions, 2543 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:16,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:16,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:16,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:16,560 INFO L124 PetriNetUnfolderBase]: 566/982 cut-off events. [2024-06-04 14:07:16,560 INFO L125 PetriNetUnfolderBase]: For 58975/58975 co-relation queries the response was YES. [2024-06-04 14:07:16,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 982 events. 566/982 cut-off events. For 58975/58975 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4564 event pairs, 183 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 7383. Up to 934 conditions per place. [2024-06-04 14:07:16,568 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 197 selfloop transitions, 20 changer transitions 0/219 dead transitions. [2024-06-04 14:07:16,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 219 transitions, 3011 flow [2024-06-04 14:07:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 14:07:16,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2975206611570248 [2024-06-04 14:07:16,569 INFO L175 Difference]: Start difference. First operand has 220 places, 207 transitions, 2543 flow. Second operand 11 states and 108 transitions. [2024-06-04 14:07:16,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 219 transitions, 3011 flow [2024-06-04 14:07:16,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 219 transitions, 2882 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:16,683 INFO L231 Difference]: Finished difference. Result has 223 places, 207 transitions, 2459 flow [2024-06-04 14:07:16,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2459, PETRI_PLACES=223, PETRI_TRANSITIONS=207} [2024-06-04 14:07:16,684 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2024-06-04 14:07:16,684 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 207 transitions, 2459 flow [2024-06-04 14:07:16,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:16,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:16,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:07:16,684 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:16,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1502464224, now seen corresponding path program 14 times [2024-06-04 14:07:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:16,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041218582] [2024-06-04 14:07:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:17,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041218582] [2024-06-04 14:07:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041218582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:17,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:17,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:17,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694780451] [2024-06-04 14:07:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:17,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:17,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:17,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:17,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:17,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:17,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 207 transitions, 2459 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:17,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:17,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:17,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:17,913 INFO L124 PetriNetUnfolderBase]: 562/976 cut-off events. [2024-06-04 14:07:17,913 INFO L125 PetriNetUnfolderBase]: For 57036/57036 co-relation queries the response was YES. [2024-06-04 14:07:17,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 976 events. 562/976 cut-off events. For 57036/57036 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4515 event pairs, 182 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 7150. Up to 942 conditions per place. [2024-06-04 14:07:17,920 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 200 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-06-04 14:07:17,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 217 transitions, 2917 flow [2024-06-04 14:07:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-04 14:07:17,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3063973063973064 [2024-06-04 14:07:17,921 INFO L175 Difference]: Start difference. First operand has 223 places, 207 transitions, 2459 flow. Second operand 9 states and 91 transitions. [2024-06-04 14:07:17,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 217 transitions, 2917 flow [2024-06-04 14:07:18,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 217 transitions, 2832 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-04 14:07:18,059 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 2409 flow [2024-06-04 14:07:18,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2409, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2024-06-04 14:07:18,059 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2024-06-04 14:07:18,059 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 2409 flow [2024-06-04 14:07:18,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:18,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:18,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:18,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:07:18,060 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:18,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1269853568, now seen corresponding path program 6 times [2024-06-04 14:07:18,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:18,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811868595] [2024-06-04 14:07:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:18,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:19,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:19,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811868595] [2024-06-04 14:07:19,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811868595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:19,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:19,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626869797] [2024-06-04 14:07:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:19,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:19,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:19,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:19,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:19,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:19,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:19,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:19,484 INFO L124 PetriNetUnfolderBase]: 558/970 cut-off events. [2024-06-04 14:07:19,484 INFO L125 PetriNetUnfolderBase]: For 54876/54876 co-relation queries the response was YES. [2024-06-04 14:07:19,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7061 conditions, 970 events. 558/970 cut-off events. For 54876/54876 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4507 event pairs, 177 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 6956. Up to 900 conditions per place. [2024-06-04 14:07:19,490 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 194 selfloop transitions, 24 changer transitions 0/220 dead transitions. [2024-06-04 14:07:19,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 220 transitions, 2889 flow [2024-06-04 14:07:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:07:19,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:07:19,491 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 2409 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:07:19,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 220 transitions, 2889 flow [2024-06-04 14:07:19,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 220 transitions, 2842 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:19,602 INFO L231 Difference]: Finished difference. Result has 224 places, 207 transitions, 2415 flow [2024-06-04 14:07:19,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2415, PETRI_PLACES=224, PETRI_TRANSITIONS=207} [2024-06-04 14:07:19,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-04 14:07:19,603 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 207 transitions, 2415 flow [2024-06-04 14:07:19,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:19,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:19,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:19,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:07:19,604 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:19,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -521375733, now seen corresponding path program 1 times [2024-06-04 14:07:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424201431] [2024-06-04 14:07:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:20,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424201431] [2024-06-04 14:07:20,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424201431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:20,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:20,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:20,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520791453] [2024-06-04 14:07:20,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:20,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:20,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:20,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:20,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 207 transitions, 2415 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:20,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:20,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:20,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:20,953 INFO L124 PetriNetUnfolderBase]: 592/1036 cut-off events. [2024-06-04 14:07:20,954 INFO L125 PetriNetUnfolderBase]: For 57266/57266 co-relation queries the response was YES. [2024-06-04 14:07:20,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1036 events. 592/1036 cut-off events. For 57266/57266 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4970 event pairs, 112 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7282. Up to 900 conditions per place. [2024-06-04 14:07:20,961 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 202 selfloop transitions, 36 changer transitions 0/240 dead transitions. [2024-06-04 14:07:20,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 240 transitions, 3051 flow [2024-06-04 14:07:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:07:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:07:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:07:20,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-04 14:07:20,968 INFO L175 Difference]: Start difference. First operand has 224 places, 207 transitions, 2415 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:07:20,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 240 transitions, 3051 flow [2024-06-04 14:07:21,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 240 transitions, 2987 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:21,085 INFO L231 Difference]: Finished difference. Result has 229 places, 217 transitions, 2540 flow [2024-06-04 14:07:21,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2540, PETRI_PLACES=229, PETRI_TRANSITIONS=217} [2024-06-04 14:07:21,085 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 197 predicate places. [2024-06-04 14:07:21,086 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 217 transitions, 2540 flow [2024-06-04 14:07:21,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:21,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:21,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:07:21,086 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash 254414457, now seen corresponding path program 2 times [2024-06-04 14:07:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:21,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751385063] [2024-06-04 14:07:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:21,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:22,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751385063] [2024-06-04 14:07:22,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751385063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:22,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:22,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:22,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216464639] [2024-06-04 14:07:22,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:22,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:22,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:22,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:22,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:22,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 217 transitions, 2540 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:22,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:22,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:22,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:22,668 INFO L124 PetriNetUnfolderBase]: 605/1059 cut-off events. [2024-06-04 14:07:22,668 INFO L125 PetriNetUnfolderBase]: For 58749/58749 co-relation queries the response was YES. [2024-06-04 14:07:22,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7614 conditions, 1059 events. 605/1059 cut-off events. For 58749/58749 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5119 event pairs, 124 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7505. Up to 938 conditions per place. [2024-06-04 14:07:22,677 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 203 selfloop transitions, 37 changer transitions 0/242 dead transitions. [2024-06-04 14:07:22,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 242 transitions, 3142 flow [2024-06-04 14:07:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:07:22,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:07:22,678 INFO L175 Difference]: Start difference. First operand has 229 places, 217 transitions, 2540 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:07:22,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 242 transitions, 3142 flow [2024-06-04 14:07:22,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 3065 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:22,809 INFO L231 Difference]: Finished difference. Result has 235 places, 222 transitions, 2624 flow [2024-06-04 14:07:22,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2624, PETRI_PLACES=235, PETRI_TRANSITIONS=222} [2024-06-04 14:07:22,810 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-04 14:07:22,810 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 222 transitions, 2624 flow [2024-06-04 14:07:22,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:22,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:22,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:07:22,811 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:22,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash 254295417, now seen corresponding path program 3 times [2024-06-04 14:07:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:22,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634356713] [2024-06-04 14:07:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:23,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634356713] [2024-06-04 14:07:23,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634356713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:23,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:23,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:23,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491787547] [2024-06-04 14:07:23,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:23,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:23,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:23,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:23,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:23,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:23,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 222 transitions, 2624 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:23,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:23,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:23,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:24,226 INFO L124 PetriNetUnfolderBase]: 609/1067 cut-off events. [2024-06-04 14:07:24,227 INFO L125 PetriNetUnfolderBase]: For 61177/61177 co-relation queries the response was YES. [2024-06-04 14:07:24,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7711 conditions, 1067 events. 609/1067 cut-off events. For 61177/61177 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5164 event pairs, 128 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 7600. Up to 949 conditions per place. [2024-06-04 14:07:24,235 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 207 selfloop transitions, 34 changer transitions 0/243 dead transitions. [2024-06-04 14:07:24,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 243 transitions, 3180 flow [2024-06-04 14:07:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:07:24,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:07:24,236 INFO L175 Difference]: Start difference. First operand has 235 places, 222 transitions, 2624 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:07:24,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 243 transitions, 3180 flow [2024-06-04 14:07:24,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 243 transitions, 3099 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:24,373 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2637 flow [2024-06-04 14:07:24,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2637, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-04 14:07:24,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-04 14:07:24,373 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2637 flow [2024-06-04 14:07:24,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:24,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:24,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:24,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:07:24,374 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:24,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:24,374 INFO L85 PathProgramCache]: Analyzing trace with hash 811857211, now seen corresponding path program 4 times [2024-06-04 14:07:24,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:24,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656217579] [2024-06-04 14:07:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:24,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:25,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:25,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656217579] [2024-06-04 14:07:25,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656217579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:25,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:25,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932767974] [2024-06-04 14:07:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:25,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:07:25,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2637 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:25,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:25,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:07:25,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:25,446 INFO L124 PetriNetUnfolderBase]: 612/1082 cut-off events. [2024-06-04 14:07:25,446 INFO L125 PetriNetUnfolderBase]: For 63533/63538 co-relation queries the response was YES. [2024-06-04 14:07:25,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 1082 events. 612/1082 cut-off events. For 63533/63538 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5384 event pairs, 91 based on Foata normal form. 6/1086 useless extension candidates. Maximal degree in co-relation 7647. Up to 883 conditions per place. [2024-06-04 14:07:25,456 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 196 selfloop transitions, 37 changer transitions 0/243 dead transitions. [2024-06-04 14:07:25,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 243 transitions, 3179 flow [2024-06-04 14:07:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:07:25,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:07:25,457 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2637 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:07:25,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 243 transitions, 3179 flow [2024-06-04 14:07:25,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 243 transitions, 3098 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:25,611 INFO L231 Difference]: Finished difference. Result has 241 places, 226 transitions, 2674 flow [2024-06-04 14:07:25,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2674, PETRI_PLACES=241, PETRI_TRANSITIONS=226} [2024-06-04 14:07:25,612 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-04 14:07:25,612 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 226 transitions, 2674 flow [2024-06-04 14:07:25,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:25,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:25,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:25,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:07:25,612 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:25,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash -769848967, now seen corresponding path program 5 times [2024-06-04 14:07:25,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:25,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023750767] [2024-06-04 14:07:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:26,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:26,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023750767] [2024-06-04 14:07:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023750767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:26,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:26,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598182826] [2024-06-04 14:07:26,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:26,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:26,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:26,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:26,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 226 transitions, 2674 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:26,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:26,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:26,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:27,135 INFO L124 PetriNetUnfolderBase]: 626/1102 cut-off events. [2024-06-04 14:07:27,136 INFO L125 PetriNetUnfolderBase]: For 65078/65078 co-relation queries the response was YES. [2024-06-04 14:07:27,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7931 conditions, 1102 events. 626/1102 cut-off events. For 65078/65078 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5445 event pairs, 106 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7817. Up to 999 conditions per place. [2024-06-04 14:07:27,145 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 215 selfloop transitions, 29 changer transitions 0/246 dead transitions. [2024-06-04 14:07:27,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 246 transitions, 3242 flow [2024-06-04 14:07:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:07:27,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:07:27,147 INFO L175 Difference]: Start difference. First operand has 241 places, 226 transitions, 2674 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:07:27,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 246 transitions, 3242 flow [2024-06-04 14:07:27,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 246 transitions, 3156 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:27,315 INFO L231 Difference]: Finished difference. Result has 245 places, 227 transitions, 2677 flow [2024-06-04 14:07:27,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2677, PETRI_PLACES=245, PETRI_TRANSITIONS=227} [2024-06-04 14:07:27,316 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2024-06-04 14:07:27,316 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 227 transitions, 2677 flow [2024-06-04 14:07:27,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:27,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:27,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:27,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:07:27,317 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:27,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1620575625, now seen corresponding path program 1 times [2024-06-04 14:07:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936331340] [2024-06-04 14:07:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:28,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:28,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936331340] [2024-06-04 14:07:28,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936331340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:28,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:28,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121921461] [2024-06-04 14:07:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:28,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:28,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:28,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 227 transitions, 2677 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:28,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:28,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:28,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:29,189 INFO L124 PetriNetUnfolderBase]: 638/1122 cut-off events. [2024-06-04 14:07:29,189 INFO L125 PetriNetUnfolderBase]: For 67832/67832 co-relation queries the response was YES. [2024-06-04 14:07:29,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8047 conditions, 1122 events. 638/1122 cut-off events. For 67832/67832 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5571 event pairs, 131 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 7933. Up to 1005 conditions per place. [2024-06-04 14:07:29,199 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 217 selfloop transitions, 34 changer transitions 0/253 dead transitions. [2024-06-04 14:07:29,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 3313 flow [2024-06-04 14:07:29,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:07:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:07:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 14:07:29,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:07:29,200 INFO L175 Difference]: Start difference. First operand has 245 places, 227 transitions, 2677 flow. Second operand 12 states and 128 transitions. [2024-06-04 14:07:29,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 3313 flow [2024-06-04 14:07:29,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 253 transitions, 3181 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:29,371 INFO L231 Difference]: Finished difference. Result has 249 places, 232 transitions, 2703 flow [2024-06-04 14:07:29,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2703, PETRI_PLACES=249, PETRI_TRANSITIONS=232} [2024-06-04 14:07:29,372 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2024-06-04 14:07:29,372 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 232 transitions, 2703 flow [2024-06-04 14:07:29,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:29,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:29,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:07:29,373 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:29,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 891257418, now seen corresponding path program 1 times [2024-06-04 14:07:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701561662] [2024-06-04 14:07:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701561662] [2024-06-04 14:07:30,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701561662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:30,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:30,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:30,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923313753] [2024-06-04 14:07:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:30,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:30,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:30,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 232 transitions, 2703 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:30,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:30,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:30,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:30,895 INFO L124 PetriNetUnfolderBase]: 641/1127 cut-off events. [2024-06-04 14:07:30,895 INFO L125 PetriNetUnfolderBase]: For 66211/66211 co-relation queries the response was YES. [2024-06-04 14:07:30,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1127 events. 641/1127 cut-off events. For 66211/66211 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5567 event pairs, 129 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 7991. Up to 1009 conditions per place. [2024-06-04 14:07:30,907 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 214 selfloop transitions, 37 changer transitions 0/253 dead transitions. [2024-06-04 14:07:30,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 3303 flow [2024-06-04 14:07:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:07:30,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:07:30,909 INFO L175 Difference]: Start difference. First operand has 249 places, 232 transitions, 2703 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:07:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 3303 flow [2024-06-04 14:07:31,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 253 transitions, 3196 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:31,137 INFO L231 Difference]: Finished difference. Result has 253 places, 234 transitions, 2726 flow [2024-06-04 14:07:31,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2596, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2726, PETRI_PLACES=253, PETRI_TRANSITIONS=234} [2024-06-04 14:07:31,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2024-06-04 14:07:31,137 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 234 transitions, 2726 flow [2024-06-04 14:07:31,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:31,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:31,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:31,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:07:31,138 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:31,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:31,138 INFO L85 PathProgramCache]: Analyzing trace with hash -962236473, now seen corresponding path program 6 times [2024-06-04 14:07:31,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:31,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730308383] [2024-06-04 14:07:31,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:31,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730308383] [2024-06-04 14:07:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730308383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:31,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:31,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:31,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496119738] [2024-06-04 14:07:31,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:31,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:31,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:32,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:32,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 234 transitions, 2726 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:32,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:32,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:32,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:32,567 INFO L124 PetriNetUnfolderBase]: 649/1143 cut-off events. [2024-06-04 14:07:32,567 INFO L125 PetriNetUnfolderBase]: For 71026/71026 co-relation queries the response was YES. [2024-06-04 14:07:32,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8189 conditions, 1143 events. 649/1143 cut-off events. For 71026/71026 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5714 event pairs, 104 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 8073. Up to 1043 conditions per place. [2024-06-04 14:07:32,578 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 227 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-04 14:07:32,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 255 transitions, 3320 flow [2024-06-04 14:07:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:07:32,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:32,579 INFO L175 Difference]: Start difference. First operand has 253 places, 234 transitions, 2726 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:07:32,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 255 transitions, 3320 flow [2024-06-04 14:07:32,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 255 transitions, 3224 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:32,787 INFO L231 Difference]: Finished difference. Result has 255 places, 236 transitions, 2727 flow [2024-06-04 14:07:32,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2727, PETRI_PLACES=255, PETRI_TRANSITIONS=236} [2024-06-04 14:07:32,788 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2024-06-04 14:07:32,788 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 236 transitions, 2727 flow [2024-06-04 14:07:32,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:32,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:32,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:32,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:07:32,788 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:32,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash -964110423, now seen corresponding path program 7 times [2024-06-04 14:07:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:32,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699347777] [2024-06-04 14:07:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:32,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:33,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699347777] [2024-06-04 14:07:33,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699347777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:33,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880441759] [2024-06-04 14:07:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:33,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:33,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:33,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:33,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 236 transitions, 2727 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:33,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:33,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:33,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:34,162 INFO L124 PetriNetUnfolderBase]: 662/1170 cut-off events. [2024-06-04 14:07:34,163 INFO L125 PetriNetUnfolderBase]: For 73867/73867 co-relation queries the response was YES. [2024-06-04 14:07:34,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8316 conditions, 1170 events. 662/1170 cut-off events. For 73867/73867 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5919 event pairs, 102 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 8198. Up to 1052 conditions per place. [2024-06-04 14:07:34,172 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 231 selfloop transitions, 28 changer transitions 0/261 dead transitions. [2024-06-04 14:07:34,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 261 transitions, 3350 flow [2024-06-04 14:07:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:07:34,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:07:34,173 INFO L175 Difference]: Start difference. First operand has 255 places, 236 transitions, 2727 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:07:34,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 261 transitions, 3350 flow [2024-06-04 14:07:34,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 261 transitions, 3277 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:34,393 INFO L231 Difference]: Finished difference. Result has 261 places, 239 transitions, 2770 flow [2024-06-04 14:07:34,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2770, PETRI_PLACES=261, PETRI_TRANSITIONS=239} [2024-06-04 14:07:34,394 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-06-04 14:07:34,394 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 239 transitions, 2770 flow [2024-06-04 14:07:34,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:34,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:34,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:34,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:07:34,395 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:34,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:34,395 INFO L85 PathProgramCache]: Analyzing trace with hash -875390841, now seen corresponding path program 2 times [2024-06-04 14:07:34,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:34,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233256173] [2024-06-04 14:07:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:34,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233256173] [2024-06-04 14:07:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233256173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:35,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:35,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340511851] [2024-06-04 14:07:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:35,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:35,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:35,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 239 transitions, 2770 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:35,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:35,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:35,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:36,427 INFO L124 PetriNetUnfolderBase]: 668/1180 cut-off events. [2024-06-04 14:07:36,428 INFO L125 PetriNetUnfolderBase]: For 76056/76056 co-relation queries the response was YES. [2024-06-04 14:07:36,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 1180 events. 668/1180 cut-off events. For 76056/76056 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5973 event pairs, 108 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 8314. Up to 1075 conditions per place. [2024-06-04 14:07:36,439 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 231 selfloop transitions, 29 changer transitions 0/262 dead transitions. [2024-06-04 14:07:36,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 262 transitions, 3410 flow [2024-06-04 14:07:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:07:36,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:36,440 INFO L175 Difference]: Start difference. First operand has 261 places, 239 transitions, 2770 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:07:36,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 262 transitions, 3410 flow [2024-06-04 14:07:36,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 262 transitions, 3331 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:36,679 INFO L231 Difference]: Finished difference. Result has 266 places, 242 transitions, 2824 flow [2024-06-04 14:07:36,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2824, PETRI_PLACES=266, PETRI_TRANSITIONS=242} [2024-06-04 14:07:36,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 234 predicate places. [2024-06-04 14:07:36,679 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 242 transitions, 2824 flow [2024-06-04 14:07:36,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:36,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:36,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:36,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:07:36,680 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:36,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash -875540788, now seen corresponding path program 2 times [2024-06-04 14:07:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209542708] [2024-06-04 14:07:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209542708] [2024-06-04 14:07:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209542708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:37,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:37,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:37,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276165159] [2024-06-04 14:07:37,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:37,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:37,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 242 transitions, 2824 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:37,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:37,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:37,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:38,262 INFO L124 PetriNetUnfolderBase]: 666/1177 cut-off events. [2024-06-04 14:07:38,262 INFO L125 PetriNetUnfolderBase]: For 72882/72882 co-relation queries the response was YES. [2024-06-04 14:07:38,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 1177 events. 666/1177 cut-off events. For 72882/72882 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5971 event pairs, 108 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 8233. Up to 1071 conditions per place. [2024-06-04 14:07:38,272 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 226 selfloop transitions, 32 changer transitions 0/260 dead transitions. [2024-06-04 14:07:38,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 260 transitions, 3394 flow [2024-06-04 14:07:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:07:38,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:07:38,273 INFO L175 Difference]: Start difference. First operand has 266 places, 242 transitions, 2824 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:07:38,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 260 transitions, 3394 flow [2024-06-04 14:07:38,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 260 transitions, 3276 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:38,511 INFO L231 Difference]: Finished difference. Result has 269 places, 242 transitions, 2778 flow [2024-06-04 14:07:38,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2778, PETRI_PLACES=269, PETRI_TRANSITIONS=242} [2024-06-04 14:07:38,512 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-04 14:07:38,512 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 242 transitions, 2778 flow [2024-06-04 14:07:38,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:38,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:38,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:07:38,513 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:38,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1596481969, now seen corresponding path program 8 times [2024-06-04 14:07:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856074620] [2024-06-04 14:07:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:39,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:39,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856074620] [2024-06-04 14:07:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856074620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:39,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757237015] [2024-06-04 14:07:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:39,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:39,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 242 transitions, 2778 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:39,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:39,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:39,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:39,984 INFO L124 PetriNetUnfolderBase]: 670/1185 cut-off events. [2024-06-04 14:07:39,984 INFO L125 PetriNetUnfolderBase]: For 77410/77410 co-relation queries the response was YES. [2024-06-04 14:07:39,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 1185 events. 670/1185 cut-off events. For 77410/77410 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6032 event pairs, 103 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 8264. Up to 1026 conditions per place. [2024-06-04 14:07:39,994 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 213 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-06-04 14:07:39,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 260 transitions, 3372 flow [2024-06-04 14:07:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:07:39,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:07:39,995 INFO L175 Difference]: Start difference. First operand has 269 places, 242 transitions, 2778 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:07:39,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 260 transitions, 3372 flow [2024-06-04 14:07:40,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 260 transitions, 3298 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:40,240 INFO L231 Difference]: Finished difference. Result has 271 places, 243 transitions, 2830 flow [2024-06-04 14:07:40,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2830, PETRI_PLACES=271, PETRI_TRANSITIONS=243} [2024-06-04 14:07:40,241 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-04 14:07:40,241 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 243 transitions, 2830 flow [2024-06-04 14:07:40,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:40,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:40,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:40,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:07:40,241 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:40,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1596485689, now seen corresponding path program 9 times [2024-06-04 14:07:40,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:40,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948742405] [2024-06-04 14:07:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:40,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:41,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948742405] [2024-06-04 14:07:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948742405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:41,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351966339] [2024-06-04 14:07:41,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:41,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:41,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:41,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 243 transitions, 2830 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:41,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:41,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:41,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:41,702 INFO L124 PetriNetUnfolderBase]: 678/1201 cut-off events. [2024-06-04 14:07:41,703 INFO L125 PetriNetUnfolderBase]: For 80118/80118 co-relation queries the response was YES. [2024-06-04 14:07:41,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 1201 events. 678/1201 cut-off events. For 80118/80118 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6143 event pairs, 101 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 8420. Up to 1042 conditions per place. [2024-06-04 14:07:41,713 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 216 selfloop transitions, 44 changer transitions 0/262 dead transitions. [2024-06-04 14:07:41,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 262 transitions, 3431 flow [2024-06-04 14:07:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:07:41,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:07:41,714 INFO L175 Difference]: Start difference. First operand has 271 places, 243 transitions, 2830 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:07:41,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 262 transitions, 3431 flow [2024-06-04 14:07:41,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 262 transitions, 3305 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:41,963 INFO L231 Difference]: Finished difference. Result has 274 places, 245 transitions, 2837 flow [2024-06-04 14:07:41,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2837, PETRI_PLACES=274, PETRI_TRANSITIONS=245} [2024-06-04 14:07:41,964 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-04 14:07:41,964 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 245 transitions, 2837 flow [2024-06-04 14:07:41,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:41,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:41,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:41,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:07:41,964 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:41,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1590975439, now seen corresponding path program 10 times [2024-06-04 14:07:41,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:41,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417055756] [2024-06-04 14:07:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:41,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:42,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:42,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417055756] [2024-06-04 14:07:42,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417055756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:42,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:42,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:42,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138322389] [2024-06-04 14:07:42,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:42,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:42,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:42,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:42,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 245 transitions, 2837 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:42,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:42,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:42,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:43,325 INFO L124 PetriNetUnfolderBase]: 682/1209 cut-off events. [2024-06-04 14:07:43,325 INFO L125 PetriNetUnfolderBase]: For 80265/80265 co-relation queries the response was YES. [2024-06-04 14:07:43,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8564 conditions, 1209 events. 682/1209 cut-off events. For 80265/80265 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6201 event pairs, 95 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 8438. Up to 1011 conditions per place. [2024-06-04 14:07:43,336 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 205 selfloop transitions, 58 changer transitions 0/265 dead transitions. [2024-06-04 14:07:43,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 265 transitions, 3455 flow [2024-06-04 14:07:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:07:43,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:07:43,337 INFO L175 Difference]: Start difference. First operand has 274 places, 245 transitions, 2837 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:07:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 265 transitions, 3455 flow [2024-06-04 14:07:43,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 265 transitions, 3334 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:43,587 INFO L231 Difference]: Finished difference. Result has 276 places, 246 transitions, 2872 flow [2024-06-04 14:07:43,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2872, PETRI_PLACES=276, PETRI_TRANSITIONS=246} [2024-06-04 14:07:43,587 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 244 predicate places. [2024-06-04 14:07:43,587 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 246 transitions, 2872 flow [2024-06-04 14:07:43,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:43,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:43,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:43,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:07:43,588 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:43,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash 663940545, now seen corresponding path program 3 times [2024-06-04 14:07:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:43,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671442953] [2024-06-04 14:07:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:45,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671442953] [2024-06-04 14:07:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671442953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:45,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:45,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140805860] [2024-06-04 14:07:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:45,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:45,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 246 transitions, 2872 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:45,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:45,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:45,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:45,751 INFO L124 PetriNetUnfolderBase]: 688/1219 cut-off events. [2024-06-04 14:07:45,751 INFO L125 PetriNetUnfolderBase]: For 82413/82413 co-relation queries the response was YES. [2024-06-04 14:07:45,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 1219 events. 688/1219 cut-off events. For 82413/82413 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6259 event pairs, 95 based on Foata normal form. 2/1221 useless extension candidates. Maximal degree in co-relation 8543. Up to 1011 conditions per place. [2024-06-04 14:07:45,760 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 206 selfloop transitions, 61 changer transitions 0/269 dead transitions. [2024-06-04 14:07:45,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 269 transitions, 3530 flow [2024-06-04 14:07:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:07:45,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:07:45,761 INFO L175 Difference]: Start difference. First operand has 276 places, 246 transitions, 2872 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:07:45,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 269 transitions, 3530 flow [2024-06-04 14:07:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 269 transitions, 3384 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:46,048 INFO L231 Difference]: Finished difference. Result has 279 places, 248 transitions, 2915 flow [2024-06-04 14:07:46,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2915, PETRI_PLACES=279, PETRI_TRANSITIONS=248} [2024-06-04 14:07:46,048 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-04 14:07:46,048 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 248 transitions, 2915 flow [2024-06-04 14:07:46,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:46,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:46,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:46,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:07:46,049 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:46,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash 658578165, now seen corresponding path program 4 times [2024-06-04 14:07:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124070624] [2024-06-04 14:07:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124070624] [2024-06-04 14:07:47,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124070624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:47,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917282968] [2024-06-04 14:07:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:47,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:47,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 248 transitions, 2915 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:47,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:47,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:47,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:47,978 INFO L124 PetriNetUnfolderBase]: 694/1229 cut-off events. [2024-06-04 14:07:47,978 INFO L125 PetriNetUnfolderBase]: For 84417/84417 co-relation queries the response was YES. [2024-06-04 14:07:47,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 1229 events. 694/1229 cut-off events. For 84417/84417 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6317 event pairs, 105 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 8650. Up to 1060 conditions per place. [2024-06-04 14:07:47,989 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 219 selfloop transitions, 48 changer transitions 0/269 dead transitions. [2024-06-04 14:07:47,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 269 transitions, 3567 flow [2024-06-04 14:07:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:07:47,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:07:47,990 INFO L175 Difference]: Start difference. First operand has 279 places, 248 transitions, 2915 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:07:47,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 269 transitions, 3567 flow [2024-06-04 14:07:48,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 269 transitions, 3394 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:48,262 INFO L231 Difference]: Finished difference. Result has 281 places, 250 transitions, 2909 flow [2024-06-04 14:07:48,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2909, PETRI_PLACES=281, PETRI_TRANSITIONS=250} [2024-06-04 14:07:48,263 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 249 predicate places. [2024-06-04 14:07:48,263 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 250 transitions, 2909 flow [2024-06-04 14:07:48,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:48,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:48,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:48,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:07:48,263 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:48,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash 664150074, now seen corresponding path program 1 times [2024-06-04 14:07:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:48,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146105606] [2024-06-04 14:07:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:48,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:49,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146105606] [2024-06-04 14:07:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146105606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347398361] [2024-06-04 14:07:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:49,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:49,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:49,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:49,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 250 transitions, 2909 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:49,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:49,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:50,196 INFO L124 PetriNetUnfolderBase]: 692/1226 cut-off events. [2024-06-04 14:07:50,196 INFO L125 PetriNetUnfolderBase]: For 80565/80565 co-relation queries the response was YES. [2024-06-04 14:07:50,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8629 conditions, 1226 events. 692/1226 cut-off events. For 80565/80565 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6340 event pairs, 178 based on Foata normal form. 1/1227 useless extension candidates. Maximal degree in co-relation 8501. Up to 1119 conditions per place. [2024-06-04 14:07:50,205 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 227 selfloop transitions, 38 changer transitions 0/267 dead transitions. [2024-06-04 14:07:50,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 267 transitions, 3495 flow [2024-06-04 14:07:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:07:50,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:07:50,206 INFO L175 Difference]: Start difference. First operand has 281 places, 250 transitions, 2909 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:07:50,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 267 transitions, 3495 flow [2024-06-04 14:07:50,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 267 transitions, 3332 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:50,514 INFO L231 Difference]: Finished difference. Result has 283 places, 250 transitions, 2830 flow [2024-06-04 14:07:50,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2830, PETRI_PLACES=283, PETRI_TRANSITIONS=250} [2024-06-04 14:07:50,514 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-04 14:07:50,514 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 250 transitions, 2830 flow [2024-06-04 14:07:50,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:50,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:50,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:50,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:07:50,514 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:50,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash -954293383, now seen corresponding path program 5 times [2024-06-04 14:07:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:50,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991410303] [2024-06-04 14:07:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:51,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:51,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991410303] [2024-06-04 14:07:51,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991410303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:51,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:51,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:51,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050205895] [2024-06-04 14:07:51,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:51,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:51,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:51,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 250 transitions, 2830 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:51,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:51,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:51,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:52,632 INFO L124 PetriNetUnfolderBase]: 708/1252 cut-off events. [2024-06-04 14:07:52,632 INFO L125 PetriNetUnfolderBase]: For 92003/92003 co-relation queries the response was YES. [2024-06-04 14:07:52,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 1252 events. 708/1252 cut-off events. For 92003/92003 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6490 event pairs, 94 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 8843. Up to 937 conditions per place. [2024-06-04 14:07:52,643 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 189 selfloop transitions, 87 changer transitions 0/278 dead transitions. [2024-06-04 14:07:52,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 278 transitions, 3748 flow [2024-06-04 14:07:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:07:52,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:07:52,644 INFO L175 Difference]: Start difference. First operand has 283 places, 250 transitions, 2830 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:07:52,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 278 transitions, 3748 flow [2024-06-04 14:07:52,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 278 transitions, 3616 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 14:07:52,937 INFO L231 Difference]: Finished difference. Result has 283 places, 254 transitions, 3018 flow [2024-06-04 14:07:52,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3018, PETRI_PLACES=283, PETRI_TRANSITIONS=254} [2024-06-04 14:07:52,937 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-04 14:07:52,937 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 254 transitions, 3018 flow [2024-06-04 14:07:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:52,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:52,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:52,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:07:52,937 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:52,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:52,938 INFO L85 PathProgramCache]: Analyzing trace with hash 664142355, now seen corresponding path program 6 times [2024-06-04 14:07:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913787854] [2024-06-04 14:07:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:52,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913787854] [2024-06-04 14:07:54,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913787854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:54,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:54,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:54,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286892991] [2024-06-04 14:07:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:54,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:54,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:54,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:54,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 254 transitions, 3018 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:54,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:54,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:54,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:54,939 INFO L124 PetriNetUnfolderBase]: 709/1254 cut-off events. [2024-06-04 14:07:54,939 INFO L125 PetriNetUnfolderBase]: For 87839/87839 co-relation queries the response was YES. [2024-06-04 14:07:54,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 1254 events. 709/1254 cut-off events. For 87839/87839 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6490 event pairs, 94 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 8902. Up to 940 conditions per place. [2024-06-04 14:07:54,949 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 194 selfloop transitions, 83 changer transitions 0/279 dead transitions. [2024-06-04 14:07:54,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 279 transitions, 3866 flow [2024-06-04 14:07:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:07:54,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:07:54,950 INFO L175 Difference]: Start difference. First operand has 283 places, 254 transitions, 3018 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:07:54,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 279 transitions, 3866 flow [2024-06-04 14:07:55,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 3689 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:55,265 INFO L231 Difference]: Finished difference. Result has 287 places, 256 transitions, 3080 flow [2024-06-04 14:07:55,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3080, PETRI_PLACES=287, PETRI_TRANSITIONS=256} [2024-06-04 14:07:55,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-04 14:07:55,265 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 3080 flow [2024-06-04 14:07:55,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:55,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:55,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:55,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:07:55,266 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:55,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash 463672653, now seen corresponding path program 1 times [2024-06-04 14:07:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:55,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621475869] [2024-06-04 14:07:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:55,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:56,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621475869] [2024-06-04 14:07:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621475869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:56,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:56,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:56,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388636463] [2024-06-04 14:07:56,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:56,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:56,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:56,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:56,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:57,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:57,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 256 transitions, 3080 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:57,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:57,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:57,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:57,631 INFO L124 PetriNetUnfolderBase]: 717/1271 cut-off events. [2024-06-04 14:07:57,631 INFO L125 PetriNetUnfolderBase]: For 95481/95481 co-relation queries the response was YES. [2024-06-04 14:07:57,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1271 events. 717/1271 cut-off events. For 95481/95481 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6677 event pairs, 169 based on Foata normal form. 4/1275 useless extension candidates. Maximal degree in co-relation 9038. Up to 1159 conditions per place. [2024-06-04 14:07:57,641 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 241 selfloop transitions, 34 changer transitions 0/277 dead transitions. [2024-06-04 14:07:57,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 277 transitions, 3714 flow [2024-06-04 14:07:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:07:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:07:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:07:57,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-04 14:07:57,642 INFO L175 Difference]: Start difference. First operand has 287 places, 256 transitions, 3080 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:07:57,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 277 transitions, 3714 flow [2024-06-04 14:07:57,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 277 transitions, 3531 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:57,902 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 2989 flow [2024-06-04 14:07:57,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2989, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2024-06-04 14:07:57,902 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-04 14:07:57,902 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 2989 flow [2024-06-04 14:07:57,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:57,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:57,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:57,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:07:57,903 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:57,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1888056125, now seen corresponding path program 11 times [2024-06-04 14:07:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281977254] [2024-06-04 14:07:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:58,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:58,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281977254] [2024-06-04 14:07:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281977254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:58,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:58,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315491868] [2024-06-04 14:07:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:58,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:58,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:58,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:58,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 2989 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:58,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:58,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:58,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:59,311 INFO L124 PetriNetUnfolderBase]: 721/1278 cut-off events. [2024-06-04 14:07:59,311 INFO L125 PetriNetUnfolderBase]: For 91708/91708 co-relation queries the response was YES. [2024-06-04 14:07:59,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9119 conditions, 1278 events. 721/1278 cut-off events. For 91708/91708 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6672 event pairs, 151 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 8986. Up to 1119 conditions per place. [2024-06-04 14:07:59,321 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 225 selfloop transitions, 46 changer transitions 0/273 dead transitions. [2024-06-04 14:07:59,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 273 transitions, 3607 flow [2024-06-04 14:07:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:07:59,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:59,321 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 2989 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:07:59,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 273 transitions, 3607 flow [2024-06-04 14:07:59,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 273 transitions, 3525 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 14:07:59,638 INFO L231 Difference]: Finished difference. Result has 290 places, 258 transitions, 3048 flow [2024-06-04 14:07:59,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3048, PETRI_PLACES=290, PETRI_TRANSITIONS=258} [2024-06-04 14:07:59,639 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-04 14:07:59,639 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 258 transitions, 3048 flow [2024-06-04 14:07:59,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:59,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:59,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:59,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:07:59,639 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:59,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:59,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1002076483, now seen corresponding path program 12 times [2024-06-04 14:07:59,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:59,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115701238] [2024-06-04 14:07:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:59,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:00,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115701238] [2024-06-04 14:08:00,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115701238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:00,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:00,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:00,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597632789] [2024-06-04 14:08:00,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:00,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:00,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:00,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:00,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:00,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 258 transitions, 3048 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:00,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:00,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:00,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:01,100 INFO L124 PetriNetUnfolderBase]: 731/1296 cut-off events. [2024-06-04 14:08:01,100 INFO L125 PetriNetUnfolderBase]: For 94522/94522 co-relation queries the response was YES. [2024-06-04 14:08:01,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9339 conditions, 1296 events. 731/1296 cut-off events. For 94522/94522 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6789 event pairs, 124 based on Foata normal form. 2/1298 useless extension candidates. Maximal degree in co-relation 9205. Up to 1122 conditions per place. [2024-06-04 14:08:01,142 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 222 selfloop transitions, 52 changer transitions 0/276 dead transitions. [2024-06-04 14:08:01,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 276 transitions, 3723 flow [2024-06-04 14:08:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:08:01,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-04 14:08:01,143 INFO L175 Difference]: Start difference. First operand has 290 places, 258 transitions, 3048 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:08:01,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 276 transitions, 3723 flow [2024-06-04 14:08:01,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 276 transitions, 3598 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:01,489 INFO L231 Difference]: Finished difference. Result has 292 places, 263 transitions, 3132 flow [2024-06-04 14:08:01,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3132, PETRI_PLACES=292, PETRI_TRANSITIONS=263} [2024-06-04 14:08:01,489 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 260 predicate places. [2024-06-04 14:08:01,490 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 263 transitions, 3132 flow [2024-06-04 14:08:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:01,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:01,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:01,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:08:01,490 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:01,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash -682121469, now seen corresponding path program 13 times [2024-06-04 14:08:01,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:01,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279718144] [2024-06-04 14:08:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:01,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279718144] [2024-06-04 14:08:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279718144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914519476] [2024-06-04 14:08:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:02,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:02,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 263 transitions, 3132 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:02,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:02,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:02,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:02,834 INFO L124 PetriNetUnfolderBase]: 735/1304 cut-off events. [2024-06-04 14:08:02,834 INFO L125 PetriNetUnfolderBase]: For 92300/92300 co-relation queries the response was YES. [2024-06-04 14:08:02,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9357 conditions, 1304 events. 735/1304 cut-off events. For 92300/92300 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6838 event pairs, 107 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 9222. Up to 1069 conditions per place. [2024-06-04 14:08:02,847 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 233 selfloop transitions, 46 changer transitions 0/281 dead transitions. [2024-06-04 14:08:02,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 281 transitions, 3768 flow [2024-06-04 14:08:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:08:02,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:08:02,848 INFO L175 Difference]: Start difference. First operand has 292 places, 263 transitions, 3132 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:08:02,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 281 transitions, 3768 flow [2024-06-04 14:08:03,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 281 transitions, 3661 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 14:08:03,246 INFO L231 Difference]: Finished difference. Result has 297 places, 264 transitions, 3165 flow [2024-06-04 14:08:03,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3165, PETRI_PLACES=297, PETRI_TRANSITIONS=264} [2024-06-04 14:08:03,246 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-04 14:08:03,246 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 264 transitions, 3165 flow [2024-06-04 14:08:03,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:03,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:03,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:08:03,246 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:03,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash -593401887, now seen corresponding path program 7 times [2024-06-04 14:08:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252516888] [2024-06-04 14:08:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:03,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:04,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:04,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252516888] [2024-06-04 14:08:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252516888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820058647] [2024-06-04 14:08:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:04,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:04,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 264 transitions, 3165 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:04,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:04,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:04,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:05,488 INFO L124 PetriNetUnfolderBase]: 741/1314 cut-off events. [2024-06-04 14:08:05,488 INFO L125 PetriNetUnfolderBase]: For 89404/89404 co-relation queries the response was YES. [2024-06-04 14:08:05,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 1314 events. 741/1314 cut-off events. For 89404/89404 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6895 event pairs, 153 based on Foata normal form. 2/1316 useless extension candidates. Maximal degree in co-relation 9293. Up to 1149 conditions per place. [2024-06-04 14:08:05,500 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 46 changer transitions 0/283 dead transitions. [2024-06-04 14:08:05,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 283 transitions, 3843 flow [2024-06-04 14:08:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:08:05,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:08:05,501 INFO L175 Difference]: Start difference. First operand has 297 places, 264 transitions, 3165 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:08:05,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 283 transitions, 3843 flow [2024-06-04 14:08:05,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 283 transitions, 3723 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:05,803 INFO L231 Difference]: Finished difference. Result has 299 places, 266 transitions, 3220 flow [2024-06-04 14:08:05,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3220, PETRI_PLACES=299, PETRI_TRANSITIONS=266} [2024-06-04 14:08:05,804 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-04 14:08:05,804 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 266 transitions, 3220 flow [2024-06-04 14:08:05,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:05,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:05,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:05,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:08:05,804 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:05,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -593551834, now seen corresponding path program 3 times [2024-06-04 14:08:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:05,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379330387] [2024-06-04 14:08:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:06,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:06,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379330387] [2024-06-04 14:08:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379330387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:06,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:06,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118282248] [2024-06-04 14:08:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:06,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:06,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 266 transitions, 3220 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:07,355 INFO L124 PetriNetUnfolderBase]: 739/1311 cut-off events. [2024-06-04 14:08:07,356 INFO L125 PetriNetUnfolderBase]: For 79027/79027 co-relation queries the response was YES. [2024-06-04 14:08:07,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 1311 events. 739/1311 cut-off events. For 79027/79027 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6911 event pairs, 151 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 9117. Up to 1143 conditions per place. [2024-06-04 14:08:07,369 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 224 selfloop transitions, 55 changer transitions 0/281 dead transitions. [2024-06-04 14:08:07,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 281 transitions, 3820 flow [2024-06-04 14:08:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:08:07,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:08:07,370 INFO L175 Difference]: Start difference. First operand has 299 places, 266 transitions, 3220 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:08:07,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 281 transitions, 3820 flow [2024-06-04 14:08:07,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 281 transitions, 3671 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:07,700 INFO L231 Difference]: Finished difference. Result has 300 places, 266 transitions, 3201 flow [2024-06-04 14:08:07,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3201, PETRI_PLACES=300, PETRI_TRANSITIONS=266} [2024-06-04 14:08:07,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-04 14:08:07,701 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 266 transitions, 3201 flow [2024-06-04 14:08:07,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:07,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:07,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:07,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:08:07,701 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:07,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash 290220627, now seen corresponding path program 14 times [2024-06-04 14:08:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427692427] [2024-06-04 14:08:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:08,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427692427] [2024-06-04 14:08:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427692427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:08,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717338182] [2024-06-04 14:08:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:08,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:08,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:08,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:08,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:08,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 266 transitions, 3201 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:08,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:08,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:08,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:09,099 INFO L124 PetriNetUnfolderBase]: 743/1319 cut-off events. [2024-06-04 14:08:09,099 INFO L125 PetriNetUnfolderBase]: For 83594/83594 co-relation queries the response was YES. [2024-06-04 14:08:09,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 1319 events. 743/1319 cut-off events. For 83594/83594 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6937 event pairs, 95 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 9179. Up to 1069 conditions per place. [2024-06-04 14:08:09,112 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 208 selfloop transitions, 73 changer transitions 0/283 dead transitions. [2024-06-04 14:08:09,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 283 transitions, 3839 flow [2024-06-04 14:08:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:08:09,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-04 14:08:09,113 INFO L175 Difference]: Start difference. First operand has 300 places, 266 transitions, 3201 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:08:09,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 283 transitions, 3839 flow [2024-06-04 14:08:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 283 transitions, 3673 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 14:08:09,452 INFO L231 Difference]: Finished difference. Result has 299 places, 267 transitions, 3217 flow [2024-06-04 14:08:09,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3217, PETRI_PLACES=299, PETRI_TRANSITIONS=267} [2024-06-04 14:08:09,453 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-04 14:08:09,453 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 267 transitions, 3217 flow [2024-06-04 14:08:09,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:09,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:09,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:09,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:08:09,453 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:09,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash 290436108, now seen corresponding path program 2 times [2024-06-04 14:08:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:09,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131671147] [2024-06-04 14:08:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:09,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:11,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131671147] [2024-06-04 14:08:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131671147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:11,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:11,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243049120] [2024-06-04 14:08:11,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:11,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:11,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:11,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:11,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:11,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 267 transitions, 3217 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:11,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:11,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:11,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:11,756 INFO L124 PetriNetUnfolderBase]: 746/1324 cut-off events. [2024-06-04 14:08:11,756 INFO L125 PetriNetUnfolderBase]: For 79733/79733 co-relation queries the response was YES. [2024-06-04 14:08:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9350 conditions, 1324 events. 746/1324 cut-off events. For 79733/79733 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7013 event pairs, 183 based on Foata normal form. 1/1325 useless extension candidates. Maximal degree in co-relation 9213. Up to 1169 conditions per place. [2024-06-04 14:08:11,798 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 224 selfloop transitions, 58 changer transitions 0/284 dead transitions. [2024-06-04 14:08:11,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 284 transitions, 3883 flow [2024-06-04 14:08:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:08:11,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:08:11,799 INFO L175 Difference]: Start difference. First operand has 299 places, 267 transitions, 3217 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:08:11,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 284 transitions, 3883 flow [2024-06-04 14:08:12,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 284 transitions, 3713 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:12,082 INFO L231 Difference]: Finished difference. Result has 302 places, 269 transitions, 3233 flow [2024-06-04 14:08:12,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3233, PETRI_PLACES=302, PETRI_TRANSITIONS=269} [2024-06-04 14:08:12,083 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-04 14:08:12,083 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 269 transitions, 3233 flow [2024-06-04 14:08:12,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:12,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:12,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:08:12,083 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:12,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1332927041, now seen corresponding path program 15 times [2024-06-04 14:08:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409223533] [2024-06-04 14:08:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409223533] [2024-06-04 14:08:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409223533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:12,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:12,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:12,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094249819] [2024-06-04 14:08:12,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:12,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:13,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:13,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 269 transitions, 3233 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:13,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:13,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:13,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:13,481 INFO L124 PetriNetUnfolderBase]: 750/1332 cut-off events. [2024-06-04 14:08:13,481 INFO L125 PetriNetUnfolderBase]: For 82227/82227 co-relation queries the response was YES. [2024-06-04 14:08:13,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9340 conditions, 1332 events. 750/1332 cut-off events. For 82227/82227 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7029 event pairs, 119 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 9202. Up to 1153 conditions per place. [2024-06-04 14:08:13,494 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 229 selfloop transitions, 53 changer transitions 0/284 dead transitions. [2024-06-04 14:08:13,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 284 transitions, 3863 flow [2024-06-04 14:08:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:08:13,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:08:13,495 INFO L175 Difference]: Start difference. First operand has 302 places, 269 transitions, 3233 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:08:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 284 transitions, 3863 flow [2024-06-04 14:08:13,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 284 transitions, 3711 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:13,781 INFO L231 Difference]: Finished difference. Result has 302 places, 270 transitions, 3223 flow [2024-06-04 14:08:13,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3223, PETRI_PLACES=302, PETRI_TRANSITIONS=270} [2024-06-04 14:08:13,782 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-04 14:08:13,782 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 270 transitions, 3223 flow [2024-06-04 14:08:13,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:13,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:13,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:13,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:08:13,782 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:13,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1308778723, now seen corresponding path program 8 times [2024-06-04 14:08:13,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:13,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40122808] [2024-06-04 14:08:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:13,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:15,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40122808] [2024-06-04 14:08:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40122808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:15,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358685432] [2024-06-04 14:08:15,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:15,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:15,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:15,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 270 transitions, 3223 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:15,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:15,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:15,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:15,819 INFO L124 PetriNetUnfolderBase]: 776/1374 cut-off events. [2024-06-04 14:08:15,819 INFO L125 PetriNetUnfolderBase]: For 93136/93136 co-relation queries the response was YES. [2024-06-04 14:08:15,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 1374 events. 776/1374 cut-off events. For 93136/93136 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7244 event pairs, 96 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 9925. Up to 913 conditions per place. [2024-06-04 14:08:15,831 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 115 changer transitions 0/297 dead transitions. [2024-06-04 14:08:15,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 297 transitions, 4391 flow [2024-06-04 14:08:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:08:15,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:08:15,833 INFO L175 Difference]: Start difference. First operand has 302 places, 270 transitions, 3223 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:08:15,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 297 transitions, 4391 flow [2024-06-04 14:08:16,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 297 transitions, 4257 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:16,152 INFO L231 Difference]: Finished difference. Result has 305 places, 276 transitions, 3551 flow [2024-06-04 14:08:16,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3551, PETRI_PLACES=305, PETRI_TRANSITIONS=276} [2024-06-04 14:08:16,153 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2024-06-04 14:08:16,153 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 276 transitions, 3551 flow [2024-06-04 14:08:16,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:16,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:16,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:16,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:08:16,153 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:16,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 290435829, now seen corresponding path program 9 times [2024-06-04 14:08:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334624101] [2024-06-04 14:08:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:16,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:17,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334624101] [2024-06-04 14:08:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334624101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:17,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:17,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916215636] [2024-06-04 14:08:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:17,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:17,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 276 transitions, 3551 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:17,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:17,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:17,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:18,047 INFO L124 PetriNetUnfolderBase]: 772/1368 cut-off events. [2024-06-04 14:08:18,047 INFO L125 PetriNetUnfolderBase]: For 88049/88049 co-relation queries the response was YES. [2024-06-04 14:08:18,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10008 conditions, 1368 events. 772/1368 cut-off events. For 88049/88049 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7215 event pairs, 95 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 9869. Up to 910 conditions per place. [2024-06-04 14:08:18,061 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 125 changer transitions 0/297 dead transitions. [2024-06-04 14:08:18,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 297 transitions, 4359 flow [2024-06-04 14:08:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:08:18,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:08:18,062 INFO L175 Difference]: Start difference. First operand has 305 places, 276 transitions, 3551 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:08:18,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 297 transitions, 4359 flow [2024-06-04 14:08:18,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 297 transitions, 4122 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:18,386 INFO L231 Difference]: Finished difference. Result has 309 places, 276 transitions, 3576 flow [2024-06-04 14:08:18,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3576, PETRI_PLACES=309, PETRI_TRANSITIONS=276} [2024-06-04 14:08:18,387 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-04 14:08:18,387 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 276 transitions, 3576 flow [2024-06-04 14:08:18,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:18,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:18,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:18,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:08:18,387 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:18,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash 284710377, now seen corresponding path program 16 times [2024-06-04 14:08:18,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:18,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182650931] [2024-06-04 14:08:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:18,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:19,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:19,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182650931] [2024-06-04 14:08:19,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182650931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:19,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:19,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:19,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155266711] [2024-06-04 14:08:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:19,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:19,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 276 transitions, 3576 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:19,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:19,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:19,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:19,792 INFO L124 PetriNetUnfolderBase]: 780/1384 cut-off events. [2024-06-04 14:08:19,792 INFO L125 PetriNetUnfolderBase]: For 86592/86592 co-relation queries the response was YES. [2024-06-04 14:08:19,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1384 events. 780/1384 cut-off events. For 86592/86592 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7357 event pairs, 117 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 10025. Up to 1205 conditions per place. [2024-06-04 14:08:19,805 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 239 selfloop transitions, 51 changer transitions 0/292 dead transitions. [2024-06-04 14:08:19,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 4225 flow [2024-06-04 14:08:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:08:19,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-04 14:08:19,806 INFO L175 Difference]: Start difference. First operand has 309 places, 276 transitions, 3576 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:08:19,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 4225 flow [2024-06-04 14:08:20,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 292 transitions, 3999 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:20,166 INFO L231 Difference]: Finished difference. Result has 310 places, 278 transitions, 3499 flow [2024-06-04 14:08:20,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3499, PETRI_PLACES=310, PETRI_TRANSITIONS=278} [2024-06-04 14:08:20,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-04 14:08:20,167 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 278 transitions, 3499 flow [2024-06-04 14:08:20,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:20,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:20,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:20,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:08:20,167 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:20,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1314342913, now seen corresponding path program 10 times [2024-06-04 14:08:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539636472] [2024-06-04 14:08:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539636472] [2024-06-04 14:08:21,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539636472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:21,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:21,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150635303] [2024-06-04 14:08:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:21,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:21,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:21,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 278 transitions, 3499 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:21,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:21,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:21,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:22,384 INFO L124 PetriNetUnfolderBase]: 786/1394 cut-off events. [2024-06-04 14:08:22,384 INFO L125 PetriNetUnfolderBase]: For 87188/87188 co-relation queries the response was YES. [2024-06-04 14:08:22,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 1394 events. 786/1394 cut-off events. For 87188/87188 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7447 event pairs, 121 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 9991. Up to 1195 conditions per place. [2024-06-04 14:08:22,399 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 235 selfloop transitions, 59 changer transitions 0/296 dead transitions. [2024-06-04 14:08:22,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 296 transitions, 4201 flow [2024-06-04 14:08:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:08:22,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:08:22,401 INFO L175 Difference]: Start difference. First operand has 310 places, 278 transitions, 3499 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:08:22,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 296 transitions, 4201 flow [2024-06-04 14:08:22,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 296 transitions, 4077 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:22,740 INFO L231 Difference]: Finished difference. Result has 314 places, 280 transitions, 3573 flow [2024-06-04 14:08:22,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3573, PETRI_PLACES=314, PETRI_TRANSITIONS=280} [2024-06-04 14:08:22,740 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-04 14:08:22,741 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 280 transitions, 3573 flow [2024-06-04 14:08:22,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:22,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:22,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:22,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:08:22,741 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:22,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1308980533, now seen corresponding path program 11 times [2024-06-04 14:08:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:22,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133728650] [2024-06-04 14:08:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:22,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:24,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:24,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133728650] [2024-06-04 14:08:24,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133728650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:24,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:24,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:24,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427374503] [2024-06-04 14:08:24,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:24,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:24,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:24,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 280 transitions, 3573 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:24,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:24,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:24,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:24,701 INFO L124 PetriNetUnfolderBase]: 787/1396 cut-off events. [2024-06-04 14:08:24,702 INFO L125 PetriNetUnfolderBase]: For 84754/84754 co-relation queries the response was YES. [2024-06-04 14:08:24,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10107 conditions, 1396 events. 787/1396 cut-off events. For 84754/84754 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7441 event pairs, 99 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 9965. Up to 1126 conditions per place. [2024-06-04 14:08:24,715 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 219 selfloop transitions, 79 changer transitions 0/300 dead transitions. [2024-06-04 14:08:24,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 300 transitions, 4297 flow [2024-06-04 14:08:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:08:24,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:08:24,716 INFO L175 Difference]: Start difference. First operand has 314 places, 280 transitions, 3573 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:08:24,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 300 transitions, 4297 flow [2024-06-04 14:08:25,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 300 transitions, 4135 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:25,081 INFO L231 Difference]: Finished difference. Result has 316 places, 282 transitions, 3653 flow [2024-06-04 14:08:25,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3653, PETRI_PLACES=316, PETRI_TRANSITIONS=282} [2024-06-04 14:08:25,081 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-04 14:08:25,081 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 282 transitions, 3653 flow [2024-06-04 14:08:25,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:25,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:25,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:25,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:08:25,082 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:25,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1331640327, now seen corresponding path program 2 times [2024-06-04 14:08:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:25,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509653379] [2024-06-04 14:08:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:25,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:26,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:26,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509653379] [2024-06-04 14:08:26,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509653379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:26,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:26,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:26,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534864091] [2024-06-04 14:08:26,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:26,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:26,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:26,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:26,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:26,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:26,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 282 transitions, 3653 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:26,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:26,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:26,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:27,305 INFO L124 PetriNetUnfolderBase]: 795/1412 cut-off events. [2024-06-04 14:08:27,305 INFO L125 PetriNetUnfolderBase]: For 92347/92347 co-relation queries the response was YES. [2024-06-04 14:08:27,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10217 conditions, 1412 events. 795/1412 cut-off events. For 92347/92347 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7636 event pairs, 176 based on Foata normal form. 4/1416 useless extension candidates. Maximal degree in co-relation 10074. Up to 1253 conditions per place. [2024-06-04 14:08:27,319 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 252 selfloop transitions, 47 changer transitions 0/301 dead transitions. [2024-06-04 14:08:27,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 301 transitions, 4331 flow [2024-06-04 14:08:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:08:27,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:08:27,320 INFO L175 Difference]: Start difference. First operand has 316 places, 282 transitions, 3653 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:08:27,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 301 transitions, 4331 flow [2024-06-04 14:08:27,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 301 transitions, 4125 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:27,650 INFO L231 Difference]: Finished difference. Result has 319 places, 283 transitions, 3569 flow [2024-06-04 14:08:27,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3569, PETRI_PLACES=319, PETRI_TRANSITIONS=283} [2024-06-04 14:08:27,650 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:08:27,651 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 283 transitions, 3569 flow [2024-06-04 14:08:27,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:27,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:27,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:27,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:08:27,651 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:27,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:27,651 INFO L85 PathProgramCache]: Analyzing trace with hash -755879267, now seen corresponding path program 17 times [2024-06-04 14:08:27,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:27,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423000001] [2024-06-04 14:08:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:27,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:28,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:28,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423000001] [2024-06-04 14:08:28,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423000001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:28,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:28,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:28,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394903768] [2024-06-04 14:08:28,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:28,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:28,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:28,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 283 transitions, 3569 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:28,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:28,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:28,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:29,113 INFO L124 PetriNetUnfolderBase]: 799/1422 cut-off events. [2024-06-04 14:08:29,114 INFO L125 PetriNetUnfolderBase]: For 88444/88444 co-relation queries the response was YES. [2024-06-04 14:08:29,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10172 conditions, 1422 events. 799/1422 cut-off events. For 88444/88444 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7651 event pairs, 135 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 10028. Up to 1251 conditions per place. [2024-06-04 14:08:29,128 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 247 selfloop transitions, 48 changer transitions 0/297 dead transitions. [2024-06-04 14:08:29,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 297 transitions, 4225 flow [2024-06-04 14:08:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:08:29,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:08:29,129 INFO L175 Difference]: Start difference. First operand has 319 places, 283 transitions, 3569 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:08:29,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 297 transitions, 4225 flow [2024-06-04 14:08:29,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 297 transitions, 4115 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:29,488 INFO L231 Difference]: Finished difference. Result has 319 places, 284 transitions, 3589 flow [2024-06-04 14:08:29,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3589, PETRI_PLACES=319, PETRI_TRANSITIONS=284} [2024-06-04 14:08:29,489 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:08:29,489 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 284 transitions, 3589 flow [2024-06-04 14:08:29,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:29,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:29,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:29,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:08:29,490 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:29,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash 957490045, now seen corresponding path program 12 times [2024-06-04 14:08:29,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:29,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849430177] [2024-06-04 14:08:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:29,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849430177] [2024-06-04 14:08:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849430177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:31,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670846831] [2024-06-04 14:08:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:31,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:31,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 284 transitions, 3589 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:31,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:31,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:31,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:31,703 INFO L124 PetriNetUnfolderBase]: 815/1446 cut-off events. [2024-06-04 14:08:31,703 INFO L125 PetriNetUnfolderBase]: For 95452/95452 co-relation queries the response was YES. [2024-06-04 14:08:31,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10602 conditions, 1446 events. 815/1446 cut-off events. For 95452/95452 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7796 event pairs, 93 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 10457. Up to 1113 conditions per place. [2024-06-04 14:08:31,718 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 218 selfloop transitions, 89 changer transitions 0/309 dead transitions. [2024-06-04 14:08:31,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 309 transitions, 4573 flow [2024-06-04 14:08:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:08:31,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:08:31,719 INFO L175 Difference]: Start difference. First operand has 319 places, 284 transitions, 3589 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:08:31,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 309 transitions, 4573 flow [2024-06-04 14:08:32,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 309 transitions, 4453 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:32,147 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 3800 flow [2024-06-04 14:08:32,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3800, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2024-06-04 14:08:32,148 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-04 14:08:32,148 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 3800 flow [2024-06-04 14:08:32,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:32,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:32,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:32,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:08:32,149 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:32,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash -559586319, now seen corresponding path program 13 times [2024-06-04 14:08:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:32,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055216027] [2024-06-04 14:08:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:33,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055216027] [2024-06-04 14:08:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055216027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125035173] [2024-06-04 14:08:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:33,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:33,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 3800 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:33,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:33,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:33,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:34,270 INFO L124 PetriNetUnfolderBase]: 837/1482 cut-off events. [2024-06-04 14:08:34,270 INFO L125 PetriNetUnfolderBase]: For 105656/105656 co-relation queries the response was YES. [2024-06-04 14:08:34,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11233 conditions, 1482 events. 837/1482 cut-off events. For 105656/105656 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7989 event pairs, 136 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 11087. Up to 1268 conditions per place. [2024-06-04 14:08:34,285 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 254 selfloop transitions, 57 changer transitions 0/313 dead transitions. [2024-06-04 14:08:34,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 313 transitions, 4802 flow [2024-06-04 14:08:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:08:34,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:08:34,288 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 3800 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:08:34,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 313 transitions, 4802 flow [2024-06-04 14:08:34,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 313 transitions, 4607 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:34,690 INFO L231 Difference]: Finished difference. Result has 327 places, 294 transitions, 3901 flow [2024-06-04 14:08:34,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3901, PETRI_PLACES=327, PETRI_TRANSITIONS=294} [2024-06-04 14:08:34,691 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-04 14:08:34,691 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 294 transitions, 3901 flow [2024-06-04 14:08:34,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:34,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:34,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:34,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:08:34,692 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:34,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash -397064675, now seen corresponding path program 14 times [2024-06-04 14:08:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:34,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170821988] [2024-06-04 14:08:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:34,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:35,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170821988] [2024-06-04 14:08:35,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170821988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:35,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:35,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:35,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073002126] [2024-06-04 14:08:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:35,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:35,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:35,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:35,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 294 transitions, 3901 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:35,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:35,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:36,417 INFO L124 PetriNetUnfolderBase]: 859/1518 cut-off events. [2024-06-04 14:08:36,417 INFO L125 PetriNetUnfolderBase]: For 121650/121650 co-relation queries the response was YES. [2024-06-04 14:08:36,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11752 conditions, 1518 events. 859/1518 cut-off events. For 121650/121650 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8213 event pairs, 291 based on Foata normal form. 4/1522 useless extension candidates. Maximal degree in co-relation 11603. Up to 1443 conditions per place. [2024-06-04 14:08:36,434 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 288 selfloop transitions, 24 changer transitions 0/314 dead transitions. [2024-06-04 14:08:36,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 314 transitions, 4867 flow [2024-06-04 14:08:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 14:08:36,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-04 14:08:36,435 INFO L175 Difference]: Start difference. First operand has 327 places, 294 transitions, 3901 flow. Second operand 11 states and 114 transitions. [2024-06-04 14:08:36,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 314 transitions, 4867 flow [2024-06-04 14:08:36,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 314 transitions, 4719 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-04 14:08:36,838 INFO L231 Difference]: Finished difference. Result has 333 places, 299 transitions, 3955 flow [2024-06-04 14:08:36,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3955, PETRI_PLACES=333, PETRI_TRANSITIONS=299} [2024-06-04 14:08:36,839 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-04 14:08:36,839 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 299 transitions, 3955 flow [2024-06-04 14:08:36,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:36,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:36,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:36,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:08:36,839 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:36,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1228698893, now seen corresponding path program 18 times [2024-06-04 14:08:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:36,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466107460] [2024-06-04 14:08:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466107460] [2024-06-04 14:08:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466107460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:37,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:37,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007567065] [2024-06-04 14:08:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:37,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:37,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:37,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 299 transitions, 3955 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:37,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:37,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:37,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:38,189 INFO L124 PetriNetUnfolderBase]: 863/1526 cut-off events. [2024-06-04 14:08:38,189 INFO L125 PetriNetUnfolderBase]: For 117333/117333 co-relation queries the response was YES. [2024-06-04 14:08:38,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11808 conditions, 1526 events. 863/1526 cut-off events. For 117333/117333 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8270 event pairs, 100 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 11657. Up to 1238 conditions per place. [2024-06-04 14:08:38,205 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 233 selfloop transitions, 80 changer transitions 0/315 dead transitions. [2024-06-04 14:08:38,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 315 transitions, 4659 flow [2024-06-04 14:08:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:08:38,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:08:38,205 INFO L175 Difference]: Start difference. First operand has 333 places, 299 transitions, 3955 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:08:38,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 315 transitions, 4659 flow [2024-06-04 14:08:38,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 315 transitions, 4538 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:38,628 INFO L231 Difference]: Finished difference. Result has 335 places, 300 transitions, 4030 flow [2024-06-04 14:08:38,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4030, PETRI_PLACES=335, PETRI_TRANSITIONS=300} [2024-06-04 14:08:38,628 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-04 14:08:38,628 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 300 transitions, 4030 flow [2024-06-04 14:08:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:38,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:38,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:08:38,629 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:38,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1382621927, now seen corresponding path program 15 times [2024-06-04 14:08:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:38,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919362516] [2024-06-04 14:08:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:39,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919362516] [2024-06-04 14:08:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919362516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:39,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:39,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:39,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246936845] [2024-06-04 14:08:39,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:39,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:39,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:39,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:39,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 300 transitions, 4030 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:39,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:39,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:39,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:40,523 INFO L124 PetriNetUnfolderBase]: 869/1536 cut-off events. [2024-06-04 14:08:40,523 INFO L125 PetriNetUnfolderBase]: For 119040/119040 co-relation queries the response was YES. [2024-06-04 14:08:40,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 1536 events. 869/1536 cut-off events. For 119040/119040 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8334 event pairs, 135 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 11817. Up to 1318 conditions per place. [2024-06-04 14:08:40,540 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 260 selfloop transitions, 58 changer transitions 0/320 dead transitions. [2024-06-04 14:08:40,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 320 transitions, 4946 flow [2024-06-04 14:08:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:08:40,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:08:40,541 INFO L175 Difference]: Start difference. First operand has 335 places, 300 transitions, 4030 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:08:40,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 320 transitions, 4946 flow [2024-06-04 14:08:40,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 320 transitions, 4760 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:40,998 INFO L231 Difference]: Finished difference. Result has 338 places, 302 transitions, 4027 flow [2024-06-04 14:08:40,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3844, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4027, PETRI_PLACES=338, PETRI_TRANSITIONS=302} [2024-06-04 14:08:40,998 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 306 predicate places. [2024-06-04 14:08:40,999 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 302 transitions, 4027 flow [2024-06-04 14:08:40,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:40,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:40,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:40,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:08:40,999 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:40,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1228491131, now seen corresponding path program 16 times [2024-06-04 14:08:41,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:41,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828460612] [2024-06-04 14:08:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:42,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828460612] [2024-06-04 14:08:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828460612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571760395] [2024-06-04 14:08:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:42,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:42,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:42,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 302 transitions, 4027 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:42,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:42,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:42,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:43,226 INFO L124 PetriNetUnfolderBase]: 875/1546 cut-off events. [2024-06-04 14:08:43,226 INFO L125 PetriNetUnfolderBase]: For 121795/121795 co-relation queries the response was YES. [2024-06-04 14:08:43,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12005 conditions, 1546 events. 875/1546 cut-off events. For 121795/121795 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8403 event pairs, 95 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 11851. Up to 1209 conditions per place. [2024-06-04 14:08:43,239 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 232 selfloop transitions, 90 changer transitions 0/324 dead transitions. [2024-06-04 14:08:43,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 324 transitions, 4963 flow [2024-06-04 14:08:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:08:43,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:08:43,240 INFO L175 Difference]: Start difference. First operand has 338 places, 302 transitions, 4027 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:08:43,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 324 transitions, 4963 flow [2024-06-04 14:08:43,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 324 transitions, 4810 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:43,696 INFO L231 Difference]: Finished difference. Result has 342 places, 304 transitions, 4121 flow [2024-06-04 14:08:43,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4121, PETRI_PLACES=342, PETRI_TRANSITIONS=304} [2024-06-04 14:08:43,696 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 310 predicate places. [2024-06-04 14:08:43,696 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 304 transitions, 4121 flow [2024-06-04 14:08:43,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:43,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:43,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:43,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:08:43,697 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:43,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1382420117, now seen corresponding path program 17 times [2024-06-04 14:08:43,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:43,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288846239] [2024-06-04 14:08:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:45,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:45,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288846239] [2024-06-04 14:08:45,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288846239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:45,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:45,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966815888] [2024-06-04 14:08:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:45,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:45,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:45,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 304 transitions, 4121 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:45,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:45,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:45,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:45,848 INFO L124 PetriNetUnfolderBase]: 871/1540 cut-off events. [2024-06-04 14:08:45,848 INFO L125 PetriNetUnfolderBase]: For 117703/117703 co-relation queries the response was YES. [2024-06-04 14:08:45,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 1540 events. 871/1540 cut-off events. For 117703/117703 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8384 event pairs, 145 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 11696. Up to 1361 conditions per place. [2024-06-04 14:08:45,864 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 266 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2024-06-04 14:08:45,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 319 transitions, 4801 flow [2024-06-04 14:08:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:08:45,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:08:45,865 INFO L175 Difference]: Start difference. First operand has 342 places, 304 transitions, 4121 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:08:45,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 319 transitions, 4801 flow [2024-06-04 14:08:46,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 319 transitions, 4526 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:46,383 INFO L231 Difference]: Finished difference. Result has 345 places, 304 transitions, 3953 flow [2024-06-04 14:08:46,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3846, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3953, PETRI_PLACES=345, PETRI_TRANSITIONS=304} [2024-06-04 14:08:46,383 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2024-06-04 14:08:46,383 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 304 transitions, 3953 flow [2024-06-04 14:08:46,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:46,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:46,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:46,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:08:46,383 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:46,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:46,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1390048597, now seen corresponding path program 3 times [2024-06-04 14:08:46,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:46,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860597154] [2024-06-04 14:08:46,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:46,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:48,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860597154] [2024-06-04 14:08:48,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860597154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:48,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:48,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:48,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451675216] [2024-06-04 14:08:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:48,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:48,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:48,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:48,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:48,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 304 transitions, 3953 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:48,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:48,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:48,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:48,650 INFO L124 PetriNetUnfolderBase]: 879/1556 cut-off events. [2024-06-04 14:08:48,650 INFO L125 PetriNetUnfolderBase]: For 126312/126312 co-relation queries the response was YES. [2024-06-04 14:08:48,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11708 conditions, 1556 events. 879/1556 cut-off events. For 126312/126312 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8564 event pairs, 200 based on Foata normal form. 4/1560 useless extension candidates. Maximal degree in co-relation 11552. Up to 1443 conditions per place. [2024-06-04 14:08:48,668 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 284 selfloop transitions, 35 changer transitions 0/321 dead transitions. [2024-06-04 14:08:48,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 321 transitions, 4665 flow [2024-06-04 14:08:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 14:08:48,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-04 14:08:48,669 INFO L175 Difference]: Start difference. First operand has 345 places, 304 transitions, 3953 flow. Second operand 11 states and 114 transitions. [2024-06-04 14:08:48,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 321 transitions, 4665 flow [2024-06-04 14:08:49,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 321 transitions, 4547 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:08:49,183 INFO L231 Difference]: Finished difference. Result has 346 places, 305 transitions, 3931 flow [2024-06-04 14:08:49,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3931, PETRI_PLACES=346, PETRI_TRANSITIONS=305} [2024-06-04 14:08:49,184 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-06-04 14:08:49,184 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 305 transitions, 3931 flow [2024-06-04 14:08:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:49,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:49,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:49,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:08:49,184 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:49,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1188474755, now seen corresponding path program 19 times [2024-06-04 14:08:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678185424] [2024-06-04 14:08:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:50,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:50,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678185424] [2024-06-04 14:08:50,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678185424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:50,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:50,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:50,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780499715] [2024-06-04 14:08:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:50,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:50,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:50,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:50,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 305 transitions, 3931 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:50,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:50,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:50,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:50,752 INFO L124 PetriNetUnfolderBase]: 883/1564 cut-off events. [2024-06-04 14:08:50,752 INFO L125 PetriNetUnfolderBase]: For 122581/122581 co-relation queries the response was YES. [2024-06-04 14:08:50,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11757 conditions, 1564 events. 883/1564 cut-off events. For 122581/122581 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8548 event pairs, 147 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 11600. Up to 1372 conditions per place. [2024-06-04 14:08:50,768 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 265 selfloop transitions, 54 changer transitions 0/321 dead transitions. [2024-06-04 14:08:50,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 321 transitions, 4647 flow [2024-06-04 14:08:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:08:50,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-04 14:08:50,769 INFO L175 Difference]: Start difference. First operand has 346 places, 305 transitions, 3931 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:08:50,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 321 transitions, 4647 flow [2024-06-04 14:08:51,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 321 transitions, 4561 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:51,365 INFO L231 Difference]: Finished difference. Result has 346 places, 306 transitions, 3993 flow [2024-06-04 14:08:51,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3993, PETRI_PLACES=346, PETRI_TRANSITIONS=306} [2024-06-04 14:08:51,366 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-06-04 14:08:51,366 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 306 transitions, 3993 flow [2024-06-04 14:08:51,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:51,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:51,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:51,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:08:51,366 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:51,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1228692941, now seen corresponding path program 18 times [2024-06-04 14:08:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:51,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493762457] [2024-06-04 14:08:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:51,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:52,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493762457] [2024-06-04 14:08:52,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493762457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:52,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:52,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:52,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840092545] [2024-06-04 14:08:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:52,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:52,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:52,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:52,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:52,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:52,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 306 transitions, 3993 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:52,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:52,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:52,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:53,447 INFO L124 PetriNetUnfolderBase]: 879/1558 cut-off events. [2024-06-04 14:08:53,448 INFO L125 PetriNetUnfolderBase]: For 118198/118198 co-relation queries the response was YES. [2024-06-04 14:08:53,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 1558 events. 879/1558 cut-off events. For 118198/118198 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8529 event pairs, 98 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 11446. Up to 1260 conditions per place. [2024-06-04 14:08:53,465 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 238 selfloop transitions, 83 changer transitions 0/323 dead transitions. [2024-06-04 14:08:53,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 323 transitions, 4691 flow [2024-06-04 14:08:53,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:53,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:08:53,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:08:53,466 INFO L175 Difference]: Start difference. First operand has 346 places, 306 transitions, 3993 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:08:53,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 323 transitions, 4691 flow [2024-06-04 14:08:53,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 323 transitions, 4503 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:53,995 INFO L231 Difference]: Finished difference. Result has 349 places, 306 transitions, 3976 flow [2024-06-04 14:08:53,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3976, PETRI_PLACES=349, PETRI_TRANSITIONS=306} [2024-06-04 14:08:53,995 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 317 predicate places. [2024-06-04 14:08:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 306 transitions, 3976 flow [2024-06-04 14:08:53,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:53,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:53,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:08:53,996 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:53,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1221064461, now seen corresponding path program 4 times [2024-06-04 14:08:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082146822] [2024-06-04 14:08:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:53,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082146822] [2024-06-04 14:08:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082146822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:55,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:55,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:55,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641248088] [2024-06-04 14:08:55,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:55,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:55,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:55,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 306 transitions, 3976 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:55,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:55,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:55,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:56,019 INFO L124 PetriNetUnfolderBase]: 887/1574 cut-off events. [2024-06-04 14:08:56,019 INFO L125 PetriNetUnfolderBase]: For 124792/124792 co-relation queries the response was YES. [2024-06-04 14:08:56,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11637 conditions, 1574 events. 887/1574 cut-off events. For 124792/124792 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8703 event pairs, 173 based on Foata normal form. 4/1578 useless extension candidates. Maximal degree in co-relation 11478. Up to 1427 conditions per place. [2024-06-04 14:08:56,035 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 275 selfloop transitions, 47 changer transitions 0/324 dead transitions. [2024-06-04 14:08:56,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 324 transitions, 4702 flow [2024-06-04 14:08:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:08:56,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:08:56,036 INFO L175 Difference]: Start difference. First operand has 349 places, 306 transitions, 3976 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:08:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 324 transitions, 4702 flow [2024-06-04 14:08:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 324 transitions, 4520 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:08:56,571 INFO L231 Difference]: Finished difference. Result has 350 places, 307 transitions, 3916 flow [2024-06-04 14:08:56,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3916, PETRI_PLACES=350, PETRI_TRANSITIONS=307} [2024-06-04 14:08:56,571 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-04 14:08:56,571 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 307 transitions, 3916 flow [2024-06-04 14:08:56,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:56,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:56,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:56,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:08:56,572 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:56,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:56,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1445117323, now seen corresponding path program 20 times [2024-06-04 14:08:56,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:56,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067318596] [2024-06-04 14:08:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:56,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:57,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:57,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067318596] [2024-06-04 14:08:57,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067318596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:57,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:57,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:57,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733618681] [2024-06-04 14:08:57,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:57,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:57,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:57,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:57,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:57,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 307 transitions, 3916 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:57,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:57,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:57,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:57,932 INFO L124 PetriNetUnfolderBase]: 891/1582 cut-off events. [2024-06-04 14:08:57,933 INFO L125 PetriNetUnfolderBase]: For 120333/120333 co-relation queries the response was YES. [2024-06-04 14:08:57,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11624 conditions, 1582 events. 891/1582 cut-off events. For 120333/120333 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8696 event pairs, 160 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 11464. Up to 1417 conditions per place. [2024-06-04 14:08:57,951 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 273 selfloop transitions, 46 changer transitions 0/321 dead transitions. [2024-06-04 14:08:57,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 321 transitions, 4622 flow [2024-06-04 14:08:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:08:57,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:08:57,952 INFO L175 Difference]: Start difference. First operand has 350 places, 307 transitions, 3916 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:08:57,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 321 transitions, 4622 flow [2024-06-04 14:08:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 321 transitions, 4510 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:58,528 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 3934 flow [2024-06-04 14:08:58,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3934, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2024-06-04 14:08:58,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-04 14:08:58,529 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 3934 flow [2024-06-04 14:08:58,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:58,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:58,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:58,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:08:58,529 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:58,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash -647776013, now seen corresponding path program 5 times [2024-06-04 14:08:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:58,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663155739] [2024-06-04 14:08:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:58,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:59,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:59,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663155739] [2024-06-04 14:08:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663155739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091463518] [2024-06-04 14:08:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:59,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:59,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:59,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 3934 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:59,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:59,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:59,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:00,076 INFO L124 PetriNetUnfolderBase]: 913/1624 cut-off events. [2024-06-04 14:09:00,076 INFO L125 PetriNetUnfolderBase]: For 145941/145941 co-relation queries the response was YES. [2024-06-04 14:09:00,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 1624 events. 913/1624 cut-off events. For 145941/145941 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9044 event pairs, 309 based on Foata normal form. 4/1628 useless extension candidates. Maximal degree in co-relation 12034. Up to 1524 conditions per place. [2024-06-04 14:09:00,091 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 303 selfloop transitions, 21 changer transitions 0/326 dead transitions. [2024-06-04 14:09:00,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 326 transitions, 4850 flow [2024-06-04 14:09:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 14:09:00,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-04 14:09:00,091 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 3934 flow. Second operand 11 states and 111 transitions. [2024-06-04 14:09:00,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 326 transitions, 4850 flow [2024-06-04 14:09:00,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 326 transitions, 4730 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:00,694 INFO L231 Difference]: Finished difference. Result has 354 places, 310 transitions, 3910 flow [2024-06-04 14:09:00,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3910, PETRI_PLACES=354, PETRI_TRANSITIONS=310} [2024-06-04 14:09:00,694 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 322 predicate places. [2024-06-04 14:09:00,694 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 310 transitions, 3910 flow [2024-06-04 14:09:00,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:00,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:00,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:00,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:09:00,695 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:00,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1818203761, now seen corresponding path program 21 times [2024-06-04 14:09:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:00,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002309646] [2024-06-04 14:09:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002309646] [2024-06-04 14:09:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002309646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:01,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:01,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961690743] [2024-06-04 14:09:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:01,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:01,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:01,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 310 transitions, 3910 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:01,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:01,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:01,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:02,270 INFO L124 PetriNetUnfolderBase]: 910/1621 cut-off events. [2024-06-04 14:09:02,270 INFO L125 PetriNetUnfolderBase]: For 133240/133240 co-relation queries the response was YES. [2024-06-04 14:09:02,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11905 conditions, 1621 events. 910/1621 cut-off events. For 133240/133240 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9015 event pairs, 167 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 11743. Up to 1454 conditions per place. [2024-06-04 14:09:02,288 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 276 selfloop transitions, 45 changer transitions 0/323 dead transitions. [2024-06-04 14:09:02,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 323 transitions, 4586 flow [2024-06-04 14:09:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:09:02,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:09:02,289 INFO L175 Difference]: Start difference. First operand has 354 places, 310 transitions, 3910 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:09:02,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 323 transitions, 4586 flow [2024-06-04 14:09:02,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 323 transitions, 4531 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:02,907 INFO L231 Difference]: Finished difference. Result has 356 places, 310 transitions, 3949 flow [2024-06-04 14:09:02,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3949, PETRI_PLACES=356, PETRI_TRANSITIONS=310} [2024-06-04 14:09:02,908 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 324 predicate places. [2024-06-04 14:09:02,908 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 310 transitions, 3949 flow [2024-06-04 14:09:02,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:02,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:02,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:02,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:09:02,908 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:02,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:02,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1812478309, now seen corresponding path program 19 times [2024-06-04 14:09:02,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:02,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165970334] [2024-06-04 14:09:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:02,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:04,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:04,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165970334] [2024-06-04 14:09:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165970334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:04,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221516338] [2024-06-04 14:09:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:04,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:04,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:04,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:04,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 310 transitions, 3949 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:04,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:04,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:04,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:05,600 INFO L124 PetriNetUnfolderBase]: 926/1645 cut-off events. [2024-06-04 14:09:05,600 INFO L125 PetriNetUnfolderBase]: For 145940/145940 co-relation queries the response was YES. [2024-06-04 14:09:05,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12491 conditions, 1645 events. 926/1645 cut-off events. For 145940/145940 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9149 event pairs, 155 based on Foata normal form. 2/1647 useless extension candidates. Maximal degree in co-relation 12327. Up to 1360 conditions per place. [2024-06-04 14:09:05,619 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 256 selfloop transitions, 76 changer transitions 0/334 dead transitions. [2024-06-04 14:09:05,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 334 transitions, 5027 flow [2024-06-04 14:09:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:09:05,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:09:05,620 INFO L175 Difference]: Start difference. First operand has 356 places, 310 transitions, 3949 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:09:05,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 334 transitions, 5027 flow [2024-06-04 14:09:06,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 334 transitions, 4826 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:06,255 INFO L231 Difference]: Finished difference. Result has 357 places, 314 transitions, 4080 flow [2024-06-04 14:09:06,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4080, PETRI_PLACES=357, PETRI_TRANSITIONS=314} [2024-06-04 14:09:06,256 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 325 predicate places. [2024-06-04 14:09:06,256 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 314 transitions, 4080 flow [2024-06-04 14:09:06,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:06,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:06,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:06,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:09:06,256 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:06,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash -648161963, now seen corresponding path program 6 times [2024-06-04 14:09:06,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:06,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636427649] [2024-06-04 14:09:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:06,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636427649] [2024-06-04 14:09:07,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636427649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:07,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:07,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213861040] [2024-06-04 14:09:07,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:07,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:07,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:07,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:07,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 314 transitions, 4080 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:07,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:07,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:07,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:07,816 INFO L124 PetriNetUnfolderBase]: 934/1661 cut-off events. [2024-06-04 14:09:07,817 INFO L125 PetriNetUnfolderBase]: For 157454/157454 co-relation queries the response was YES. [2024-06-04 14:09:07,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12561 conditions, 1661 events. 934/1661 cut-off events. For 157454/157454 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9323 event pairs, 315 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 12397. Up to 1595 conditions per place. [2024-06-04 14:09:07,836 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 306 selfloop transitions, 20 changer transitions 0/328 dead transitions. [2024-06-04 14:09:07,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 328 transitions, 4790 flow [2024-06-04 14:09:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 14:09:07,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-04 14:09:07,837 INFO L175 Difference]: Start difference. First operand has 357 places, 314 transitions, 4080 flow. Second operand 10 states and 103 transitions. [2024-06-04 14:09:07,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 328 transitions, 4790 flow [2024-06-04 14:09:08,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 328 transitions, 4525 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:08,479 INFO L231 Difference]: Finished difference. Result has 358 places, 315 transitions, 3879 flow [2024-06-04 14:09:08,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3879, PETRI_PLACES=358, PETRI_TRANSITIONS=315} [2024-06-04 14:09:08,479 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 326 predicate places. [2024-06-04 14:09:08,479 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 315 transitions, 3879 flow [2024-06-04 14:09:08,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:08,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:08,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:08,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:09:08,479 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:08,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:08,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1188690236, now seen corresponding path program 3 times [2024-06-04 14:09:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:08,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188026841] [2024-06-04 14:09:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188026841] [2024-06-04 14:09:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188026841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:10,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:10,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706376623] [2024-06-04 14:09:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:10,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:10,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:10,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 315 transitions, 3879 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:10,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:10,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:10,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:11,757 INFO L124 PetriNetUnfolderBase]: 932/1660 cut-off events. [2024-06-04 14:09:11,758 INFO L125 PetriNetUnfolderBase]: For 138652/138652 co-relation queries the response was YES. [2024-06-04 14:09:11,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12067 conditions, 1660 events. 932/1660 cut-off events. For 138652/138652 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9348 event pairs, 223 based on Foata normal form. 1/1661 useless extension candidates. Maximal degree in co-relation 11904. Up to 1549 conditions per place. [2024-06-04 14:09:11,778 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 285 selfloop transitions, 41 changer transitions 0/328 dead transitions. [2024-06-04 14:09:11,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 328 transitions, 4575 flow [2024-06-04 14:09:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:09:11,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:09:11,779 INFO L175 Difference]: Start difference. First operand has 358 places, 315 transitions, 3879 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:09:11,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 328 transitions, 4575 flow [2024-06-04 14:09:12,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 328 transitions, 4523 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:12,443 INFO L231 Difference]: Finished difference. Result has 360 places, 315 transitions, 3917 flow [2024-06-04 14:09:12,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3917, PETRI_PLACES=360, PETRI_TRANSITIONS=315} [2024-06-04 14:09:12,444 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 328 predicate places. [2024-06-04 14:09:12,444 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 315 transitions, 3917 flow [2024-06-04 14:09:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:12,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:12,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:12,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:09:12,444 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:12,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:12,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1396494109, now seen corresponding path program 20 times [2024-06-04 14:09:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:12,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495946622] [2024-06-04 14:09:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:12,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495946622] [2024-06-04 14:09:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495946622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:13,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:13,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390607836] [2024-06-04 14:09:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:14,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:14,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 315 transitions, 3917 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:14,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:14,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:14,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:14,737 INFO L124 PetriNetUnfolderBase]: 938/1668 cut-off events. [2024-06-04 14:09:14,737 INFO L125 PetriNetUnfolderBase]: For 146205/146205 co-relation queries the response was YES. [2024-06-04 14:09:14,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12243 conditions, 1668 events. 938/1668 cut-off events. For 146205/146205 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9358 event pairs, 159 based on Foata normal form. 2/1670 useless extension candidates. Maximal degree in co-relation 12079. Up to 1379 conditions per place. [2024-06-04 14:09:14,755 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 259 selfloop transitions, 75 changer transitions 0/336 dead transitions. [2024-06-04 14:09:14,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 336 transitions, 4897 flow [2024-06-04 14:09:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:09:14,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:09:14,756 INFO L175 Difference]: Start difference. First operand has 360 places, 315 transitions, 3917 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:09:14,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 336 transitions, 4897 flow [2024-06-04 14:09:15,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 336 transitions, 4702 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-04 14:09:15,439 INFO L231 Difference]: Finished difference. Result has 359 places, 317 transitions, 3950 flow [2024-06-04 14:09:15,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3950, PETRI_PLACES=359, PETRI_TRANSITIONS=317} [2024-06-04 14:09:15,439 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 327 predicate places. [2024-06-04 14:09:15,440 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 317 transitions, 3950 flow [2024-06-04 14:09:15,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:15,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:15,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:15,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:09:15,440 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:15,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash -659203853, now seen corresponding path program 7 times [2024-06-04 14:09:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425432745] [2024-06-04 14:09:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:16,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425432745] [2024-06-04 14:09:16,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425432745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:16,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:16,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:16,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432824273] [2024-06-04 14:09:16,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:16,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:16,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:16,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 317 transitions, 3950 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:16,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:16,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:16,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:17,402 INFO L124 PetriNetUnfolderBase]: 932/1658 cut-off events. [2024-06-04 14:09:17,402 INFO L125 PetriNetUnfolderBase]: For 138021/138021 co-relation queries the response was YES. [2024-06-04 14:09:17,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 1658 events. 932/1658 cut-off events. For 138021/138021 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9315 event pairs, 311 based on Foata normal form. 4/1662 useless extension candidates. Maximal degree in co-relation 11678. Up to 1576 conditions per place. [2024-06-04 14:09:17,421 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 308 selfloop transitions, 21 changer transitions 0/331 dead transitions. [2024-06-04 14:09:17,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 331 transitions, 4650 flow [2024-06-04 14:09:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 14:09:17,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:09:17,422 INFO L175 Difference]: Start difference. First operand has 359 places, 317 transitions, 3950 flow. Second operand 11 states and 110 transitions. [2024-06-04 14:09:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 331 transitions, 4650 flow [2024-06-04 14:09:17,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 331 transitions, 4449 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:17,997 INFO L231 Difference]: Finished difference. Result has 362 places, 317 transitions, 3797 flow [2024-06-04 14:09:17,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3797, PETRI_PLACES=362, PETRI_TRANSITIONS=317} [2024-06-04 14:09:17,997 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-04 14:09:17,997 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 317 transitions, 3797 flow [2024-06-04 14:09:17,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:17,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:17,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:17,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:09:17,997 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:17,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash -753734979, now seen corresponding path program 21 times [2024-06-04 14:09:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:17,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570576085] [2024-06-04 14:09:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570576085] [2024-06-04 14:09:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570576085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:19,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:19,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146116307] [2024-06-04 14:09:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:19,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:19,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 317 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:19,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:19,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:19,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:20,546 INFO L124 PetriNetUnfolderBase]: 938/1670 cut-off events. [2024-06-04 14:09:20,546 INFO L125 PetriNetUnfolderBase]: For 129260/129260 co-relation queries the response was YES. [2024-06-04 14:09:20,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11732 conditions, 1670 events. 938/1670 cut-off events. For 129260/129260 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9364 event pairs, 163 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 11569. Up to 1456 conditions per place. [2024-06-04 14:09:20,561 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 274 selfloop transitions, 60 changer transitions 0/336 dead transitions. [2024-06-04 14:09:20,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 336 transitions, 4589 flow [2024-06-04 14:09:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:09:20,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:09:20,561 INFO L175 Difference]: Start difference. First operand has 362 places, 317 transitions, 3797 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:09:20,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 336 transitions, 4589 flow [2024-06-04 14:09:21,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 336 transitions, 4543 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:21,190 INFO L231 Difference]: Finished difference. Result has 362 places, 319 transitions, 3953 flow [2024-06-04 14:09:21,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3751, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3953, PETRI_PLACES=362, PETRI_TRANSITIONS=319} [2024-06-04 14:09:21,190 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-04 14:09:21,190 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 319 transitions, 3953 flow [2024-06-04 14:09:21,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:21,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:21,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:09:21,191 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:21,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:21,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1445267425, now seen corresponding path program 22 times [2024-06-04 14:09:21,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:21,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715339717] [2024-06-04 14:09:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:22,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:22,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715339717] [2024-06-04 14:09:22,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715339717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:22,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:22,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:22,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598865885] [2024-06-04 14:09:22,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:22,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:22,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:22,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:22,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 319 transitions, 3953 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:22,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:22,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:22,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:23,318 INFO L124 PetriNetUnfolderBase]: 944/1678 cut-off events. [2024-06-04 14:09:23,318 INFO L125 PetriNetUnfolderBase]: For 127485/127485 co-relation queries the response was YES. [2024-06-04 14:09:23,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 1678 events. 944/1678 cut-off events. For 127485/127485 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9433 event pairs, 170 based on Foata normal form. 2/1680 useless extension candidates. Maximal degree in co-relation 11749. Up to 1492 conditions per place. [2024-06-04 14:09:23,336 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 282 selfloop transitions, 55 changer transitions 0/339 dead transitions. [2024-06-04 14:09:23,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 339 transitions, 4924 flow [2024-06-04 14:09:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:09:23,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:09:23,337 INFO L175 Difference]: Start difference. First operand has 362 places, 319 transitions, 3953 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:09:23,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 339 transitions, 4924 flow [2024-06-04 14:09:24,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 339 transitions, 4693 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:24,088 INFO L231 Difference]: Finished difference. Result has 365 places, 321 transitions, 3905 flow [2024-06-04 14:09:24,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3905, PETRI_PLACES=365, PETRI_TRANSITIONS=321} [2024-06-04 14:09:24,089 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 333 predicate places. [2024-06-04 14:09:24,089 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 321 transitions, 3905 flow [2024-06-04 14:09:24,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:24,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:24,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:24,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:09:24,089 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:24,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:24,089 INFO L85 PathProgramCache]: Analyzing trace with hash -973172473, now seen corresponding path program 23 times [2024-06-04 14:09:24,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:24,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923079927] [2024-06-04 14:09:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923079927] [2024-06-04 14:09:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923079927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:25,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:25,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167508627] [2024-06-04 14:09:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:25,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:25,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:25,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 321 transitions, 3905 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:25,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:25,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:25,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:26,035 INFO L124 PetriNetUnfolderBase]: 950/1688 cut-off events. [2024-06-04 14:09:26,035 INFO L125 PetriNetUnfolderBase]: For 129362/129362 co-relation queries the response was YES. [2024-06-04 14:09:26,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 1688 events. 950/1688 cut-off events. For 129362/129362 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9493 event pairs, 96 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 11750. Up to 751 conditions per place. [2024-06-04 14:09:26,053 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 195 selfloop transitions, 152 changer transitions 0/349 dead transitions. [2024-06-04 14:09:26,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 349 transitions, 5267 flow [2024-06-04 14:09:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:26,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 14:09:26,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-04 14:09:26,054 INFO L175 Difference]: Start difference. First operand has 365 places, 321 transitions, 3905 flow. Second operand 10 states and 126 transitions. [2024-06-04 14:09:26,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 349 transitions, 5267 flow [2024-06-04 14:09:26,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 349 transitions, 5112 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:26,615 INFO L231 Difference]: Finished difference. Result has 367 places, 327 transitions, 4381 flow [2024-06-04 14:09:26,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4381, PETRI_PLACES=367, PETRI_TRANSITIONS=327} [2024-06-04 14:09:26,616 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-04 14:09:26,616 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 327 transitions, 4381 flow [2024-06-04 14:09:26,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:26,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:26,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:26,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:09:26,616 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:26,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1214259945, now seen corresponding path program 8 times [2024-06-04 14:09:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:26,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736696559] [2024-06-04 14:09:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:27,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736696559] [2024-06-04 14:09:27,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736696559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:27,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:27,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987244787] [2024-06-04 14:09:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:27,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:27,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:27,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:27,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 327 transitions, 4381 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:27,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:27,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:27,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:28,276 INFO L124 PetriNetUnfolderBase]: 951/1691 cut-off events. [2024-06-04 14:09:28,277 INFO L125 PetriNetUnfolderBase]: For 133723/133723 co-relation queries the response was YES. [2024-06-04 14:09:28,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12171 conditions, 1691 events. 951/1691 cut-off events. For 133723/133723 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9560 event pairs, 174 based on Foata normal form. 4/1695 useless extension candidates. Maximal degree in co-relation 12004. Up to 1394 conditions per place. [2024-06-04 14:09:28,295 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 260 selfloop transitions, 83 changer transitions 0/345 dead transitions. [2024-06-04 14:09:28,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 345 transitions, 5151 flow [2024-06-04 14:09:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:09:28,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:09:28,296 INFO L175 Difference]: Start difference. First operand has 367 places, 327 transitions, 4381 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:09:28,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 345 transitions, 5151 flow [2024-06-04 14:09:28,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 345 transitions, 4918 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-04 14:09:28,929 INFO L231 Difference]: Finished difference. Result has 373 places, 328 transitions, 4344 flow [2024-06-04 14:09:28,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4148, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4344, PETRI_PLACES=373, PETRI_TRANSITIONS=328} [2024-06-04 14:09:28,930 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 341 predicate places. [2024-06-04 14:09:28,930 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 328 transitions, 4344 flow [2024-06-04 14:09:28,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:28,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:28,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:28,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:09:28,930 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:28,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -973179913, now seen corresponding path program 24 times [2024-06-04 14:09:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170328050] [2024-06-04 14:09:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170328050] [2024-06-04 14:09:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170328050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:29,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281776281] [2024-06-04 14:09:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:30,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:30,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 328 transitions, 4344 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:30,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:30,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:30,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:30,732 INFO L124 PetriNetUnfolderBase]: 957/1701 cut-off events. [2024-06-04 14:09:30,732 INFO L125 PetriNetUnfolderBase]: For 126099/126099 co-relation queries the response was YES. [2024-06-04 14:09:30,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12222 conditions, 1701 events. 957/1701 cut-off events. For 126099/126099 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9581 event pairs, 316 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 12053. Up to 1567 conditions per place. [2024-06-04 14:09:30,750 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 311 selfloop transitions, 32 changer transitions 0/345 dead transitions. [2024-06-04 14:09:30,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 345 transitions, 5326 flow [2024-06-04 14:09:30,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:09:30,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:09:30,751 INFO L175 Difference]: Start difference. First operand has 373 places, 328 transitions, 4344 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:09:30,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 345 transitions, 5326 flow [2024-06-04 14:09:31,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 345 transitions, 5086 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:31,280 INFO L231 Difference]: Finished difference. Result has 375 places, 330 transitions, 4257 flow [2024-06-04 14:09:31,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4257, PETRI_PLACES=375, PETRI_TRANSITIONS=330} [2024-06-04 14:09:31,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2024-06-04 14:09:31,280 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 330 transitions, 4257 flow [2024-06-04 14:09:31,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:31,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:31,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:31,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:09:31,281 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:31,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:31,281 INFO L85 PathProgramCache]: Analyzing trace with hash -727141679, now seen corresponding path program 1 times [2024-06-04 14:09:31,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:31,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969432305] [2024-06-04 14:09:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:31,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:32,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:32,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969432305] [2024-06-04 14:09:32,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969432305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:32,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:32,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:32,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123638653] [2024-06-04 14:09:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:32,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:32,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:32,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:32,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 330 transitions, 4257 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:32,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:33,034 INFO L124 PetriNetUnfolderBase]: 961/1709 cut-off events. [2024-06-04 14:09:33,034 INFO L125 PetriNetUnfolderBase]: For 129202/129202 co-relation queries the response was YES. [2024-06-04 14:09:33,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12142 conditions, 1709 events. 961/1709 cut-off events. For 129202/129202 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9634 event pairs, 192 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 11971. Up to 1565 conditions per place. [2024-06-04 14:09:33,052 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 37 changer transitions 0/355 dead transitions. [2024-06-04 14:09:33,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 355 transitions, 5051 flow [2024-06-04 14:09:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:09:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:09:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-04 14:09:33,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3146853146853147 [2024-06-04 14:09:33,054 INFO L175 Difference]: Start difference. First operand has 375 places, 330 transitions, 4257 flow. Second operand 13 states and 135 transitions. [2024-06-04 14:09:33,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 355 transitions, 5051 flow [2024-06-04 14:09:33,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 355 transitions, 4982 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:33,630 INFO L231 Difference]: Finished difference. Result has 380 places, 331 transitions, 4294 flow [2024-06-04 14:09:33,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4294, PETRI_PLACES=380, PETRI_TRANSITIONS=331} [2024-06-04 14:09:33,631 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 348 predicate places. [2024-06-04 14:09:33,631 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 331 transitions, 4294 flow [2024-06-04 14:09:33,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:33,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:33,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:33,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:09:33,631 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:33,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:33,631 INFO L85 PathProgramCache]: Analyzing trace with hash -703080909, now seen corresponding path program 2 times [2024-06-04 14:09:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:33,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854803688] [2024-06-04 14:09:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:33,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:34,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:34,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854803688] [2024-06-04 14:09:34,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854803688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:34,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:34,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:34,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717314590] [2024-06-04 14:09:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:34,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:34,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:34,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:34,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 331 transitions, 4294 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:34,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:34,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:34,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:35,536 INFO L124 PetriNetUnfolderBase]: 965/1717 cut-off events. [2024-06-04 14:09:35,536 INFO L125 PetriNetUnfolderBase]: For 130742/130742 co-relation queries the response was YES. [2024-06-04 14:09:35,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1717 events. 965/1717 cut-off events. For 130742/130742 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9682 event pairs, 207 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 12063. Up to 1585 conditions per place. [2024-06-04 14:09:35,557 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 310 selfloop transitions, 41 changer transitions 0/353 dead transitions. [2024-06-04 14:09:35,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 353 transitions, 5082 flow [2024-06-04 14:09:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:09:35,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-04 14:09:35,558 INFO L175 Difference]: Start difference. First operand has 380 places, 331 transitions, 4294 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:09:35,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 353 transitions, 5082 flow [2024-06-04 14:09:36,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 353 transitions, 4986 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-04 14:09:36,151 INFO L231 Difference]: Finished difference. Result has 381 places, 332 transitions, 4315 flow [2024-06-04 14:09:36,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4198, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4315, PETRI_PLACES=381, PETRI_TRANSITIONS=332} [2024-06-04 14:09:36,151 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-04 14:09:36,151 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 332 transitions, 4315 flow [2024-06-04 14:09:36,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:36,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:36,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:36,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:09:36,151 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:36,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash -702364809, now seen corresponding path program 3 times [2024-06-04 14:09:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623267788] [2024-06-04 14:09:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:37,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623267788] [2024-06-04 14:09:37,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623267788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:37,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:37,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:37,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109450346] [2024-06-04 14:09:37,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:37,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:37,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:37,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:37,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 332 transitions, 4315 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:37,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:37,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:37,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:37,938 INFO L124 PetriNetUnfolderBase]: 969/1725 cut-off events. [2024-06-04 14:09:37,938 INFO L125 PetriNetUnfolderBase]: For 134693/134693 co-relation queries the response was YES. [2024-06-04 14:09:37,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12304 conditions, 1725 events. 969/1725 cut-off events. For 134693/134693 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9735 event pairs, 211 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 12131. Up to 1596 conditions per place. [2024-06-04 14:09:37,957 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 314 selfloop transitions, 38 changer transitions 0/354 dead transitions. [2024-06-04 14:09:37,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 354 transitions, 5105 flow [2024-06-04 14:09:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 14:09:37,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 14:09:37,958 INFO L175 Difference]: Start difference. First operand has 381 places, 332 transitions, 4315 flow. Second operand 12 states and 126 transitions. [2024-06-04 14:09:37,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 354 transitions, 5105 flow [2024-06-04 14:09:38,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 354 transitions, 5000 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:38,581 INFO L231 Difference]: Finished difference. Result has 383 places, 333 transitions, 4322 flow [2024-06-04 14:09:38,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4322, PETRI_PLACES=383, PETRI_TRANSITIONS=333} [2024-06-04 14:09:38,582 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-04 14:09:38,582 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 333 transitions, 4322 flow [2024-06-04 14:09:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:38,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:38,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:38,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:09:38,582 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:38,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:38,582 INFO L85 PathProgramCache]: Analyzing trace with hash -706775799, now seen corresponding path program 4 times [2024-06-04 14:09:38,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:38,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464768615] [2024-06-04 14:09:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:39,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464768615] [2024-06-04 14:09:39,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464768615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:39,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:39,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913159704] [2024-06-04 14:09:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:39,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:39,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:39,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:39,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:39,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 333 transitions, 4322 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:39,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:39,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:39,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:40,462 INFO L124 PetriNetUnfolderBase]: 973/1733 cut-off events. [2024-06-04 14:09:40,462 INFO L125 PetriNetUnfolderBase]: For 137465/137465 co-relation queries the response was YES. [2024-06-04 14:09:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12363 conditions, 1733 events. 973/1733 cut-off events. For 137465/137465 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9805 event pairs, 215 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 12189. Up to 1607 conditions per place. [2024-06-04 14:09:40,481 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 35 changer transitions 0/355 dead transitions. [2024-06-04 14:09:40,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 5114 flow [2024-06-04 14:09:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:09:40,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-04 14:09:40,482 INFO L175 Difference]: Start difference. First operand has 383 places, 333 transitions, 4322 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:09:40,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 5114 flow [2024-06-04 14:09:41,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 355 transitions, 5012 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:41,058 INFO L231 Difference]: Finished difference. Result has 385 places, 334 transitions, 4328 flow [2024-06-04 14:09:41,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4328, PETRI_PLACES=385, PETRI_TRANSITIONS=334} [2024-06-04 14:09:41,058 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 353 predicate places. [2024-06-04 14:09:41,059 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 334 transitions, 4328 flow [2024-06-04 14:09:41,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:41,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:41,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:41,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:09:41,059 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:41,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:41,059 INFO L85 PathProgramCache]: Analyzing trace with hash -602229369, now seen corresponding path program 5 times [2024-06-04 14:09:41,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:41,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059137239] [2024-06-04 14:09:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059137239] [2024-06-04 14:09:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059137239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:42,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386610328] [2024-06-04 14:09:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:42,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:42,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:42,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 334 transitions, 4328 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:42,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:42,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:42,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:42,807 INFO L124 PetriNetUnfolderBase]: 977/1741 cut-off events. [2024-06-04 14:09:42,807 INFO L125 PetriNetUnfolderBase]: For 140179/140179 co-relation queries the response was YES. [2024-06-04 14:09:42,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 1741 events. 977/1741 cut-off events. For 140179/140179 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9881 event pairs, 175 based on Foata normal form. 2/1743 useless extension candidates. Maximal degree in co-relation 12247. Up to 1522 conditions per place. [2024-06-04 14:09:42,824 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 42 changer transitions 0/357 dead transitions. [2024-06-04 14:09:42,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 357 transitions, 5126 flow [2024-06-04 14:09:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-04 14:09:42,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-04 14:09:42,826 INFO L175 Difference]: Start difference. First operand has 385 places, 334 transitions, 4328 flow. Second operand 12 states and 123 transitions. [2024-06-04 14:09:42,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 357 transitions, 5126 flow [2024-06-04 14:09:43,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 357 transitions, 5028 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:43,425 INFO L231 Difference]: Finished difference. Result has 387 places, 335 transitions, 4354 flow [2024-06-04 14:09:43,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4354, PETRI_PLACES=387, PETRI_TRANSITIONS=335} [2024-06-04 14:09:43,425 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 355 predicate places. [2024-06-04 14:09:43,425 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 335 transitions, 4354 flow [2024-06-04 14:09:43,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:43,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:43,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:43,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:09:43,426 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:43,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 140731243, now seen corresponding path program 1 times [2024-06-04 14:09:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360711137] [2024-06-04 14:09:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:43,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:44,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360711137] [2024-06-04 14:09:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360711137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:44,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873256752] [2024-06-04 14:09:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:44,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:44,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:44,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 335 transitions, 4354 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:44,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:44,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:44,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:45,557 INFO L124 PetriNetUnfolderBase]: 980/1746 cut-off events. [2024-06-04 14:09:45,557 INFO L125 PetriNetUnfolderBase]: For 138456/138456 co-relation queries the response was YES. [2024-06-04 14:09:45,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 1746 events. 980/1746 cut-off events. For 138456/138456 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9925 event pairs, 214 based on Foata normal form. 1/1747 useless extension candidates. Maximal degree in co-relation 12327. Up to 1617 conditions per place. [2024-06-04 14:09:45,578 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 314 selfloop transitions, 42 changer transitions 0/358 dead transitions. [2024-06-04 14:09:45,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 358 transitions, 5195 flow [2024-06-04 14:09:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 14:09:45,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:09:45,579 INFO L175 Difference]: Start difference. First operand has 387 places, 335 transitions, 4354 flow. Second operand 12 states and 128 transitions. [2024-06-04 14:09:45,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 358 transitions, 5195 flow [2024-06-04 14:09:46,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 358 transitions, 5081 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:46,216 INFO L231 Difference]: Finished difference. Result has 389 places, 337 transitions, 4405 flow [2024-06-04 14:09:46,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4405, PETRI_PLACES=389, PETRI_TRANSITIONS=337} [2024-06-04 14:09:46,216 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-04 14:09:46,216 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 337 transitions, 4405 flow [2024-06-04 14:09:46,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:46,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:46,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:46,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:09:46,217 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:46,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2030089007, now seen corresponding path program 1 times [2024-06-04 14:09:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:46,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381748569] [2024-06-04 14:09:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:46,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:48,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:48,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381748569] [2024-06-04 14:09:48,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381748569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:48,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:48,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727341840] [2024-06-04 14:09:48,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:48,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:48,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:48,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:48,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 337 transitions, 4405 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:48,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:48,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:48,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:49,213 INFO L124 PetriNetUnfolderBase]: 986/1756 cut-off events. [2024-06-04 14:09:49,213 INFO L125 PetriNetUnfolderBase]: For 144452/144452 co-relation queries the response was YES. [2024-06-04 14:09:49,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12576 conditions, 1756 events. 986/1756 cut-off events. For 144452/144452 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9974 event pairs, 214 based on Foata normal form. 2/1758 useless extension candidates. Maximal degree in co-relation 12399. Up to 1631 conditions per place. [2024-06-04 14:09:49,232 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 323 selfloop transitions, 37 changer transitions 0/362 dead transitions. [2024-06-04 14:09:49,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 5259 flow [2024-06-04 14:09:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:09:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:09:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-04 14:09:49,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-04 14:09:49,233 INFO L175 Difference]: Start difference. First operand has 389 places, 337 transitions, 4405 flow. Second operand 13 states and 137 transitions. [2024-06-04 14:09:49,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 5259 flow [2024-06-04 14:09:49,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 362 transitions, 5135 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:49,922 INFO L231 Difference]: Finished difference. Result has 392 places, 339 transitions, 4432 flow [2024-06-04 14:09:49,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4432, PETRI_PLACES=392, PETRI_TRANSITIONS=339} [2024-06-04 14:09:49,924 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 360 predicate places. [2024-06-04 14:09:49,924 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 339 transitions, 4432 flow [2024-06-04 14:09:49,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:49,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:49,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:49,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:09:49,925 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:49,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash 235561245, now seen corresponding path program 6 times [2024-06-04 14:09:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:49,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569970355] [2024-06-04 14:09:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:49,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:50,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569970355] [2024-06-04 14:09:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569970355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:50,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093413964] [2024-06-04 14:09:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:50,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:50,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:50,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:51,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:51,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 339 transitions, 4432 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:51,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:51,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:51,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:51,768 INFO L124 PetriNetUnfolderBase]: 990/1764 cut-off events. [2024-06-04 14:09:51,769 INFO L125 PetriNetUnfolderBase]: For 148695/148695 co-relation queries the response was YES. [2024-06-04 14:09:51,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 1764 events. 990/1764 cut-off events. For 148695/148695 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10040 event pairs, 186 based on Foata normal form. 2/1766 useless extension candidates. Maximal degree in co-relation 12476. Up to 1650 conditions per place. [2024-06-04 14:09:51,786 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 325 selfloop transitions, 33 changer transitions 0/360 dead transitions. [2024-06-04 14:09:51,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 360 transitions, 5242 flow [2024-06-04 14:09:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:09:51,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:09:51,787 INFO L175 Difference]: Start difference. First operand has 392 places, 339 transitions, 4432 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:09:51,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 360 transitions, 5242 flow [2024-06-04 14:09:52,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 360 transitions, 5113 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-04 14:09:52,519 INFO L231 Difference]: Finished difference. Result has 392 places, 340 transitions, 4412 flow [2024-06-04 14:09:52,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4412, PETRI_PLACES=392, PETRI_TRANSITIONS=340} [2024-06-04 14:09:52,520 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 360 predicate places. [2024-06-04 14:09:52,520 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 340 transitions, 4412 flow [2024-06-04 14:09:52,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:52,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:52,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:52,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:09:52,520 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:52,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1482787111, now seen corresponding path program 7 times [2024-06-04 14:09:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:52,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132785066] [2024-06-04 14:09:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:52,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:53,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:53,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132785066] [2024-06-04 14:09:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132785066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:53,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:53,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15402997] [2024-06-04 14:09:53,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:53,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:53,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:53,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:53,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 340 transitions, 4412 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:53,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:53,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:53,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:54,347 INFO L124 PetriNetUnfolderBase]: 994/1772 cut-off events. [2024-06-04 14:09:54,347 INFO L125 PetriNetUnfolderBase]: For 151974/151974 co-relation queries the response was YES. [2024-06-04 14:09:54,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 1772 events. 994/1772 cut-off events. For 151974/151974 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10117 event pairs, 186 based on Foata normal form. 2/1774 useless extension candidates. Maximal degree in co-relation 12517. Up to 1661 conditions per place. [2024-06-04 14:09:54,364 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 329 selfloop transitions, 30 changer transitions 0/361 dead transitions. [2024-06-04 14:09:54,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 361 transitions, 5224 flow [2024-06-04 14:09:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:09:54,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:09:54,365 INFO L175 Difference]: Start difference. First operand has 392 places, 340 transitions, 4412 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:09:54,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 361 transitions, 5224 flow [2024-06-04 14:09:55,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 361 transitions, 5127 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:55,073 INFO L231 Difference]: Finished difference. Result has 394 places, 341 transitions, 4419 flow [2024-06-04 14:09:55,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4419, PETRI_PLACES=394, PETRI_TRANSITIONS=341} [2024-06-04 14:09:55,073 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 362 predicate places. [2024-06-04 14:09:55,073 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 341 transitions, 4419 flow [2024-06-04 14:09:55,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:55,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:55,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:09:55,073 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:55,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1482902431, now seen corresponding path program 8 times [2024-06-04 14:09:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538168739] [2024-06-04 14:09:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:56,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:56,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538168739] [2024-06-04 14:09:56,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538168739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:56,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:56,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841237986] [2024-06-04 14:09:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:56,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:56,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:56,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:56,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 341 transitions, 4419 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:56,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:56,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:56,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:56,799 INFO L124 PetriNetUnfolderBase]: 998/1780 cut-off events. [2024-06-04 14:09:56,799 INFO L125 PetriNetUnfolderBase]: For 154993/154993 co-relation queries the response was YES. [2024-06-04 14:09:56,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12755 conditions, 1780 events. 998/1780 cut-off events. For 154993/154993 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10163 event pairs, 186 based on Foata normal form. 2/1782 useless extension candidates. Maximal degree in co-relation 12575. Up to 1672 conditions per place. [2024-06-04 14:09:56,822 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 333 selfloop transitions, 27 changer transitions 0/362 dead transitions. [2024-06-04 14:09:56,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 362 transitions, 5233 flow [2024-06-04 14:09:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:09:56,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:09:56,823 INFO L175 Difference]: Start difference. First operand has 394 places, 341 transitions, 4419 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:09:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 362 transitions, 5233 flow [2024-06-04 14:09:57,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 362 transitions, 5139 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:57,575 INFO L231 Difference]: Finished difference. Result has 396 places, 342 transitions, 4425 flow [2024-06-04 14:09:57,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4425, PETRI_PLACES=396, PETRI_TRANSITIONS=342} [2024-06-04 14:09:57,576 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 364 predicate places. [2024-06-04 14:09:57,576 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 342 transitions, 4425 flow [2024-06-04 14:09:57,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:57,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:57,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:57,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:09:57,576 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:57,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 177348825, now seen corresponding path program 9 times [2024-06-04 14:09:57,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:57,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927246532] [2024-06-04 14:09:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:57,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:58,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:58,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927246532] [2024-06-04 14:09:58,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927246532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:58,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:58,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:58,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393654819] [2024-06-04 14:09:58,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:58,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:58,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:58,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:58,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 342 transitions, 4425 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:58,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:58,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:58,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:59,382 INFO L124 PetriNetUnfolderBase]: 1002/1788 cut-off events. [2024-06-04 14:09:59,383 INFO L125 PetriNetUnfolderBase]: For 158202/158202 co-relation queries the response was YES. [2024-06-04 14:09:59,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12814 conditions, 1788 events. 1002/1788 cut-off events. For 158202/158202 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10223 event pairs, 182 based on Foata normal form. 2/1790 useless extension candidates. Maximal degree in co-relation 12633. Up to 1662 conditions per place. [2024-06-04 14:09:59,411 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 335 selfloop transitions, 29 changer transitions 0/366 dead transitions. [2024-06-04 14:09:59,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 366 transitions, 5257 flow [2024-06-04 14:09:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 14:09:59,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:09:59,412 INFO L175 Difference]: Start difference. First operand has 396 places, 342 transitions, 4425 flow. Second operand 12 states and 128 transitions. [2024-06-04 14:09:59,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 366 transitions, 5257 flow [2024-06-04 14:10:00,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 366 transitions, 5167 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:00,174 INFO L231 Difference]: Finished difference. Result has 399 places, 343 transitions, 4441 flow [2024-06-04 14:10:00,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4441, PETRI_PLACES=399, PETRI_TRANSITIONS=343} [2024-06-04 14:10:00,175 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 367 predicate places. [2024-06-04 14:10:00,175 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 343 transitions, 4441 flow [2024-06-04 14:10:00,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:00,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:00,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:00,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:10:00,175 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:00,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1371959755, now seen corresponding path program 2 times [2024-06-04 14:10:00,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:00,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463461262] [2024-06-04 14:10:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:00,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463461262] [2024-06-04 14:10:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463461262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:01,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141570091] [2024-06-04 14:10:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:01,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:01,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:01,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 343 transitions, 4441 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:01,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:01,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:01,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:02,413 INFO L124 PetriNetUnfolderBase]: 1000/1785 cut-off events. [2024-06-04 14:10:02,414 INFO L125 PetriNetUnfolderBase]: For 149541/149541 co-relation queries the response was YES. [2024-06-04 14:10:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 1785 events. 1000/1785 cut-off events. For 149541/149541 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10221 event pairs, 190 based on Foata normal form. 1/1786 useless extension candidates. Maximal degree in co-relation 12461. Up to 1668 conditions per place. [2024-06-04 14:10:02,434 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 325 selfloop transitions, 36 changer transitions 0/363 dead transitions. [2024-06-04 14:10:02,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 363 transitions, 5223 flow [2024-06-04 14:10:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:02,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:02,435 INFO L175 Difference]: Start difference. First operand has 399 places, 343 transitions, 4441 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:02,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 363 transitions, 5223 flow [2024-06-04 14:10:03,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 363 transitions, 5097 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:03,147 INFO L231 Difference]: Finished difference. Result has 400 places, 343 transitions, 4395 flow [2024-06-04 14:10:03,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4395, PETRI_PLACES=400, PETRI_TRANSITIONS=343} [2024-06-04 14:10:03,147 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-04 14:10:03,147 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 343 transitions, 4395 flow [2024-06-04 14:10:03,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:03,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:03,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:03,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:10:03,148 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:03,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1367311367, now seen corresponding path program 2 times [2024-06-04 14:10:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:03,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791331668] [2024-06-04 14:10:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791331668] [2024-06-04 14:10:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791331668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:05,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:05,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:05,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387879199] [2024-06-04 14:10:05,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:05,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:05,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:05,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:05,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 343 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:05,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:05,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:05,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:06,441 INFO L124 PetriNetUnfolderBase]: 1006/1795 cut-off events. [2024-06-04 14:10:06,442 INFO L125 PetriNetUnfolderBase]: For 157011/157011 co-relation queries the response was YES. [2024-06-04 14:10:06,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12693 conditions, 1795 events. 1006/1795 cut-off events. For 157011/157011 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10311 event pairs, 190 based on Foata normal form. 2/1797 useless extension candidates. Maximal degree in co-relation 12510. Up to 1682 conditions per place. [2024-06-04 14:10:06,464 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 334 selfloop transitions, 31 changer transitions 0/367 dead transitions. [2024-06-04 14:10:06,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 367 transitions, 5263 flow [2024-06-04 14:10:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:10:06,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:10:06,465 INFO L175 Difference]: Start difference. First operand has 400 places, 343 transitions, 4395 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:10:06,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 367 transitions, 5263 flow [2024-06-04 14:10:07,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 367 transitions, 5118 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 14:10:07,231 INFO L231 Difference]: Finished difference. Result has 401 places, 345 transitions, 4393 flow [2024-06-04 14:10:07,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4393, PETRI_PLACES=401, PETRI_TRANSITIONS=345} [2024-06-04 14:10:07,231 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 369 predicate places. [2024-06-04 14:10:07,231 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 345 transitions, 4393 flow [2024-06-04 14:10:07,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:07,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:07,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:07,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:10:07,232 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:07,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:07,232 INFO L85 PathProgramCache]: Analyzing trace with hash 680802995, now seen corresponding path program 10 times [2024-06-04 14:10:07,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:07,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163758329] [2024-06-04 14:10:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:07,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:08,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:08,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163758329] [2024-06-04 14:10:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163758329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:08,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429884518] [2024-06-04 14:10:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:08,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:08,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:08,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:08,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:08,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 345 transitions, 4393 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:08,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:08,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:08,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:09,019 INFO L124 PetriNetUnfolderBase]: 1010/1803 cut-off events. [2024-06-04 14:10:09,019 INFO L125 PetriNetUnfolderBase]: For 161007/161007 co-relation queries the response was YES. [2024-06-04 14:10:09,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12756 conditions, 1803 events. 1010/1803 cut-off events. For 161007/161007 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10336 event pairs, 176 based on Foata normal form. 2/1805 useless extension candidates. Maximal degree in co-relation 12572. Up to 1630 conditions per place. [2024-06-04 14:10:09,041 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 50 changer transitions 0/365 dead transitions. [2024-06-04 14:10:09,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 365 transitions, 5217 flow [2024-06-04 14:10:09,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:10:09,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:10:09,042 INFO L175 Difference]: Start difference. First operand has 401 places, 345 transitions, 4393 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:10:09,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 365 transitions, 5217 flow [2024-06-04 14:10:09,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 365 transitions, 5096 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:09,704 INFO L231 Difference]: Finished difference. Result has 402 places, 346 transitions, 4422 flow [2024-06-04 14:10:09,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4422, PETRI_PLACES=402, PETRI_TRANSITIONS=346} [2024-06-04 14:10:09,704 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 370 predicate places. [2024-06-04 14:10:09,705 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 346 transitions, 4422 flow [2024-06-04 14:10:09,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:09,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:09,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:09,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:10:09,705 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:09,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 680798345, now seen corresponding path program 11 times [2024-06-04 14:10:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693354864] [2024-06-04 14:10:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693354864] [2024-06-04 14:10:10,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693354864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:10,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:10,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:10,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105465729] [2024-06-04 14:10:10,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:10,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:10,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:10,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:10,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 346 transitions, 4422 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:10,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:10,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:10,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:11,564 INFO L124 PetriNetUnfolderBase]: 1014/1811 cut-off events. [2024-06-04 14:10:11,564 INFO L125 PetriNetUnfolderBase]: For 164598/164598 co-relation queries the response was YES. [2024-06-04 14:10:11,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 1811 events. 1014/1811 cut-off events. For 164598/164598 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10453 event pairs, 174 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 12682. Up to 1638 conditions per place. [2024-06-04 14:10:11,587 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 315 selfloop transitions, 49 changer transitions 0/366 dead transitions. [2024-06-04 14:10:11,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 366 transitions, 5248 flow [2024-06-04 14:10:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:10:11,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:10:11,588 INFO L175 Difference]: Start difference. First operand has 402 places, 346 transitions, 4422 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:10:11,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 366 transitions, 5248 flow [2024-06-04 14:10:12,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 366 transitions, 5108 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:12,307 INFO L231 Difference]: Finished difference. Result has 404 places, 347 transitions, 4432 flow [2024-06-04 14:10:12,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4432, PETRI_PLACES=404, PETRI_TRANSITIONS=347} [2024-06-04 14:10:12,308 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-04 14:10:12,308 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 347 transitions, 4432 flow [2024-06-04 14:10:12,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:12,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:12,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:12,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:10:12,308 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:12,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash 857934515, now seen corresponding path program 12 times [2024-06-04 14:10:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:12,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026943896] [2024-06-04 14:10:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:12,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026943896] [2024-06-04 14:10:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026943896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:13,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:13,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391109718] [2024-06-04 14:10:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:13,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:13,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:13,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:13,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 347 transitions, 4432 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:13,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:13,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:13,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:14,190 INFO L124 PetriNetUnfolderBase]: 1018/1819 cut-off events. [2024-06-04 14:10:14,190 INFO L125 PetriNetUnfolderBase]: For 167636/167636 co-relation queries the response was YES. [2024-06-04 14:10:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12927 conditions, 1819 events. 1018/1819 cut-off events. For 167636/167636 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10513 event pairs, 162 based on Foata normal form. 2/1821 useless extension candidates. Maximal degree in co-relation 12741. Up to 1556 conditions per place. [2024-06-04 14:10:14,213 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 292 selfloop transitions, 76 changer transitions 0/370 dead transitions. [2024-06-04 14:10:14,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 370 transitions, 5286 flow [2024-06-04 14:10:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:14,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:14,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:10:14,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:10:14,214 INFO L175 Difference]: Start difference. First operand has 404 places, 347 transitions, 4432 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:10:14,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 370 transitions, 5286 flow [2024-06-04 14:10:15,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 370 transitions, 5146 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:15,026 INFO L231 Difference]: Finished difference. Result has 406 places, 348 transitions, 4498 flow [2024-06-04 14:10:15,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4498, PETRI_PLACES=406, PETRI_TRANSITIONS=348} [2024-06-04 14:10:15,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-04 14:10:15,027 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 348 transitions, 4498 flow [2024-06-04 14:10:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:15,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:15,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:10:15,027 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash 680683025, now seen corresponding path program 13 times [2024-06-04 14:10:15,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:15,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535885181] [2024-06-04 14:10:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:15,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:15,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:15,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535885181] [2024-06-04 14:10:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535885181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:15,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:15,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493669548] [2024-06-04 14:10:15,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:15,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:15,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:16,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:16,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 348 transitions, 4498 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:16,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:16,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:16,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:16,730 INFO L124 PetriNetUnfolderBase]: 1022/1827 cut-off events. [2024-06-04 14:10:16,730 INFO L125 PetriNetUnfolderBase]: For 170904/170904 co-relation queries the response was YES. [2024-06-04 14:10:16,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13063 conditions, 1827 events. 1022/1827 cut-off events. For 170904/170904 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10581 event pairs, 174 based on Foata normal form. 2/1829 useless extension candidates. Maximal degree in co-relation 12876. Up to 1654 conditions per place. [2024-06-04 14:10:16,752 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 48 changer transitions 0/368 dead transitions. [2024-06-04 14:10:16,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 368 transitions, 5330 flow [2024-06-04 14:10:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:16,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:16,753 INFO L175 Difference]: Start difference. First operand has 406 places, 348 transitions, 4498 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:16,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 368 transitions, 5330 flow [2024-06-04 14:10:17,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 368 transitions, 5134 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:17,541 INFO L231 Difference]: Finished difference. Result has 408 places, 349 transitions, 4454 flow [2024-06-04 14:10:17,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4454, PETRI_PLACES=408, PETRI_TRANSITIONS=349} [2024-06-04 14:10:17,542 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-04 14:10:17,542 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 349 transitions, 4454 flow [2024-06-04 14:10:17,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:17,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:17,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:17,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:10:17,542 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:17,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash 685451569, now seen corresponding path program 3 times [2024-06-04 14:10:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58797912] [2024-06-04 14:10:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:19,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58797912] [2024-06-04 14:10:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58797912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:19,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:19,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:19,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799012223] [2024-06-04 14:10:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:19,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:19,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 349 transitions, 4454 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:19,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:19,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:19,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:20,051 INFO L124 PetriNetUnfolderBase]: 1028/1837 cut-off events. [2024-06-04 14:10:20,052 INFO L125 PetriNetUnfolderBase]: For 173443/173443 co-relation queries the response was YES. [2024-06-04 14:10:20,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 1837 events. 1028/1837 cut-off events. For 173443/173443 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10637 event pairs, 178 based on Foata normal form. 2/1839 useless extension candidates. Maximal degree in co-relation 12863. Up to 1654 conditions per place. [2024-06-04 14:10:20,076 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 317 selfloop transitions, 53 changer transitions 0/372 dead transitions. [2024-06-04 14:10:20,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 372 transitions, 5332 flow [2024-06-04 14:10:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:10:20,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:10:20,078 INFO L175 Difference]: Start difference. First operand has 408 places, 349 transitions, 4454 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:10:20,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 372 transitions, 5332 flow [2024-06-04 14:10:20,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 372 transitions, 5190 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:20,870 INFO L231 Difference]: Finished difference. Result has 411 places, 351 transitions, 4503 flow [2024-06-04 14:10:20,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4503, PETRI_PLACES=411, PETRI_TRANSITIONS=351} [2024-06-04 14:10:20,870 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 379 predicate places. [2024-06-04 14:10:20,870 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 351 transitions, 4503 flow [2024-06-04 14:10:20,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:20,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:20,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:20,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:10:20,871 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:20,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash 857941459, now seen corresponding path program 4 times [2024-06-04 14:10:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586484104] [2024-06-04 14:10:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:20,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586484104] [2024-06-04 14:10:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586484104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:22,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:22,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31882681] [2024-06-04 14:10:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:22,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:22,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 351 transitions, 4503 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:22,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:22,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:22,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:23,545 INFO L124 PetriNetUnfolderBase]: 1054/1879 cut-off events. [2024-06-04 14:10:23,546 INFO L125 PetriNetUnfolderBase]: For 202627/202627 co-relation queries the response was YES. [2024-06-04 14:10:23,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 1879 events. 1054/1879 cut-off events. For 202627/202627 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10887 event pairs, 165 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 13763. Up to 1484 conditions per place. [2024-06-04 14:10:23,567 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 286 selfloop transitions, 93 changer transitions 0/381 dead transitions. [2024-06-04 14:10:23,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 381 transitions, 6025 flow [2024-06-04 14:10:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:10:23,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-04 14:10:23,568 INFO L175 Difference]: Start difference. First operand has 411 places, 351 transitions, 4503 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:10:23,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 381 transitions, 6025 flow [2024-06-04 14:10:24,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 381 transitions, 5856 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:24,454 INFO L231 Difference]: Finished difference. Result has 412 places, 357 transitions, 4770 flow [2024-06-04 14:10:24,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4770, PETRI_PLACES=412, PETRI_TRANSITIONS=357} [2024-06-04 14:10:24,455 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 380 predicate places. [2024-06-04 14:10:24,455 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 357 transitions, 4770 flow [2024-06-04 14:10:24,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:24,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:24,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:24,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:10:24,455 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:24,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash 858172099, now seen corresponding path program 5 times [2024-06-04 14:10:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:24,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85653659] [2024-06-04 14:10:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:26,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:26,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85653659] [2024-06-04 14:10:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85653659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132205025] [2024-06-04 14:10:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:26,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:26,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:26,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:26,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:26,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 357 transitions, 4770 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:26,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:26,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:26,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:27,333 INFO L124 PetriNetUnfolderBase]: 1050/1873 cut-off events. [2024-06-04 14:10:27,333 INFO L125 PetriNetUnfolderBase]: For 193275/193275 co-relation queries the response was YES. [2024-06-04 14:10:27,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13733 conditions, 1873 events. 1050/1873 cut-off events. For 193275/193275 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10852 event pairs, 162 based on Foata normal form. 2/1875 useless extension candidates. Maximal degree in co-relation 13543. Up to 1481 conditions per place. [2024-06-04 14:10:27,358 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 280 selfloop transitions, 99 changer transitions 0/381 dead transitions. [2024-06-04 14:10:27,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 381 transitions, 5834 flow [2024-06-04 14:10:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:10:27,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-04 14:10:27,359 INFO L175 Difference]: Start difference. First operand has 412 places, 357 transitions, 4770 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:10:27,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 381 transitions, 5834 flow [2024-06-04 14:10:28,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 381 transitions, 5602 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-04 14:10:28,215 INFO L231 Difference]: Finished difference. Result has 417 places, 357 transitions, 4745 flow [2024-06-04 14:10:28,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4745, PETRI_PLACES=417, PETRI_TRANSITIONS=357} [2024-06-04 14:10:28,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 385 predicate places. [2024-06-04 14:10:28,215 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 357 transitions, 4745 flow [2024-06-04 14:10:28,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:28,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:28,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:28,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:10:28,216 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:28,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash -886183227, now seen corresponding path program 1 times [2024-06-04 14:10:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:28,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236924083] [2024-06-04 14:10:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:28,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:29,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236924083] [2024-06-04 14:10:29,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236924083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:29,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:29,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870199305] [2024-06-04 14:10:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:29,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:29,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:30,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:30,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 357 transitions, 4745 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:30,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:30,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:30,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:30,805 INFO L124 PetriNetUnfolderBase]: 1054/1881 cut-off events. [2024-06-04 14:10:30,805 INFO L125 PetriNetUnfolderBase]: For 194620/194620 co-relation queries the response was YES. [2024-06-04 14:10:30,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13825 conditions, 1881 events. 1054/1881 cut-off events. For 194620/194620 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10968 event pairs, 272 based on Foata normal form. 2/1883 useless extension candidates. Maximal degree in co-relation 13633. Up to 1748 conditions per place. [2024-06-04 14:10:30,830 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 332 selfloop transitions, 44 changer transitions 0/378 dead transitions. [2024-06-04 14:10:30,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 378 transitions, 5589 flow [2024-06-04 14:10:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:10:30,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-04 14:10:30,831 INFO L175 Difference]: Start difference. First operand has 417 places, 357 transitions, 4745 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:10:30,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 378 transitions, 5589 flow [2024-06-04 14:10:31,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 378 transitions, 5415 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:31,703 INFO L231 Difference]: Finished difference. Result has 420 places, 358 transitions, 4693 flow [2024-06-04 14:10:31,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4571, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4693, PETRI_PLACES=420, PETRI_TRANSITIONS=358} [2024-06-04 14:10:31,703 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 388 predicate places. [2024-06-04 14:10:31,703 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 358 transitions, 4693 flow [2024-06-04 14:10:31,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:31,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:31,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:31,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:10:31,704 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:31,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash 851505425, now seen corresponding path program 14 times [2024-06-04 14:10:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135075022] [2024-06-04 14:10:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:31,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:32,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135075022] [2024-06-04 14:10:32,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135075022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:32,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:32,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:32,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688866445] [2024-06-04 14:10:32,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:32,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:32,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:33,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:33,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 358 transitions, 4693 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:33,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:33,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:33,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:33,757 INFO L124 PetriNetUnfolderBase]: 1058/1889 cut-off events. [2024-06-04 14:10:33,757 INFO L125 PetriNetUnfolderBase]: For 198791/198791 co-relation queries the response was YES. [2024-06-04 14:10:33,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13850 conditions, 1889 events. 1058/1889 cut-off events. For 198791/198791 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10993 event pairs, 168 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 13657. Up to 1675 conditions per place. [2024-06-04 14:10:33,785 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2024-06-04 14:10:33,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 380 transitions, 5565 flow [2024-06-04 14:10:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:10:33,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:10:33,786 INFO L175 Difference]: Start difference. First operand has 420 places, 358 transitions, 4693 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:10:33,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 380 transitions, 5565 flow [2024-06-04 14:10:34,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 380 transitions, 5459 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:34,699 INFO L231 Difference]: Finished difference. Result has 421 places, 359 transitions, 4769 flow [2024-06-04 14:10:34,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4769, PETRI_PLACES=421, PETRI_TRANSITIONS=359} [2024-06-04 14:10:34,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 389 predicate places. [2024-06-04 14:10:34,699 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 359 transitions, 4769 flow [2024-06-04 14:10:34,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:34,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:34,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:34,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:10:34,700 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:34,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:34,700 INFO L85 PathProgramCache]: Analyzing trace with hash 851500775, now seen corresponding path program 15 times [2024-06-04 14:10:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:34,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973621196] [2024-06-04 14:10:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:34,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:35,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:35,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973621196] [2024-06-04 14:10:35,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973621196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:35,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:35,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:35,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942614055] [2024-06-04 14:10:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:35,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:35,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:35,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:35,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:35,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:35,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 359 transitions, 4769 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:35,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:35,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:35,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:36,607 INFO L124 PetriNetUnfolderBase]: 1062/1897 cut-off events. [2024-06-04 14:10:36,607 INFO L125 PetriNetUnfolderBase]: For 203290/203290 co-relation queries the response was YES. [2024-06-04 14:10:36,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14025 conditions, 1897 events. 1062/1897 cut-off events. For 203290/203290 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11073 event pairs, 166 based on Foata normal form. 2/1899 useless extension candidates. Maximal degree in co-relation 13831. Up to 1683 conditions per place. [2024-06-04 14:10:36,632 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 61 changer transitions 0/381 dead transitions. [2024-06-04 14:10:36,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 381 transitions, 5643 flow [2024-06-04 14:10:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:10:36,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:10:36,633 INFO L175 Difference]: Start difference. First operand has 421 places, 359 transitions, 4769 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:10:36,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 381 transitions, 5643 flow [2024-06-04 14:10:37,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 381 transitions, 5471 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:37,484 INFO L231 Difference]: Finished difference. Result has 423 places, 360 transitions, 4779 flow [2024-06-04 14:10:37,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4597, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4779, PETRI_PLACES=423, PETRI_TRANSITIONS=360} [2024-06-04 14:10:37,484 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2024-06-04 14:10:37,484 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 360 transitions, 4779 flow [2024-06-04 14:10:37,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:37,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:37,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:37,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:10:37,485 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:37,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2075412913, now seen corresponding path program 6 times [2024-06-04 14:10:37,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:37,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167164465] [2024-06-04 14:10:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167164465] [2024-06-04 14:10:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167164465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:39,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:39,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037716611] [2024-06-04 14:10:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:39,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:39,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 360 transitions, 4779 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:39,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:39,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:39,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:40,295 INFO L124 PetriNetUnfolderBase]: 1063/1899 cut-off events. [2024-06-04 14:10:40,295 INFO L125 PetriNetUnfolderBase]: For 199013/199013 co-relation queries the response was YES. [2024-06-04 14:10:40,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13899 conditions, 1899 events. 1063/1899 cut-off events. For 199013/199013 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11071 event pairs, 168 based on Foata normal form. 2/1901 useless extension candidates. Maximal degree in co-relation 13704. Up to 1675 conditions per place. [2024-06-04 14:10:40,315 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 318 selfloop transitions, 65 changer transitions 0/385 dead transitions. [2024-06-04 14:10:40,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 385 transitions, 5679 flow [2024-06-04 14:10:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:10:40,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:10:40,316 INFO L175 Difference]: Start difference. First operand has 423 places, 360 transitions, 4779 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:10:40,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 385 transitions, 5679 flow [2024-06-04 14:10:41,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 385 transitions, 5507 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:41,191 INFO L231 Difference]: Finished difference. Result has 426 places, 362 transitions, 4808 flow [2024-06-04 14:10:41,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4607, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4808, PETRI_PLACES=426, PETRI_TRANSITIONS=362} [2024-06-04 14:10:41,191 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-04 14:10:41,191 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 362 transitions, 4808 flow [2024-06-04 14:10:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:41,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:41,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:41,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:10:41,192 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:41,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash 999720737, now seen corresponding path program 16 times [2024-06-04 14:10:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266342058] [2024-06-04 14:10:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:42,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266342058] [2024-06-04 14:10:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266342058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:42,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625825006] [2024-06-04 14:10:42,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:42,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:42,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:42,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 362 transitions, 4808 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:42,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:42,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:42,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:43,139 INFO L124 PetriNetUnfolderBase]: 1067/1907 cut-off events. [2024-06-04 14:10:43,139 INFO L125 PetriNetUnfolderBase]: For 202724/202724 co-relation queries the response was YES. [2024-06-04 14:10:43,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13972 conditions, 1907 events. 1067/1907 cut-off events. For 202724/202724 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11144 event pairs, 237 based on Foata normal form. 2/1909 useless extension candidates. Maximal degree in co-relation 13776. Up to 1715 conditions per place. [2024-06-04 14:10:43,161 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 320 selfloop transitions, 58 changer transitions 0/380 dead transitions. [2024-06-04 14:10:43,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 380 transitions, 5666 flow [2024-06-04 14:10:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:10:43,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:10:43,162 INFO L175 Difference]: Start difference. First operand has 426 places, 362 transitions, 4808 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:10:43,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 380 transitions, 5666 flow [2024-06-04 14:10:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 380 transitions, 5493 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:44,020 INFO L231 Difference]: Finished difference. Result has 426 places, 363 transitions, 4820 flow [2024-06-04 14:10:44,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4820, PETRI_PLACES=426, PETRI_TRANSITIONS=363} [2024-06-04 14:10:44,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-04 14:10:44,020 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 363 transitions, 4820 flow [2024-06-04 14:10:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:44,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:44,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:44,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:10:44,020 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:44,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1763042821, now seen corresponding path program 17 times [2024-06-04 14:10:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:44,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390668293] [2024-06-04 14:10:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:44,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390668293] [2024-06-04 14:10:45,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390668293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:45,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:45,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520521620] [2024-06-04 14:10:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:45,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:45,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 363 transitions, 4820 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:45,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:45,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:45,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:45,977 INFO L124 PetriNetUnfolderBase]: 1071/1915 cut-off events. [2024-06-04 14:10:45,977 INFO L125 PetriNetUnfolderBase]: For 207187/207187 co-relation queries the response was YES. [2024-06-04 14:10:45,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14081 conditions, 1915 events. 1071/1915 cut-off events. For 207187/207187 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11235 event pairs, 235 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 13884. Up to 1732 conditions per place. [2024-06-04 14:10:46,001 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 330 selfloop transitions, 49 changer transitions 0/381 dead transitions. [2024-06-04 14:10:46,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 381 transitions, 5680 flow [2024-06-04 14:10:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:10:46,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:10:46,002 INFO L175 Difference]: Start difference. First operand has 426 places, 363 transitions, 4820 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:10:46,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 381 transitions, 5680 flow [2024-06-04 14:10:46,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 381 transitions, 5511 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:46,962 INFO L231 Difference]: Finished difference. Result has 428 places, 364 transitions, 4817 flow [2024-06-04 14:10:46,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4655, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4817, PETRI_PLACES=428, PETRI_TRANSITIONS=364} [2024-06-04 14:10:46,963 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-04 14:10:46,963 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 364 transitions, 4817 flow [2024-06-04 14:10:46,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:46,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:46,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:10:46,963 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:46,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 999600767, now seen corresponding path program 18 times [2024-06-04 14:10:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:46,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773259811] [2024-06-04 14:10:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:47,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773259811] [2024-06-04 14:10:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773259811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:47,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382507560] [2024-06-04 14:10:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:47,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:48,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:48,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 364 transitions, 4817 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:48,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:48,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:48,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:48,706 INFO L124 PetriNetUnfolderBase]: 1075/1923 cut-off events. [2024-06-04 14:10:48,706 INFO L125 PetriNetUnfolderBase]: For 203529/203529 co-relation queries the response was YES. [2024-06-04 14:10:48,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14072 conditions, 1923 events. 1075/1923 cut-off events. For 203529/203529 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11305 event pairs, 233 based on Foata normal form. 2/1925 useless extension candidates. Maximal degree in co-relation 13874. Up to 1749 conditions per place. [2024-06-04 14:10:48,730 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 340 selfloop transitions, 40 changer transitions 0/382 dead transitions. [2024-06-04 14:10:48,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 382 transitions, 5675 flow [2024-06-04 14:10:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:10:48,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:10:48,731 INFO L175 Difference]: Start difference. First operand has 428 places, 364 transitions, 4817 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:10:48,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 382 transitions, 5675 flow [2024-06-04 14:10:49,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 382 transitions, 5523 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:49,724 INFO L231 Difference]: Finished difference. Result has 430 places, 365 transitions, 4811 flow [2024-06-04 14:10:49,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4811, PETRI_PLACES=430, PETRI_TRANSITIONS=365} [2024-06-04 14:10:49,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-04 14:10:49,725 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 365 transitions, 4811 flow [2024-06-04 14:10:49,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:49,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:49,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:10:49,725 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:49,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -102906885, now seen corresponding path program 19 times [2024-06-04 14:10:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073035924] [2024-06-04 14:10:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073035924] [2024-06-04 14:10:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073035924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:50,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179544702] [2024-06-04 14:10:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:50,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:50,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:50,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:50,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 365 transitions, 4811 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:50,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:50,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:50,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:51,535 INFO L124 PetriNetUnfolderBase]: 1079/1931 cut-off events. [2024-06-04 14:10:51,535 INFO L125 PetriNetUnfolderBase]: For 200068/200068 co-relation queries the response was YES. [2024-06-04 14:10:51,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14063 conditions, 1931 events. 1079/1931 cut-off events. For 200068/200068 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11353 event pairs, 161 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 13864. Up to 1640 conditions per place. [2024-06-04 14:10:51,560 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 316 selfloop transitions, 65 changer transitions 0/383 dead transitions. [2024-06-04 14:10:51,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 383 transitions, 5667 flow [2024-06-04 14:10:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:51,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:10:51,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:10:51,561 INFO L175 Difference]: Start difference. First operand has 430 places, 365 transitions, 4811 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:10:51,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 383 transitions, 5667 flow [2024-06-04 14:10:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 383 transitions, 5535 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:52,444 INFO L231 Difference]: Finished difference. Result has 433 places, 366 transitions, 4875 flow [2024-06-04 14:10:52,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4683, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4875, PETRI_PLACES=433, PETRI_TRANSITIONS=366} [2024-06-04 14:10:52,444 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-04 14:10:52,444 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 366 transitions, 4875 flow [2024-06-04 14:10:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:52,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:52,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:52,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:10:52,444 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:52,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:52,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1629535037, now seen corresponding path program 3 times [2024-06-04 14:10:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:52,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374214280] [2024-06-04 14:10:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:54,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:54,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374214280] [2024-06-04 14:10:54,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374214280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:54,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:54,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968291006] [2024-06-04 14:10:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:54,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:54,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:54,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 366 transitions, 4875 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:54,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:54,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:54,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:54,858 INFO L124 PetriNetUnfolderBase]: 1077/1928 cut-off events. [2024-06-04 14:10:54,859 INFO L125 PetriNetUnfolderBase]: For 182013/182013 co-relation queries the response was YES. [2024-06-04 14:10:54,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 1928 events. 1077/1928 cut-off events. For 182013/182013 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11355 event pairs, 239 based on Foata normal form. 1/1929 useless extension candidates. Maximal degree in co-relation 13669. Up to 1727 conditions per place. [2024-06-04 14:10:54,884 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 314 selfloop transitions, 67 changer transitions 0/383 dead transitions. [2024-06-04 14:10:54,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 383 transitions, 5685 flow [2024-06-04 14:10:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:10:54,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:10:54,885 INFO L175 Difference]: Start difference. First operand has 433 places, 366 transitions, 4875 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:10:54,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 383 transitions, 5685 flow [2024-06-04 14:10:55,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 383 transitions, 5481 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:55,751 INFO L231 Difference]: Finished difference. Result has 434 places, 366 transitions, 4825 flow [2024-06-04 14:10:55,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4825, PETRI_PLACES=434, PETRI_TRANSITIONS=366} [2024-06-04 14:10:55,751 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-04 14:10:55,751 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 366 transitions, 4825 flow [2024-06-04 14:10:55,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:55,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:55,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:55,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:10:55,752 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:55,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1647567077, now seen corresponding path program 7 times [2024-06-04 14:10:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:55,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872883769] [2024-06-04 14:10:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:57,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872883769] [2024-06-04 14:10:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872883769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:57,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:57,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:57,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433027106] [2024-06-04 14:10:57,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:57,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:57,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:57,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:57,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:57,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 366 transitions, 4825 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:57,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:57,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:57,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:58,345 INFO L124 PetriNetUnfolderBase]: 1083/1938 cut-off events. [2024-06-04 14:10:58,345 INFO L125 PetriNetUnfolderBase]: For 180166/180166 co-relation queries the response was YES. [2024-06-04 14:10:58,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13850 conditions, 1938 events. 1083/1938 cut-off events. For 180166/180166 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11433 event pairs, 241 based on Foata normal form. 2/1940 useless extension candidates. Maximal degree in co-relation 13649. Up to 1749 conditions per place. [2024-06-04 14:10:58,365 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 333 selfloop transitions, 52 changer transitions 0/387 dead transitions. [2024-06-04 14:10:58,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 387 transitions, 5733 flow [2024-06-04 14:10:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:10:58,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:10:58,366 INFO L175 Difference]: Start difference. First operand has 434 places, 366 transitions, 4825 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:10:58,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 387 transitions, 5733 flow [2024-06-04 14:10:59,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 387 transitions, 5475 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-04 14:10:59,187 INFO L231 Difference]: Finished difference. Result has 433 places, 368 transitions, 4770 flow [2024-06-04 14:10:59,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4770, PETRI_PLACES=433, PETRI_TRANSITIONS=368} [2024-06-04 14:10:59,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-04 14:10:59,188 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 368 transitions, 4770 flow [2024-06-04 14:10:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:59,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:59,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:10:59,189 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:59,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash 406910361, now seen corresponding path program 20 times [2024-06-04 14:10:59,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:59,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845411807] [2024-06-04 14:10:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:00,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:00,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845411807] [2024-06-04 14:11:00,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845411807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:00,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:00,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:00,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209678723] [2024-06-04 14:11:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:00,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:00,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:00,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:00,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:00,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 368 transitions, 4770 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:00,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:00,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:00,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:01,178 INFO L124 PetriNetUnfolderBase]: 1087/1946 cut-off events. [2024-06-04 14:11:01,179 INFO L125 PetriNetUnfolderBase]: For 179141/179141 co-relation queries the response was YES. [2024-06-04 14:11:01,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13807 conditions, 1946 events. 1087/1946 cut-off events. For 179141/179141 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11479 event pairs, 165 based on Foata normal form. 2/1948 useless extension candidates. Maximal degree in co-relation 13607. Up to 1680 conditions per place. [2024-06-04 14:11:01,207 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 308 selfloop transitions, 77 changer transitions 0/387 dead transitions. [2024-06-04 14:11:01,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 387 transitions, 5640 flow [2024-06-04 14:11:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:11:01,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:11:01,208 INFO L175 Difference]: Start difference. First operand has 433 places, 368 transitions, 4770 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:11:01,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 387 transitions, 5640 flow [2024-06-04 14:11:02,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 387 transitions, 5483 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:02,051 INFO L231 Difference]: Finished difference. Result has 434 places, 369 transitions, 4821 flow [2024-06-04 14:11:02,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4613, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4821, PETRI_PLACES=434, PETRI_TRANSITIONS=369} [2024-06-04 14:11:02,051 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-04 14:11:02,051 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 369 transitions, 4821 flow [2024-06-04 14:11:02,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:02,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:02,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:11:02,051 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:02,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 406905711, now seen corresponding path program 21 times [2024-06-04 14:11:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458987796] [2024-06-04 14:11:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458987796] [2024-06-04 14:11:03,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458987796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:03,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:03,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:03,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123419139] [2024-06-04 14:11:03,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:03,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:03,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:03,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:03,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 369 transitions, 4821 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:03,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:03,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:03,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:04,019 INFO L124 PetriNetUnfolderBase]: 1091/1954 cut-off events. [2024-06-04 14:11:04,020 INFO L125 PetriNetUnfolderBase]: For 182753/182753 co-relation queries the response was YES. [2024-06-04 14:11:04,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13947 conditions, 1954 events. 1091/1954 cut-off events. For 182753/182753 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11562 event pairs, 161 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 13746. Up to 1688 conditions per place. [2024-06-04 14:11:04,046 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 311 selfloop transitions, 75 changer transitions 0/388 dead transitions. [2024-06-04 14:11:04,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 388 transitions, 5693 flow [2024-06-04 14:11:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:11:04,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:11:04,047 INFO L175 Difference]: Start difference. First operand has 434 places, 369 transitions, 4821 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:11:04,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 388 transitions, 5693 flow [2024-06-04 14:11:04,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 388 transitions, 5495 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:04,968 INFO L231 Difference]: Finished difference. Result has 436 places, 370 transitions, 4829 flow [2024-06-04 14:11:04,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4829, PETRI_PLACES=436, PETRI_TRANSITIONS=370} [2024-06-04 14:11:04,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-04 14:11:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 370 transitions, 4829 flow [2024-06-04 14:11:04,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:04,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:04,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:04,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:11:04,969 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:04,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2094572285, now seen corresponding path program 22 times [2024-06-04 14:11:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:04,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893455080] [2024-06-04 14:11:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:04,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:06,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893455080] [2024-06-04 14:11:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893455080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:06,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:06,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:06,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815848373] [2024-06-04 14:11:06,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:06,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:06,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:06,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 370 transitions, 4829 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:06,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:06,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:06,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:06,942 INFO L124 PetriNetUnfolderBase]: 1095/1962 cut-off events. [2024-06-04 14:11:06,942 INFO L125 PetriNetUnfolderBase]: For 182693/182693 co-relation queries the response was YES. [2024-06-04 14:11:06,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13976 conditions, 1962 events. 1095/1962 cut-off events. For 182693/182693 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11619 event pairs, 197 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 13774. Up to 1767 conditions per place. [2024-06-04 14:11:06,969 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 328 selfloop transitions, 57 changer transitions 0/387 dead transitions. [2024-06-04 14:11:06,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 387 transitions, 5691 flow [2024-06-04 14:11:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:11:06,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:11:06,971 INFO L175 Difference]: Start difference. First operand has 436 places, 370 transitions, 4829 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:11:06,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 387 transitions, 5691 flow [2024-06-04 14:11:07,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 387 transitions, 5497 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:07,917 INFO L231 Difference]: Finished difference. Result has 438 places, 371 transitions, 4805 flow [2024-06-04 14:11:07,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4805, PETRI_PLACES=438, PETRI_TRANSITIONS=371} [2024-06-04 14:11:07,918 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 406 predicate places. [2024-06-04 14:11:07,918 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 371 transitions, 4805 flow [2024-06-04 14:11:07,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:07,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:07,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:07,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:11:07,918 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:07,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2094576935, now seen corresponding path program 23 times [2024-06-04 14:11:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:07,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527258247] [2024-06-04 14:11:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:07,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527258247] [2024-06-04 14:11:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527258247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:08,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:08,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776844385] [2024-06-04 14:11:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:08,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:08,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:08,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:08,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:08,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 371 transitions, 4805 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:08,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:08,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:08,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:09,561 INFO L124 PetriNetUnfolderBase]: 1099/1970 cut-off events. [2024-06-04 14:11:09,561 INFO L125 PetriNetUnfolderBase]: For 182565/182565 co-relation queries the response was YES. [2024-06-04 14:11:09,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 1970 events. 1099/1970 cut-off events. For 182565/182565 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11700 event pairs, 195 based on Foata normal form. 2/1972 useless extension candidates. Maximal degree in co-relation 13760. Up to 1775 conditions per place. [2024-06-04 14:11:09,589 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 331 selfloop transitions, 55 changer transitions 0/388 dead transitions. [2024-06-04 14:11:09,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 388 transitions, 5667 flow [2024-06-04 14:11:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:11:09,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:11:09,590 INFO L175 Difference]: Start difference. First operand has 438 places, 371 transitions, 4805 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:11:09,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 388 transitions, 5667 flow [2024-06-04 14:11:10,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 388 transitions, 5509 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:10,509 INFO L231 Difference]: Finished difference. Result has 440 places, 372 transitions, 4813 flow [2024-06-04 14:11:10,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4813, PETRI_PLACES=440, PETRI_TRANSITIONS=372} [2024-06-04 14:11:10,509 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2024-06-04 14:11:10,509 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 372 transitions, 4813 flow [2024-06-04 14:11:10,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:10,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:10,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:11:10,510 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2094692255, now seen corresponding path program 24 times [2024-06-04 14:11:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538850768] [2024-06-04 14:11:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538850768] [2024-06-04 14:11:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538850768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927640393] [2024-06-04 14:11:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:11,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:11,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:11,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 372 transitions, 4813 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:11,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:11,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:11,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:12,217 INFO L124 PetriNetUnfolderBase]: 1103/1978 cut-off events. [2024-06-04 14:11:12,217 INFO L125 PetriNetUnfolderBase]: For 182713/182713 co-relation queries the response was YES. [2024-06-04 14:11:12,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13992 conditions, 1978 events. 1103/1978 cut-off events. For 182713/182713 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11743 event pairs, 191 based on Foata normal form. 2/1980 useless extension candidates. Maximal degree in co-relation 13788. Up to 1783 conditions per place. [2024-06-04 14:11:12,245 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 334 selfloop transitions, 53 changer transitions 0/389 dead transitions. [2024-06-04 14:11:12,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 389 transitions, 5675 flow [2024-06-04 14:11:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:11:12,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:11:12,246 INFO L175 Difference]: Start difference. First operand has 440 places, 372 transitions, 4813 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:11:12,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 389 transitions, 5675 flow [2024-06-04 14:11:13,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 389 transitions, 5521 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:13,271 INFO L231 Difference]: Finished difference. Result has 442 places, 373 transitions, 4821 flow [2024-06-04 14:11:13,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4821, PETRI_PLACES=442, PETRI_TRANSITIONS=373} [2024-06-04 14:11:13,272 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 410 predicate places. [2024-06-04 14:11:13,272 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 373 transitions, 4821 flow [2024-06-04 14:11:13,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:13,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:13,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:13,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:11:13,272 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:13,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:13,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1923689931, now seen corresponding path program 8 times [2024-06-04 14:11:13,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:13,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507591712] [2024-06-04 14:11:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:15,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:15,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507591712] [2024-06-04 14:11:15,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507591712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:15,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:15,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:15,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634998430] [2024-06-04 14:11:15,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:15,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:15,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:15,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:15,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 373 transitions, 4821 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:15,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:15,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:15,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:16,087 INFO L124 PetriNetUnfolderBase]: 1109/1988 cut-off events. [2024-06-04 14:11:16,087 INFO L125 PetriNetUnfolderBase]: For 182622/182622 co-relation queries the response was YES. [2024-06-04 14:11:16,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14051 conditions, 1988 events. 1109/1988 cut-off events. For 182622/182622 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11851 event pairs, 169 based on Foata normal form. 2/1990 useless extension candidates. Maximal degree in co-relation 13846. Up to 1702 conditions per place. [2024-06-04 14:11:16,114 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 310 selfloop transitions, 83 changer transitions 0/395 dead transitions. [2024-06-04 14:11:16,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 395 transitions, 5757 flow [2024-06-04 14:11:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:11:16,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:11:16,115 INFO L175 Difference]: Start difference. First operand has 442 places, 373 transitions, 4821 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:11:16,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 395 transitions, 5757 flow [2024-06-04 14:11:17,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 395 transitions, 5609 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:17,046 INFO L231 Difference]: Finished difference. Result has 445 places, 375 transitions, 4939 flow [2024-06-04 14:11:17,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4673, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4939, PETRI_PLACES=445, PETRI_TRANSITIONS=375} [2024-06-04 14:11:17,046 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 413 predicate places. [2024-06-04 14:11:17,047 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 375 transitions, 4939 flow [2024-06-04 14:11:17,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:17,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:17,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:11:17,047 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:17,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1917194811, now seen corresponding path program 9 times [2024-06-04 14:11:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:17,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217433193] [2024-06-04 14:11:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:17,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:19,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217433193] [2024-06-04 14:11:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217433193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:19,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945150083] [2024-06-04 14:11:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:19,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:19,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 375 transitions, 4939 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:19,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:19,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:19,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:20,127 INFO L124 PetriNetUnfolderBase]: 1131/2024 cut-off events. [2024-06-04 14:11:20,128 INFO L125 PetriNetUnfolderBase]: For 197540/197540 co-relation queries the response was YES. [2024-06-04 14:11:20,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14697 conditions, 2024 events. 1131/2024 cut-off events. For 197540/197540 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12059 event pairs, 164 based on Foata normal form. 2/2026 useless extension candidates. Maximal degree in co-relation 14491. Up to 1435 conditions per place. [2024-06-04 14:11:20,155 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 244 selfloop transitions, 159 changer transitions 0/405 dead transitions. [2024-06-04 14:11:20,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 405 transitions, 6257 flow [2024-06-04 14:11:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:11:20,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:11:20,156 INFO L175 Difference]: Start difference. First operand has 445 places, 375 transitions, 4939 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:11:20,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 405 transitions, 6257 flow [2024-06-04 14:11:21,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 405 transitions, 6023 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:21,199 INFO L231 Difference]: Finished difference. Result has 447 places, 381 transitions, 5239 flow [2024-06-04 14:11:21,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5239, PETRI_PLACES=447, PETRI_TRANSITIONS=381} [2024-06-04 14:11:21,200 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 415 predicate places. [2024-06-04 14:11:21,200 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 381 transitions, 5239 flow [2024-06-04 14:11:21,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:21,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:21,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:21,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:11:21,200 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:21,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:21,200 INFO L85 PathProgramCache]: Analyzing trace with hash 559482103, now seen corresponding path program 10 times [2024-06-04 14:11:21,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:21,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708819521] [2024-06-04 14:11:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:21,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:23,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:23,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708819521] [2024-06-04 14:11:23,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708819521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:23,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:23,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518983470] [2024-06-04 14:11:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:23,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:23,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:23,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:23,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 381 transitions, 5239 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:23,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:23,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:23,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:24,492 INFO L124 PetriNetUnfolderBase]: 1137/2034 cut-off events. [2024-06-04 14:11:24,492 INFO L125 PetriNetUnfolderBase]: For 201140/201140 co-relation queries the response was YES. [2024-06-04 14:11:24,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15025 conditions, 2034 events. 1137/2034 cut-off events. For 201140/201140 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12113 event pairs, 204 based on Foata normal form. 2/2036 useless extension candidates. Maximal degree in co-relation 14818. Up to 1819 conditions per place. [2024-06-04 14:11:24,520 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 63 changer transitions 0/401 dead transitions. [2024-06-04 14:11:24,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 401 transitions, 6185 flow [2024-06-04 14:11:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:11:24,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:11:24,520 INFO L175 Difference]: Start difference. First operand has 447 places, 381 transitions, 5239 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:11:24,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 401 transitions, 6185 flow [2024-06-04 14:11:25,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 401 transitions, 5787 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:25,491 INFO L231 Difference]: Finished difference. Result has 450 places, 383 transitions, 5075 flow [2024-06-04 14:11:25,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5075, PETRI_PLACES=450, PETRI_TRANSITIONS=383} [2024-06-04 14:11:25,491 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-04 14:11:25,491 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 383 transitions, 5075 flow [2024-06-04 14:11:25,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:25,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:25,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:11:25,491 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:25,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash 731965049, now seen corresponding path program 25 times [2024-06-04 14:11:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:25,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460593] [2024-06-04 14:11:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:26,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:26,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460593] [2024-06-04 14:11:26,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:26,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:26,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:26,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395421050] [2024-06-04 14:11:26,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:26,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:26,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:26,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:26,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 383 transitions, 5075 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:26,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:26,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:26,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:27,558 INFO L124 PetriNetUnfolderBase]: 1141/2042 cut-off events. [2024-06-04 14:11:27,558 INFO L125 PetriNetUnfolderBase]: For 202952/202952 co-relation queries the response was YES. [2024-06-04 14:11:27,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14794 conditions, 2042 events. 1141/2042 cut-off events. For 202952/202952 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12194 event pairs, 168 based on Foata normal form. 2/2044 useless extension candidates. Maximal degree in co-relation 14586. Up to 1689 conditions per place. [2024-06-04 14:11:27,586 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 300 selfloop transitions, 101 changer transitions 0/403 dead transitions. [2024-06-04 14:11:27,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 403 transitions, 5983 flow [2024-06-04 14:11:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:11:27,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:11:27,588 INFO L175 Difference]: Start difference. First operand has 450 places, 383 transitions, 5075 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:11:27,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 403 transitions, 5983 flow [2024-06-04 14:11:28,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 403 transitions, 5815 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:28,645 INFO L231 Difference]: Finished difference. Result has 451 places, 384 transitions, 5163 flow [2024-06-04 14:11:28,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5163, PETRI_PLACES=451, PETRI_TRANSITIONS=384} [2024-06-04 14:11:28,645 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 419 predicate places. [2024-06-04 14:11:28,645 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 384 transitions, 5163 flow [2024-06-04 14:11:28,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:28,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:11:28,645 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:28,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash -157869091, now seen corresponding path program 2 times [2024-06-04 14:11:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669929094] [2024-06-04 14:11:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:30,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669929094] [2024-06-04 14:11:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669929094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:30,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:30,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:30,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750393772] [2024-06-04 14:11:30,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:30,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:30,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:30,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:30,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 384 transitions, 5163 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:30,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:30,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:30,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:31,047 INFO L124 PetriNetUnfolderBase]: 1145/2050 cut-off events. [2024-06-04 14:11:31,047 INFO L125 PetriNetUnfolderBase]: For 206839/206839 co-relation queries the response was YES. [2024-06-04 14:11:31,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14956 conditions, 2050 events. 1145/2050 cut-off events. For 206839/206839 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12311 event pairs, 287 based on Foata normal form. 2/2052 useless extension candidates. Maximal degree in co-relation 14747. Up to 1851 conditions per place. [2024-06-04 14:11:31,076 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 341 selfloop transitions, 58 changer transitions 0/401 dead transitions. [2024-06-04 14:11:31,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 401 transitions, 6041 flow [2024-06-04 14:11:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:11:31,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:11:31,077 INFO L175 Difference]: Start difference. First operand has 451 places, 384 transitions, 5163 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:11:31,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 401 transitions, 6041 flow [2024-06-04 14:11:32,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 401 transitions, 5797 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:32,137 INFO L231 Difference]: Finished difference. Result has 453 places, 385 transitions, 5075 flow [2024-06-04 14:11:32,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4919, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5075, PETRI_PLACES=453, PETRI_TRANSITIONS=385} [2024-06-04 14:11:32,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 421 predicate places. [2024-06-04 14:11:32,137 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 385 transitions, 5075 flow [2024-06-04 14:11:32,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:32,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:32,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:32,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:11:32,137 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:32,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1374099977, now seen corresponding path program 11 times [2024-06-04 14:11:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:32,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952842106] [2024-06-04 14:11:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:33,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:33,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952842106] [2024-06-04 14:11:33,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952842106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:33,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:33,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770181146] [2024-06-04 14:11:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:33,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:33,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:33,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:33,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 385 transitions, 5075 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:33,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:33,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:33,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:34,861 INFO L124 PetriNetUnfolderBase]: 1156/2068 cut-off events. [2024-06-04 14:11:34,861 INFO L125 PetriNetUnfolderBase]: For 213222/213222 co-relation queries the response was YES. [2024-06-04 14:11:34,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15123 conditions, 2068 events. 1156/2068 cut-off events. For 213222/213222 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12394 event pairs, 169 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 14913. Up to 1469 conditions per place. [2024-06-04 14:11:34,890 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 267 selfloop transitions, 143 changer transitions 0/412 dead transitions. [2024-06-04 14:11:34,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 412 transitions, 6583 flow [2024-06-04 14:11:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:11:34,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:11:34,891 INFO L175 Difference]: Start difference. First operand has 453 places, 385 transitions, 5075 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:11:34,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 412 transitions, 6583 flow [2024-06-04 14:11:36,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 412 transitions, 6437 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:36,007 INFO L231 Difference]: Finished difference. Result has 456 places, 389 transitions, 5379 flow [2024-06-04 14:11:36,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5379, PETRI_PLACES=456, PETRI_TRANSITIONS=389} [2024-06-04 14:11:36,008 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 424 predicate places. [2024-06-04 14:11:36,008 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 389 transitions, 5379 flow [2024-06-04 14:11:36,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:36,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:36,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:11:36,009 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:36,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1945785423, now seen corresponding path program 12 times [2024-06-04 14:11:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:36,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353222878] [2024-06-04 14:11:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:36,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:37,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:37,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353222878] [2024-06-04 14:11:37,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353222878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:37,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553636597] [2024-06-04 14:11:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:37,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:38,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:38,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 389 transitions, 5379 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:38,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:38,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:39,104 INFO L124 PetriNetUnfolderBase]: 1152/2062 cut-off events. [2024-06-04 14:11:39,104 INFO L125 PetriNetUnfolderBase]: For 196687/196687 co-relation queries the response was YES. [2024-06-04 14:11:39,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15000 conditions, 2062 events. 1152/2062 cut-off events. For 196687/196687 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12339 event pairs, 168 based on Foata normal form. 2/2064 useless extension candidates. Maximal degree in co-relation 14789. Up to 1466 conditions per place. [2024-06-04 14:11:39,132 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 245 selfloop transitions, 165 changer transitions 0/412 dead transitions. [2024-06-04 14:11:39,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 412 transitions, 6507 flow [2024-06-04 14:11:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:11:39,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:11:39,133 INFO L175 Difference]: Start difference. First operand has 456 places, 389 transitions, 5379 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:11:39,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 412 transitions, 6507 flow [2024-06-04 14:11:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 412 transitions, 6209 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-04 14:11:40,124 INFO L231 Difference]: Finished difference. Result has 460 places, 389 transitions, 5419 flow [2024-06-04 14:11:40,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5081, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5419, PETRI_PLACES=460, PETRI_TRANSITIONS=389} [2024-06-04 14:11:40,125 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 428 predicate places. [2024-06-04 14:11:40,125 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 389 transitions, 5419 flow [2024-06-04 14:11:40,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:40,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:40,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:40,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:11:40,125 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:40,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash 449695171, now seen corresponding path program 26 times [2024-06-04 14:11:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:40,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303987233] [2024-06-04 14:11:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:40,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:41,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:41,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303987233] [2024-06-04 14:11:41,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303987233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:41,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326811] [2024-06-04 14:11:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:41,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:41,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:41,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 389 transitions, 5419 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:41,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:41,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:41,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:41,953 INFO L124 PetriNetUnfolderBase]: 1156/2072 cut-off events. [2024-06-04 14:11:41,953 INFO L125 PetriNetUnfolderBase]: For 199678/199678 co-relation queries the response was YES. [2024-06-04 14:11:41,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15163 conditions, 2072 events. 1156/2072 cut-off events. For 199678/199678 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 12431 event pairs, 221 based on Foata normal form. 2/2074 useless extension candidates. Maximal degree in co-relation 14951. Up to 1897 conditions per place. [2024-06-04 14:11:41,983 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 355 selfloop transitions, 48 changer transitions 0/405 dead transitions. [2024-06-04 14:11:41,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 405 transitions, 6313 flow [2024-06-04 14:11:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:11:41,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:11:41,984 INFO L175 Difference]: Start difference. First operand has 460 places, 389 transitions, 5419 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:11:41,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 405 transitions, 6313 flow [2024-06-04 14:11:43,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 405 transitions, 6051 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:43,063 INFO L231 Difference]: Finished difference. Result has 461 places, 390 transitions, 5305 flow [2024-06-04 14:11:43,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5157, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5305, PETRI_PLACES=461, PETRI_TRANSITIONS=390} [2024-06-04 14:11:43,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 429 predicate places. [2024-06-04 14:11:43,064 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 390 transitions, 5305 flow [2024-06-04 14:11:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:43,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:43,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:11:43,064 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:43,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2019671999, now seen corresponding path program 27 times [2024-06-04 14:11:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:43,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194133870] [2024-06-04 14:11:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:44,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:44,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194133870] [2024-06-04 14:11:44,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194133870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:44,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:44,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:44,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482661809] [2024-06-04 14:11:44,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:44,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:44,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:44,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:44,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:44,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 390 transitions, 5305 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:44,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:44,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:44,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:45,158 INFO L124 PetriNetUnfolderBase]: 1160/2080 cut-off events. [2024-06-04 14:11:45,158 INFO L125 PetriNetUnfolderBase]: For 204049/204049 co-relation queries the response was YES. [2024-06-04 14:11:45,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15063 conditions, 2080 events. 1160/2080 cut-off events. For 204049/204049 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12512 event pairs, 209 based on Foata normal form. 2/2082 useless extension candidates. Maximal degree in co-relation 14850. Up to 1874 conditions per place. [2024-06-04 14:11:45,188 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 349 selfloop transitions, 57 changer transitions 0/408 dead transitions. [2024-06-04 14:11:45,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 408 transitions, 6217 flow [2024-06-04 14:11:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:11:45,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:11:45,189 INFO L175 Difference]: Start difference. First operand has 461 places, 390 transitions, 5305 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:11:45,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 408 transitions, 6217 flow [2024-06-04 14:11:46,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 408 transitions, 6079 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:46,229 INFO L231 Difference]: Finished difference. Result has 463 places, 391 transitions, 5336 flow [2024-06-04 14:11:46,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5336, PETRI_PLACES=463, PETRI_TRANSITIONS=391} [2024-06-04 14:11:46,229 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 431 predicate places. [2024-06-04 14:11:46,230 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 391 transitions, 5336 flow [2024-06-04 14:11:46,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:46,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:46,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:46,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:11:46,230 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:46,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 108407987, now seen corresponding path program 13 times [2024-06-04 14:11:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779530547] [2024-06-04 14:11:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779530547] [2024-06-04 14:11:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779530547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:47,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:47,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:47,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184967416] [2024-06-04 14:11:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:47,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:47,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:48,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:48,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 391 transitions, 5336 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:48,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:48,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:48,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:49,096 INFO L124 PetriNetUnfolderBase]: 1176/2106 cut-off events. [2024-06-04 14:11:49,096 INFO L125 PetriNetUnfolderBase]: For 222798/222798 co-relation queries the response was YES. [2024-06-04 14:11:49,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15625 conditions, 2106 events. 1176/2106 cut-off events. For 222798/222798 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12640 event pairs, 152 based on Foata normal form. 2/2108 useless extension candidates. Maximal degree in co-relation 15411. Up to 1737 conditions per place. [2024-06-04 14:11:49,122 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 96 changer transitions 0/419 dead transitions. [2024-06-04 14:11:49,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 419 transitions, 6674 flow [2024-06-04 14:11:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:11:49,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:11:49,123 INFO L175 Difference]: Start difference. First operand has 463 places, 391 transitions, 5336 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:11:49,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 419 transitions, 6674 flow [2024-06-04 14:11:50,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 419 transitions, 6517 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:50,274 INFO L231 Difference]: Finished difference. Result has 466 places, 395 transitions, 5560 flow [2024-06-04 14:11:50,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5179, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5560, PETRI_PLACES=466, PETRI_TRANSITIONS=395} [2024-06-04 14:11:50,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 434 predicate places. [2024-06-04 14:11:50,275 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 395 transitions, 5560 flow [2024-06-04 14:11:50,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:50,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:50,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:50,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:11:50,275 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:50,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash 108399617, now seen corresponding path program 14 times [2024-06-04 14:11:50,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:50,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807805085] [2024-06-04 14:11:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:50,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807805085] [2024-06-04 14:11:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807805085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:52,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:52,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970801645] [2024-06-04 14:11:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:52,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:52,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:52,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:52,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 395 transitions, 5560 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:52,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:52,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:52,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:53,738 INFO L124 PetriNetUnfolderBase]: 1182/2116 cut-off events. [2024-06-04 14:11:53,739 INFO L125 PetriNetUnfolderBase]: For 226619/226619 co-relation queries the response was YES. [2024-06-04 14:11:53,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15842 conditions, 2116 events. 1182/2116 cut-off events. For 226619/226619 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12723 event pairs, 155 based on Foata normal form. 2/2118 useless extension candidates. Maximal degree in co-relation 15627. Up to 1743 conditions per place. [2024-06-04 14:11:53,767 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 322 selfloop transitions, 96 changer transitions 0/420 dead transitions. [2024-06-04 14:11:53,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 420 transitions, 6810 flow [2024-06-04 14:11:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:11:53,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:11:53,768 INFO L175 Difference]: Start difference. First operand has 466 places, 395 transitions, 5560 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:11:53,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 420 transitions, 6810 flow [2024-06-04 14:11:54,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 420 transitions, 6492 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:54,991 INFO L231 Difference]: Finished difference. Result has 469 places, 397 transitions, 5533 flow [2024-06-04 14:11:54,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5533, PETRI_PLACES=469, PETRI_TRANSITIONS=397} [2024-06-04 14:11:54,992 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 437 predicate places. [2024-06-04 14:11:54,992 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 397 transitions, 5533 flow [2024-06-04 14:11:54,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:54,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:54,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:54,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:11:54,992 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:54,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2026101089, now seen corresponding path program 28 times [2024-06-04 14:11:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409127147] [2024-06-04 14:11:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409127147] [2024-06-04 14:11:56,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409127147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:56,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:56,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044818498] [2024-06-04 14:11:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:56,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:56,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 397 transitions, 5533 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:56,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:56,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:57,203 INFO L124 PetriNetUnfolderBase]: 1186/2124 cut-off events. [2024-06-04 14:11:57,203 INFO L125 PetriNetUnfolderBase]: For 229101/229101 co-relation queries the response was YES. [2024-06-04 14:11:57,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15804 conditions, 2124 events. 1186/2124 cut-off events. For 229101/229101 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12812 event pairs, 210 based on Foata normal form. 2/2126 useless extension candidates. Maximal degree in co-relation 15588. Up to 1887 conditions per place. [2024-06-04 14:11:57,234 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 349 selfloop transitions, 65 changer transitions 0/416 dead transitions. [2024-06-04 14:11:57,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 416 transitions, 6469 flow [2024-06-04 14:11:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:11:57,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:11:57,235 INFO L175 Difference]: Start difference. First operand has 469 places, 397 transitions, 5533 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:11:57,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 416 transitions, 6469 flow [2024-06-04 14:11:58,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 416 transitions, 6238 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:58,420 INFO L231 Difference]: Finished difference. Result has 471 places, 398 transitions, 5489 flow [2024-06-04 14:11:58,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5302, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5489, PETRI_PLACES=471, PETRI_TRANSITIONS=398} [2024-06-04 14:11:58,420 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-04 14:11:58,420 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 398 transitions, 5489 flow [2024-06-04 14:11:58,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:58,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:58,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:58,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:11:58,421 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:58,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash 108162033, now seen corresponding path program 29 times [2024-06-04 14:11:58,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:58,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869923030] [2024-06-04 14:11:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:58,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:59,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:59,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869923030] [2024-06-04 14:11:59,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869923030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:59,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:59,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:59,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251504795] [2024-06-04 14:11:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:59,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:59,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:59,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 398 transitions, 5489 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:59,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:59,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:59,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:00,586 INFO L124 PetriNetUnfolderBase]: 1190/2132 cut-off events. [2024-06-04 14:12:00,586 INFO L125 PetriNetUnfolderBase]: For 233534/233534 co-relation queries the response was YES. [2024-06-04 14:12:00,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15820 conditions, 2132 events. 1190/2132 cut-off events. For 233534/233534 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12878 event pairs, 158 based on Foata normal form. 2/2134 useless extension candidates. Maximal degree in co-relation 15603. Up to 1820 conditions per place. [2024-06-04 14:12:00,616 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 331 selfloop transitions, 85 changer transitions 0/418 dead transitions. [2024-06-04 14:12:00,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 418 transitions, 6437 flow [2024-06-04 14:12:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:12:00,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:12:00,617 INFO L175 Difference]: Start difference. First operand has 471 places, 398 transitions, 5489 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:12:00,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 418 transitions, 6437 flow [2024-06-04 14:12:01,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 418 transitions, 6262 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:01,831 INFO L231 Difference]: Finished difference. Result has 473 places, 399 transitions, 5542 flow [2024-06-04 14:12:01,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5542, PETRI_PLACES=473, PETRI_TRANSITIONS=399} [2024-06-04 14:12:01,832 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 441 predicate places. [2024-06-04 14:12:01,832 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 399 transitions, 5542 flow [2024-06-04 14:12:01,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:01,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:01,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:01,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:12:01,832 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:01,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash 108168977, now seen corresponding path program 15 times [2024-06-04 14:12:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:01,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492666959] [2024-06-04 14:12:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:01,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:03,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492666959] [2024-06-04 14:12:03,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492666959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:03,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:03,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:03,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329297784] [2024-06-04 14:12:03,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:03,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:03,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:03,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:03,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:03,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:03,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 399 transitions, 5542 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:03,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:03,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:04,648 INFO L124 PetriNetUnfolderBase]: 1196/2142 cut-off events. [2024-06-04 14:12:04,648 INFO L125 PetriNetUnfolderBase]: For 236675/236675 co-relation queries the response was YES. [2024-06-04 14:12:04,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15929 conditions, 2142 events. 1196/2142 cut-off events. For 236675/236675 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 12932 event pairs, 155 based on Foata normal form. 2/2144 useless extension candidates. Maximal degree in co-relation 15711. Up to 1765 conditions per place. [2024-06-04 14:12:04,676 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 323 selfloop transitions, 96 changer transitions 0/421 dead transitions. [2024-06-04 14:12:04,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 421 transitions, 6762 flow [2024-06-04 14:12:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:12:04,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-04 14:12:04,677 INFO L175 Difference]: Start difference. First operand has 473 places, 399 transitions, 5542 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:12:04,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 421 transitions, 6762 flow [2024-06-04 14:12:06,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 421 transitions, 6544 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:06,079 INFO L231 Difference]: Finished difference. Result has 475 places, 401 transitions, 5590 flow [2024-06-04 14:12:06,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5324, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5590, PETRI_PLACES=475, PETRI_TRANSITIONS=401} [2024-06-04 14:12:06,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 443 predicate places. [2024-06-04 14:12:06,079 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 401 transitions, 5590 flow [2024-06-04 14:12:06,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:06,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:06,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:06,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:12:06,080 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:06,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:06,080 INFO L85 PathProgramCache]: Analyzing trace with hash 101732943, now seen corresponding path program 30 times [2024-06-04 14:12:06,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:06,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012284262] [2024-06-04 14:12:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:07,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:07,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012284262] [2024-06-04 14:12:07,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012284262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:07,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:07,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:07,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70387150] [2024-06-04 14:12:07,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:07,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:07,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:07,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 401 transitions, 5590 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:07,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:07,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:07,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:08,270 INFO L124 PetriNetUnfolderBase]: 1200/2150 cut-off events. [2024-06-04 14:12:08,270 INFO L125 PetriNetUnfolderBase]: For 240426/240426 co-relation queries the response was YES. [2024-06-04 14:12:08,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16017 conditions, 2150 events. 1200/2150 cut-off events. For 240426/240426 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12961 event pairs, 160 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 15798. Up to 1852 conditions per place. [2024-06-04 14:12:08,305 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 335 selfloop transitions, 82 changer transitions 0/419 dead transitions. [2024-06-04 14:12:08,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 419 transitions, 6532 flow [2024-06-04 14:12:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:12:08,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:12:08,306 INFO L175 Difference]: Start difference. First operand has 475 places, 401 transitions, 5590 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:12:08,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 419 transitions, 6532 flow [2024-06-04 14:12:09,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 419 transitions, 6297 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:09,402 INFO L231 Difference]: Finished difference. Result has 477 places, 402 transitions, 5579 flow [2024-06-04 14:12:09,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5355, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5579, PETRI_PLACES=477, PETRI_TRANSITIONS=402} [2024-06-04 14:12:09,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-04 14:12:09,402 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 402 transitions, 5579 flow [2024-06-04 14:12:09,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:09,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:09,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:09,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:12:09,403 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:09,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash 101728293, now seen corresponding path program 31 times [2024-06-04 14:12:09,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:09,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236896699] [2024-06-04 14:12:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:09,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:10,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:10,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236896699] [2024-06-04 14:12:10,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236896699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:10,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:10,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:10,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685575501] [2024-06-04 14:12:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:10,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:10,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:10,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:10,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 402 transitions, 5579 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:10,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:10,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:10,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:11,387 INFO L124 PetriNetUnfolderBase]: 1204/2158 cut-off events. [2024-06-04 14:12:11,388 INFO L125 PetriNetUnfolderBase]: For 241338/241338 co-relation queries the response was YES. [2024-06-04 14:12:11,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16052 conditions, 2158 events. 1204/2158 cut-off events. For 241338/241338 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13053 event pairs, 158 based on Foata normal form. 2/2160 useless extension candidates. Maximal degree in co-relation 15833. Up to 1860 conditions per place. [2024-06-04 14:12:11,419 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 337 selfloop transitions, 81 changer transitions 0/420 dead transitions. [2024-06-04 14:12:11,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 420 transitions, 6523 flow [2024-06-04 14:12:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:12:11,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:12:11,420 INFO L175 Difference]: Start difference. First operand has 477 places, 402 transitions, 5579 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:12:11,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 420 transitions, 6523 flow [2024-06-04 14:12:12,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 420 transitions, 6309 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:12,726 INFO L231 Difference]: Finished difference. Result has 479 places, 403 transitions, 5589 flow [2024-06-04 14:12:12,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5365, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5589, PETRI_PLACES=479, PETRI_TRANSITIONS=403} [2024-06-04 14:12:12,726 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 447 predicate places. [2024-06-04 14:12:12,726 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 403 transitions, 5589 flow [2024-06-04 14:12:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:12,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:12,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:12,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:12:12,727 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:12,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:12,727 INFO L85 PathProgramCache]: Analyzing trace with hash -566878847, now seen corresponding path program 16 times [2024-06-04 14:12:12,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:12,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319516834] [2024-06-04 14:12:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:12,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319516834] [2024-06-04 14:12:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319516834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:14,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:14,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947014018] [2024-06-04 14:12:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:14,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:14,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:14,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 403 transitions, 5589 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:14,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:14,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:14,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:15,435 INFO L124 PetriNetUnfolderBase]: 1210/2168 cut-off events. [2024-06-04 14:12:15,435 INFO L125 PetriNetUnfolderBase]: For 243907/243907 co-relation queries the response was YES. [2024-06-04 14:12:15,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16073 conditions, 2168 events. 1210/2168 cut-off events. For 243907/243907 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13135 event pairs, 144 based on Foata normal form. 2/2170 useless extension candidates. Maximal degree in co-relation 15853. Up to 1149 conditions per place. [2024-06-04 14:12:15,468 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 233 selfloop transitions, 195 changer transitions 0/430 dead transitions. [2024-06-04 14:12:15,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 430 transitions, 7085 flow [2024-06-04 14:12:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:12:15,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-04 14:12:15,469 INFO L175 Difference]: Start difference. First operand has 479 places, 403 transitions, 5589 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:12:15,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 430 transitions, 7085 flow [2024-06-04 14:12:16,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 430 transitions, 6871 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:16,698 INFO L231 Difference]: Finished difference. Result has 482 places, 405 transitions, 5822 flow [2024-06-04 14:12:16,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5822, PETRI_PLACES=482, PETRI_TRANSITIONS=405} [2024-06-04 14:12:16,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-04 14:12:16,699 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 405 transitions, 5822 flow [2024-06-04 14:12:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:16,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:16,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:16,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 14:12:16,700 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:16,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1848964919, now seen corresponding path program 32 times [2024-06-04 14:12:16,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:16,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600692071] [2024-06-04 14:12:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:17,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600692071] [2024-06-04 14:12:17,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600692071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:17,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:17,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:17,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546124916] [2024-06-04 14:12:17,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:17,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:17,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:17,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:17,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 405 transitions, 5822 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:17,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:17,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:17,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:18,632 INFO L124 PetriNetUnfolderBase]: 1214/2176 cut-off events. [2024-06-04 14:12:18,632 INFO L125 PetriNetUnfolderBase]: For 249009/249009 co-relation queries the response was YES. [2024-06-04 14:12:18,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16451 conditions, 2176 events. 1214/2176 cut-off events. For 249009/249009 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13194 event pairs, 234 based on Foata normal form. 2/2178 useless extension candidates. Maximal degree in co-relation 16230. Up to 2001 conditions per place. [2024-06-04 14:12:18,659 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 372 selfloop transitions, 47 changer transitions 0/421 dead transitions. [2024-06-04 14:12:18,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 421 transitions, 6758 flow [2024-06-04 14:12:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:12:18,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:12:18,660 INFO L175 Difference]: Start difference. First operand has 482 places, 405 transitions, 5822 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:12:18,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 421 transitions, 6758 flow [2024-06-04 14:12:19,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 421 transitions, 6308 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:19,822 INFO L231 Difference]: Finished difference. Result has 483 places, 406 transitions, 5530 flow [2024-06-04 14:12:19,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5530, PETRI_PLACES=483, PETRI_TRANSITIONS=406} [2024-06-04 14:12:19,822 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 451 predicate places. [2024-06-04 14:12:19,823 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 406 transitions, 5530 flow [2024-06-04 14:12:19,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:19,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:19,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:19,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 14:12:19,823 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:19,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:19,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2026108033, now seen corresponding path program 17 times [2024-06-04 14:12:19,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:19,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326620067] [2024-06-04 14:12:19,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:19,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326620067] [2024-06-04 14:12:21,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326620067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:21,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:21,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:21,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38248619] [2024-06-04 14:12:21,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:21,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:21,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:21,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:22,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:22,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 406 transitions, 5530 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:22,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:22,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:22,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:23,075 INFO L124 PetriNetUnfolderBase]: 1220/2186 cut-off events. [2024-06-04 14:12:23,075 INFO L125 PetriNetUnfolderBase]: For 252153/252153 co-relation queries the response was YES. [2024-06-04 14:12:23,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 2186 events. 1220/2186 cut-off events. For 252153/252153 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13287 event pairs, 218 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 15918. Up to 1929 conditions per place. [2024-06-04 14:12:23,111 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 356 selfloop transitions, 70 changer transitions 0/428 dead transitions. [2024-06-04 14:12:23,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 428 transitions, 6540 flow [2024-06-04 14:12:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:12:23,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:12:23,112 INFO L175 Difference]: Start difference. First operand has 483 places, 406 transitions, 5530 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:12:23,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 428 transitions, 6540 flow [2024-06-04 14:12:24,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 428 transitions, 6392 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:24,416 INFO L231 Difference]: Finished difference. Result has 486 places, 408 transitions, 5624 flow [2024-06-04 14:12:24,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5382, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5624, PETRI_PLACES=486, PETRI_TRANSITIONS=408} [2024-06-04 14:12:24,417 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-04 14:12:24,417 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 408 transitions, 5624 flow [2024-06-04 14:12:24,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:24,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:24,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:24,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 14:12:24,417 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:24,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:24,417 INFO L85 PathProgramCache]: Analyzing trace with hash 101912867, now seen corresponding path program 18 times [2024-06-04 14:12:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:24,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099600698] [2024-06-04 14:12:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099600698] [2024-06-04 14:12:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099600698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:26,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796752147] [2024-06-04 14:12:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:26,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:26,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:26,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 408 transitions, 5624 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:26,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:26,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:26,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:27,667 INFO L124 PetriNetUnfolderBase]: 1216/2180 cut-off events. [2024-06-04 14:12:27,667 INFO L125 PetriNetUnfolderBase]: For 238453/238453 co-relation queries the response was YES. [2024-06-04 14:12:27,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15831 conditions, 2180 events. 1216/2180 cut-off events. For 238453/238453 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13217 event pairs, 167 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 15608. Up to 1872 conditions per place. [2024-06-04 14:12:27,710 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 339 selfloop transitions, 84 changer transitions 0/425 dead transitions. [2024-06-04 14:12:27,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 425 transitions, 6526 flow [2024-06-04 14:12:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:27,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:12:27,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:12:27,711 INFO L175 Difference]: Start difference. First operand has 486 places, 408 transitions, 5624 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:12:27,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 425 transitions, 6526 flow [2024-06-04 14:12:28,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 425 transitions, 6258 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:28,960 INFO L231 Difference]: Finished difference. Result has 487 places, 408 transitions, 5530 flow [2024-06-04 14:12:28,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5530, PETRI_PLACES=487, PETRI_TRANSITIONS=408} [2024-06-04 14:12:28,961 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-04 14:12:28,961 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 408 transitions, 5530 flow [2024-06-04 14:12:28,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:28,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:28,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 14:12:28,962 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:28,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash 575906261, now seen corresponding path program 19 times [2024-06-04 14:12:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:28,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537441172] [2024-06-04 14:12:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:30,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:30,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537441172] [2024-06-04 14:12:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537441172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:30,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189734600] [2024-06-04 14:12:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:30,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:30,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:30,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 408 transitions, 5530 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:30,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:30,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:30,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:31,419 INFO L124 PetriNetUnfolderBase]: 1212/2172 cut-off events. [2024-06-04 14:12:31,420 INFO L125 PetriNetUnfolderBase]: For 223580/223580 co-relation queries the response was YES. [2024-06-04 14:12:31,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15435 conditions, 2172 events. 1212/2172 cut-off events. For 223580/223580 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 13231 event pairs, 427 based on Foata normal form. 2/2174 useless extension candidates. Maximal degree in co-relation 15211. Up to 2100 conditions per place. [2024-06-04 14:12:31,455 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 396 selfloop transitions, 25 changer transitions 0/423 dead transitions. [2024-06-04 14:12:31,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 423 transitions, 6416 flow [2024-06-04 14:12:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:12:31,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:12:31,457 INFO L175 Difference]: Start difference. First operand has 487 places, 408 transitions, 5530 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:12:31,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 423 transitions, 6416 flow [2024-06-04 14:12:32,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 423 transitions, 6195 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:32,715 INFO L231 Difference]: Finished difference. Result has 488 places, 408 transitions, 5365 flow [2024-06-04 14:12:32,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5365, PETRI_PLACES=488, PETRI_TRANSITIONS=408} [2024-06-04 14:12:32,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-04 14:12:32,716 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 408 transitions, 5365 flow [2024-06-04 14:12:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:32,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:32,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:32,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 14:12:32,717 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:32,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2019667349, now seen corresponding path program 33 times [2024-06-04 14:12:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:32,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840925115] [2024-06-04 14:12:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:32,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:33,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:33,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840925115] [2024-06-04 14:12:33,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840925115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:33,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:33,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:33,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776317577] [2024-06-04 14:12:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:33,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:33,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:33,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:33,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:34,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:34,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 408 transitions, 5365 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:34,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:34,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:34,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:34,876 INFO L124 PetriNetUnfolderBase]: 1216/2182 cut-off events. [2024-06-04 14:12:34,876 INFO L125 PetriNetUnfolderBase]: For 224295/224295 co-relation queries the response was YES. [2024-06-04 14:12:34,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15365 conditions, 2182 events. 1216/2182 cut-off events. For 224295/224295 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13287 event pairs, 230 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 15141. Up to 1976 conditions per place. [2024-06-04 14:12:34,910 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 369 selfloop transitions, 55 changer transitions 0/426 dead transitions. [2024-06-04 14:12:34,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 426 transitions, 6323 flow [2024-06-04 14:12:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:12:34,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:12:34,911 INFO L175 Difference]: Start difference. First operand has 488 places, 408 transitions, 5365 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:12:34,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 426 transitions, 6323 flow [2024-06-04 14:12:36,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 426 transitions, 6263 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:36,043 INFO L231 Difference]: Finished difference. Result has 487 places, 409 transitions, 5482 flow [2024-06-04 14:12:36,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5305, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5482, PETRI_PLACES=487, PETRI_TRANSITIONS=409} [2024-06-04 14:12:36,043 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-04 14:12:36,043 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 409 transitions, 5482 flow [2024-06-04 14:12:36,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:36,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:36,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:36,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 14:12:36,044 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:36,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1811802819, now seen corresponding path program 20 times [2024-06-04 14:12:36,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993960829] [2024-06-04 14:12:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:38,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:38,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993960829] [2024-06-04 14:12:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993960829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:38,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:38,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891891796] [2024-06-04 14:12:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:38,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:38,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:38,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:38,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 409 transitions, 5482 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:38,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:38,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:38,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:39,287 INFO L124 PetriNetUnfolderBase]: 1222/2192 cut-off events. [2024-06-04 14:12:39,287 INFO L125 PetriNetUnfolderBase]: For 229375/229375 co-relation queries the response was YES. [2024-06-04 14:12:39,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15610 conditions, 2192 events. 1222/2192 cut-off events. For 229375/229375 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13335 event pairs, 226 based on Foata normal form. 2/2194 useless extension candidates. Maximal degree in co-relation 15385. Up to 1966 conditions per place. [2024-06-04 14:12:39,322 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 62 changer transitions 0/430 dead transitions. [2024-06-04 14:12:39,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 430 transitions, 6494 flow [2024-06-04 14:12:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:12:39,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:12:39,323 INFO L175 Difference]: Start difference. First operand has 487 places, 409 transitions, 5482 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:12:39,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 430 transitions, 6494 flow [2024-06-04 14:12:40,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 430 transitions, 6329 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:40,585 INFO L231 Difference]: Finished difference. Result has 490 places, 411 transitions, 5547 flow [2024-06-04 14:12:40,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5317, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5547, PETRI_PLACES=490, PETRI_TRANSITIONS=411} [2024-06-04 14:12:40,585 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-04 14:12:40,585 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 411 transitions, 5547 flow [2024-06-04 14:12:40,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:40,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:40,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:40,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 14:12:40,586 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:40,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:40,586 INFO L85 PathProgramCache]: Analyzing trace with hash 341884357, now seen corresponding path program 21 times [2024-06-04 14:12:40,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:40,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637355938] [2024-06-04 14:12:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:42,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:42,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637355938] [2024-06-04 14:12:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637355938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:42,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:42,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626782706] [2024-06-04 14:12:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:42,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:42,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:42,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:42,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 411 transitions, 5547 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:42,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:42,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:42,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:43,244 INFO L124 PetriNetUnfolderBase]: 1218/2186 cut-off events. [2024-06-04 14:12:43,245 INFO L125 PetriNetUnfolderBase]: For 214029/214029 co-relation queries the response was YES. [2024-06-04 14:12:43,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15219 conditions, 2186 events. 1218/2186 cut-off events. For 214029/214029 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13296 event pairs, 213 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 14993. Up to 1832 conditions per place. [2024-06-04 14:12:43,271 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 342 selfloop transitions, 92 changer transitions 0/436 dead transitions. [2024-06-04 14:12:43,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 436 transitions, 6763 flow [2024-06-04 14:12:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:12:43,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-04 14:12:43,272 INFO L175 Difference]: Start difference. First operand has 490 places, 411 transitions, 5547 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:12:43,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 436 transitions, 6763 flow [2024-06-04 14:12:44,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 436 transitions, 6557 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:44,465 INFO L231 Difference]: Finished difference. Result has 493 places, 411 transitions, 5533 flow [2024-06-04 14:12:44,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5341, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5533, PETRI_PLACES=493, PETRI_TRANSITIONS=411} [2024-06-04 14:12:44,465 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-04 14:12:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 411 transitions, 5533 flow [2024-06-04 14:12:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:44,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:44,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:44,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 14:12:44,465 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:44,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2026347353, now seen corresponding path program 3 times [2024-06-04 14:12:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693074450] [2024-06-04 14:12:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693074450] [2024-06-04 14:12:46,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693074450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:46,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:46,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867588102] [2024-06-04 14:12:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:46,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:46,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:46,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 411 transitions, 5533 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:46,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:46,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:46,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:47,414 INFO L124 PetriNetUnfolderBase]: 1215/2181 cut-off events. [2024-06-04 14:12:47,414 INFO L125 PetriNetUnfolderBase]: For 198609/198609 co-relation queries the response was YES. [2024-06-04 14:12:47,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 2181 events. 1215/2181 cut-off events. For 198609/198609 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13356 event pairs, 301 based on Foata normal form. 2/2183 useless extension candidates. Maximal degree in co-relation 14708. Up to 2048 conditions per place. [2024-06-04 14:12:47,447 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 382 selfloop transitions, 43 changer transitions 0/427 dead transitions. [2024-06-04 14:12:47,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 427 transitions, 6437 flow [2024-06-04 14:12:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:12:47,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:12:47,448 INFO L175 Difference]: Start difference. First operand has 493 places, 411 transitions, 5533 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:12:47,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 427 transitions, 6437 flow [2024-06-04 14:12:48,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 427 transitions, 5834 flow, removed 47 selfloop flow, removed 14 redundant places. [2024-06-04 14:12:48,585 INFO L231 Difference]: Finished difference. Result has 490 places, 411 transitions, 5022 flow [2024-06-04 14:12:48,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5022, PETRI_PLACES=490, PETRI_TRANSITIONS=411} [2024-06-04 14:12:48,585 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-04 14:12:48,586 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 411 transitions, 5022 flow [2024-06-04 14:12:48,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:48,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:48,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 14:12:48,586 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:48,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:48,586 INFO L85 PathProgramCache]: Analyzing trace with hash -567124801, now seen corresponding path program 34 times [2024-06-04 14:12:48,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:48,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753925912] [2024-06-04 14:12:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:49,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753925912] [2024-06-04 14:12:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753925912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:49,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:49,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033839655] [2024-06-04 14:12:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:49,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:49,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:49,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 411 transitions, 5022 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:49,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:49,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:49,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:50,374 INFO L124 PetriNetUnfolderBase]: 1219/2187 cut-off events. [2024-06-04 14:12:50,374 INFO L125 PetriNetUnfolderBase]: For 200805/200805 co-relation queries the response was YES. [2024-06-04 14:12:50,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 2187 events. 1219/2187 cut-off events. For 200805/200805 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13361 event pairs, 433 based on Foata normal form. 2/2189 useless extension candidates. Maximal degree in co-relation 14000. Up to 2145 conditions per place. [2024-06-04 14:12:50,406 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 406 selfloop transitions, 16 changer transitions 0/424 dead transitions. [2024-06-04 14:12:50,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 424 transitions, 5960 flow [2024-06-04 14:12:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-04 14:12:50,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-04 14:12:50,407 INFO L175 Difference]: Start difference. First operand has 490 places, 411 transitions, 5022 flow. Second operand 10 states and 99 transitions. [2024-06-04 14:12:50,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 424 transitions, 5960 flow [2024-06-04 14:12:51,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 424 transitions, 5790 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:51,572 INFO L231 Difference]: Finished difference. Result has 489 places, 412 transitions, 4952 flow [2024-06-04 14:12:51,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4952, PETRI_PLACES=489, PETRI_TRANSITIONS=412} [2024-06-04 14:12:51,572 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 457 predicate places. [2024-06-04 14:12:51,573 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 412 transitions, 4952 flow [2024-06-04 14:12:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:51,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:51,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 14:12:51,573 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:51,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1848849599, now seen corresponding path program 35 times [2024-06-04 14:12:51,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:51,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36617751] [2024-06-04 14:12:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:51,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:52,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:52,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36617751] [2024-06-04 14:12:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36617751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:52,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:52,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655928340] [2024-06-04 14:12:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:52,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:52,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:52,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:52,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:52,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:52,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 412 transitions, 4952 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:52,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:52,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:52,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:53,499 INFO L124 PetriNetUnfolderBase]: 1216/2184 cut-off events. [2024-06-04 14:12:53,499 INFO L125 PetriNetUnfolderBase]: For 182827/182827 co-relation queries the response was YES. [2024-06-04 14:12:53,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13647 conditions, 2184 events. 1216/2184 cut-off events. For 182827/182827 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13336 event pairs, 231 based on Foata normal form. 2/2186 useless extension candidates. Maximal degree in co-relation 13424. Up to 2009 conditions per place. [2024-06-04 14:12:53,533 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 379 selfloop transitions, 46 changer transitions 0/427 dead transitions. [2024-06-04 14:12:53,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 427 transitions, 5840 flow [2024-06-04 14:12:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:12:53,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:12:53,534 INFO L175 Difference]: Start difference. First operand has 489 places, 412 transitions, 4952 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:12:53,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 427 transitions, 5840 flow [2024-06-04 14:12:54,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 427 transitions, 5735 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:54,668 INFO L231 Difference]: Finished difference. Result has 490 places, 412 transitions, 4943 flow [2024-06-04 14:12:54,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4847, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4943, PETRI_PLACES=490, PETRI_TRANSITIONS=412} [2024-06-04 14:12:54,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-04 14:12:54,669 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 412 transitions, 4943 flow [2024-06-04 14:12:54,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:54,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:54,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 14:12:54,670 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:54,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash -103574663, now seen corresponding path program 22 times [2024-06-04 14:12:54,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:54,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599462082] [2024-06-04 14:12:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:56,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599462082] [2024-06-04 14:12:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599462082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:56,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:56,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:56,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988764478] [2024-06-04 14:12:56,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:56,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:56,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:56,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:56,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:56,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 412 transitions, 4943 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:56,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:56,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:56,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:56,987 INFO L124 PetriNetUnfolderBase]: 1222/2194 cut-off events. [2024-06-04 14:12:56,987 INFO L125 PetriNetUnfolderBase]: For 181402/181402 co-relation queries the response was YES. [2024-06-04 14:12:57,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13650 conditions, 2194 events. 1222/2194 cut-off events. For 181402/181402 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13365 event pairs, 146 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 13427. Up to 1172 conditions per place. [2024-06-04 14:12:57,020 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 199 changer transitions 0/436 dead transitions. [2024-06-04 14:12:57,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 436 transitions, 6461 flow [2024-06-04 14:12:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 14:12:57,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-04 14:12:57,021 INFO L175 Difference]: Start difference. First operand has 490 places, 412 transitions, 4943 flow. Second operand 10 states and 128 transitions. [2024-06-04 14:12:57,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 436 transitions, 6461 flow [2024-06-04 14:12:58,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 436 transitions, 6169 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-04 14:12:58,139 INFO L231 Difference]: Finished difference. Result has 490 places, 414 transitions, 5100 flow [2024-06-04 14:12:58,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4651, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5100, PETRI_PLACES=490, PETRI_TRANSITIONS=414} [2024-06-04 14:12:58,139 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-04 14:12:58,139 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 414 transitions, 5100 flow [2024-06-04 14:12:58,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:58,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:58,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:58,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 14:12:58,140 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:58,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1853618143, now seen corresponding path program 23 times [2024-06-04 14:12:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478781757] [2024-06-04 14:12:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:58,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478781757] [2024-06-04 14:13:00,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478781757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:00,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:00,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063086831] [2024-06-04 14:13:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:00,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:00,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:00,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 414 transitions, 5100 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:00,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:00,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:00,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:01,328 INFO L124 PetriNetUnfolderBase]: 1218/2188 cut-off events. [2024-06-04 14:13:01,328 INFO L125 PetriNetUnfolderBase]: For 165266/165266 co-relation queries the response was YES. [2024-06-04 14:13:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13435 conditions, 2188 events. 1218/2188 cut-off events. For 165266/165266 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13339 event pairs, 237 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 13212. Up to 2003 conditions per place. [2024-06-04 14:13:01,360 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 378 selfloop transitions, 51 changer transitions 0/431 dead transitions. [2024-06-04 14:13:01,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 431 transitions, 6008 flow [2024-06-04 14:13:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:13:01,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:13:01,361 INFO L175 Difference]: Start difference. First operand has 490 places, 414 transitions, 5100 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:13:01,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 431 transitions, 6008 flow [2024-06-04 14:13:02,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 431 transitions, 5382 flow, removed 39 selfloop flow, removed 13 redundant places. [2024-06-04 14:13:02,367 INFO L231 Difference]: Finished difference. Result has 488 places, 414 transitions, 4581 flow [2024-06-04 14:13:02,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4474, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4581, PETRI_PLACES=488, PETRI_TRANSITIONS=414} [2024-06-04 14:13:02,367 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-04 14:13:02,367 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 414 transitions, 4581 flow [2024-06-04 14:13:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:02,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:02,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 14:13:02,368 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:02,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash -567117857, now seen corresponding path program 24 times [2024-06-04 14:13:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:02,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430728482] [2024-06-04 14:13:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:02,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430728482] [2024-06-04 14:13:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430728482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827961902] [2024-06-04 14:13:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:04,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:04,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 414 transitions, 4581 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:04,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:04,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:04,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:04,935 INFO L124 PetriNetUnfolderBase]: 1214/2182 cut-off events. [2024-06-04 14:13:04,936 INFO L125 PetriNetUnfolderBase]: For 139414/139414 co-relation queries the response was YES. [2024-06-04 14:13:04,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12197 conditions, 2182 events. 1214/2182 cut-off events. For 139414/139414 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13342 event pairs, 148 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 11979. Up to 1166 conditions per place. [2024-06-04 14:13:04,965 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 233 selfloop transitions, 200 changer transitions 0/435 dead transitions. [2024-06-04 14:13:04,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 435 transitions, 5779 flow [2024-06-04 14:13:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:13:04,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:13:04,966 INFO L175 Difference]: Start difference. First operand has 488 places, 414 transitions, 4581 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:13:04,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 435 transitions, 5779 flow [2024-06-04 14:13:05,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 435 transitions, 5627 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:05,770 INFO L231 Difference]: Finished difference. Result has 488 places, 414 transitions, 4834 flow [2024-06-04 14:13:05,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4834, PETRI_PLACES=488, PETRI_TRANSITIONS=414} [2024-06-04 14:13:05,771 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-04 14:13:05,771 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 414 transitions, 4834 flow [2024-06-04 14:13:05,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:05,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:05,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:05,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 14:13:05,771 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:05,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 931629106, now seen corresponding path program 1 times [2024-06-04 14:13:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507540416] [2024-06-04 14:13:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:07,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:07,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507540416] [2024-06-04 14:13:07,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507540416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:07,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:07,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004272091] [2024-06-04 14:13:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:07,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:07,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:07,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 414 transitions, 4834 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:07,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:07,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:07,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:08,223 INFO L124 PetriNetUnfolderBase]: 1218/2188 cut-off events. [2024-06-04 14:13:08,223 INFO L125 PetriNetUnfolderBase]: For 145843/145843 co-relation queries the response was YES. [2024-06-04 14:13:08,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 2188 events. 1218/2188 cut-off events. For 145843/145843 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13393 event pairs, 256 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 12415. Up to 2036 conditions per place. [2024-06-04 14:13:08,255 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 401 selfloop transitions, 38 changer transitions 0/441 dead transitions. [2024-06-04 14:13:08,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 441 transitions, 5810 flow [2024-06-04 14:13:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:13:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:13:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 143 transitions. [2024-06-04 14:13:08,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-06-04 14:13:08,256 INFO L175 Difference]: Start difference. First operand has 488 places, 414 transitions, 4834 flow. Second operand 14 states and 143 transitions. [2024-06-04 14:13:08,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 441 transitions, 5810 flow [2024-06-04 14:13:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 441 transitions, 5403 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:09,147 INFO L231 Difference]: Finished difference. Result has 492 places, 415 transitions, 4541 flow [2024-06-04 14:13:09,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4541, PETRI_PLACES=492, PETRI_TRANSITIONS=415} [2024-06-04 14:13:09,148 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-04 14:13:09,148 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 415 transitions, 4541 flow [2024-06-04 14:13:09,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:09,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:09,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:09,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 14:13:09,149 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:09,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash -320665222, now seen corresponding path program 2 times [2024-06-04 14:13:09,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:09,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848483819] [2024-06-04 14:13:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:09,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:10,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:10,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848483819] [2024-06-04 14:13:10,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848483819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:10,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283656017] [2024-06-04 14:13:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:10,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:10,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 415 transitions, 4541 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:10,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:10,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:10,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:11,513 INFO L124 PetriNetUnfolderBase]: 1222/2196 cut-off events. [2024-06-04 14:13:11,513 INFO L125 PetriNetUnfolderBase]: For 144039/144039 co-relation queries the response was YES. [2024-06-04 14:13:11,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 2196 events. 1222/2196 cut-off events. For 144039/144039 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13451 event pairs, 271 based on Foata normal form. 2/2198 useless extension candidates. Maximal degree in co-relation 12082. Up to 2053 conditions per place. [2024-06-04 14:13:11,544 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 392 selfloop transitions, 45 changer transitions 0/439 dead transitions. [2024-06-04 14:13:11,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 439 transitions, 5513 flow [2024-06-04 14:13:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-04 14:13:11,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.317016317016317 [2024-06-04 14:13:11,545 INFO L175 Difference]: Start difference. First operand has 492 places, 415 transitions, 4541 flow. Second operand 13 states and 136 transitions. [2024-06-04 14:13:11,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 439 transitions, 5513 flow [2024-06-04 14:13:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 439 transitions, 5409 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:12,390 INFO L231 Difference]: Finished difference. Result has 493 places, 416 transitions, 4568 flow [2024-06-04 14:13:12,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4568, PETRI_PLACES=493, PETRI_TRANSITIONS=416} [2024-06-04 14:13:12,391 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-04 14:13:12,391 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 416 transitions, 4568 flow [2024-06-04 14:13:12,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:12,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:12,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:12,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 14:13:12,391 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:12,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:12,391 INFO L85 PathProgramCache]: Analyzing trace with hash -293138152, now seen corresponding path program 3 times [2024-06-04 14:13:12,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:12,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60464275] [2024-06-04 14:13:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:13,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:13,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60464275] [2024-06-04 14:13:13,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60464275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:13,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:13,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360962229] [2024-06-04 14:13:13,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:13,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:13,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:13,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:13,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 416 transitions, 4568 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:13,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:13,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:13,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:14,774 INFO L124 PetriNetUnfolderBase]: 1226/2204 cut-off events. [2024-06-04 14:13:14,774 INFO L125 PetriNetUnfolderBase]: For 150012/150012 co-relation queries the response was YES. [2024-06-04 14:13:14,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12365 conditions, 2204 events. 1226/2204 cut-off events. For 150012/150012 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13505 event pairs, 270 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 12144. Up to 2045 conditions per place. [2024-06-04 14:13:14,805 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 393 selfloop transitions, 45 changer transitions 0/440 dead transitions. [2024-06-04 14:13:14,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 440 transitions, 5542 flow [2024-06-04 14:13:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-04 14:13:14,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-04 14:13:14,806 INFO L175 Difference]: Start difference. First operand has 493 places, 416 transitions, 4568 flow. Second operand 13 states and 137 transitions. [2024-06-04 14:13:14,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 440 transitions, 5542 flow [2024-06-04 14:13:15,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 440 transitions, 5423 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:15,660 INFO L231 Difference]: Finished difference. Result has 495 places, 417 transitions, 4581 flow [2024-06-04 14:13:15,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4581, PETRI_PLACES=495, PETRI_TRANSITIONS=417} [2024-06-04 14:13:15,660 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-04 14:13:15,660 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 417 transitions, 4581 flow [2024-06-04 14:13:15,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:15,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:15,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:15,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 14:13:15,660 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:15,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash -298471702, now seen corresponding path program 4 times [2024-06-04 14:13:15,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:15,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942874153] [2024-06-04 14:13:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:15,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:17,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942874153] [2024-06-04 14:13:17,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942874153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:17,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:17,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:17,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623665272] [2024-06-04 14:13:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:17,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:17,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:17,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:17,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 417 transitions, 4581 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:17,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:17,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:17,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:17,991 INFO L124 PetriNetUnfolderBase]: 1230/2212 cut-off events. [2024-06-04 14:13:17,991 INFO L125 PetriNetUnfolderBase]: For 152234/152234 co-relation queries the response was YES. [2024-06-04 14:13:18,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 2212 events. 1230/2212 cut-off events. For 152234/152234 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13594 event pairs, 279 based on Foata normal form. 2/2214 useless extension candidates. Maximal degree in co-relation 12198. Up to 2075 conditions per place. [2024-06-04 14:13:18,023 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 400 selfloop transitions, 39 changer transitions 0/441 dead transitions. [2024-06-04 14:13:18,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 441 transitions, 5557 flow [2024-06-04 14:13:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-04 14:13:18,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3123543123543124 [2024-06-04 14:13:18,024 INFO L175 Difference]: Start difference. First operand has 495 places, 417 transitions, 4581 flow. Second operand 13 states and 134 transitions. [2024-06-04 14:13:18,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 441 transitions, 5557 flow [2024-06-04 14:13:18,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 441 transitions, 5435 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:18,829 INFO L231 Difference]: Finished difference. Result has 497 places, 418 transitions, 4581 flow [2024-06-04 14:13:18,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4459, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4581, PETRI_PLACES=497, PETRI_TRANSITIONS=418} [2024-06-04 14:13:18,829 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-04 14:13:18,829 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 418 transitions, 4581 flow [2024-06-04 14:13:18,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:18,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:18,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:18,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 14:13:18,830 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:18,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1324078270, now seen corresponding path program 5 times [2024-06-04 14:13:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541951469] [2024-06-04 14:13:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:18,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541951469] [2024-06-04 14:13:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541951469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:20,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:20,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204285754] [2024-06-04 14:13:20,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:20,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:20,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:20,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 418 transitions, 4581 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:20,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:20,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:20,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:21,205 INFO L124 PetriNetUnfolderBase]: 1234/2220 cut-off events. [2024-06-04 14:13:21,205 INFO L125 PetriNetUnfolderBase]: For 154526/154526 co-relation queries the response was YES. [2024-06-04 14:13:21,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12459 conditions, 2220 events. 1234/2220 cut-off events. For 154526/154526 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13661 event pairs, 283 based on Foata normal form. 2/2222 useless extension candidates. Maximal degree in co-relation 12236. Up to 2086 conditions per place. [2024-06-04 14:13:21,236 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 404 selfloop transitions, 36 changer transitions 0/442 dead transitions. [2024-06-04 14:13:21,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 442 transitions, 5559 flow [2024-06-04 14:13:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-06-04 14:13:21,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31002331002331 [2024-06-04 14:13:21,237 INFO L175 Difference]: Start difference. First operand has 497 places, 418 transitions, 4581 flow. Second operand 13 states and 133 transitions. [2024-06-04 14:13:21,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 442 transitions, 5559 flow [2024-06-04 14:13:22,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 442 transitions, 5447 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:22,253 INFO L231 Difference]: Finished difference. Result has 499 places, 419 transitions, 4587 flow [2024-06-04 14:13:22,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4469, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4587, PETRI_PLACES=499, PETRI_TRANSITIONS=419} [2024-06-04 14:13:22,254 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-04 14:13:22,254 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 419 transitions, 4587 flow [2024-06-04 14:13:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:22,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:22,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:22,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 14:13:22,254 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:22,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:22,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1489240358, now seen corresponding path program 6 times [2024-06-04 14:13:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:22,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583334787] [2024-06-04 14:13:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:22,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:23,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583334787] [2024-06-04 14:13:23,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583334787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:23,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:23,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854588569] [2024-06-04 14:13:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:23,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:23,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 419 transitions, 4587 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:23,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:23,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:23,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:24,666 INFO L124 PetriNetUnfolderBase]: 1238/2228 cut-off events. [2024-06-04 14:13:24,666 INFO L125 PetriNetUnfolderBase]: For 156569/156569 co-relation queries the response was YES. [2024-06-04 14:13:24,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12506 conditions, 2228 events. 1238/2228 cut-off events. For 156569/156569 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13722 event pairs, 234 based on Foata normal form. 2/2230 useless extension candidates. Maximal degree in co-relation 12282. Up to 2001 conditions per place. [2024-06-04 14:13:24,699 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 399 selfloop transitions, 43 changer transitions 0/444 dead transitions. [2024-06-04 14:13:24,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 444 transitions, 5571 flow [2024-06-04 14:13:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-04 14:13:24,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30536130536130535 [2024-06-04 14:13:24,700 INFO L175 Difference]: Start difference. First operand has 499 places, 419 transitions, 4587 flow. Second operand 13 states and 131 transitions. [2024-06-04 14:13:24,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 444 transitions, 5571 flow [2024-06-04 14:13:25,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 444 transitions, 5463 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:25,775 INFO L231 Difference]: Finished difference. Result has 501 places, 420 transitions, 4613 flow [2024-06-04 14:13:25,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4479, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4613, PETRI_PLACES=501, PETRI_TRANSITIONS=420} [2024-06-04 14:13:25,776 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-04 14:13:25,776 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 420 transitions, 4613 flow [2024-06-04 14:13:25,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:25,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:25,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:25,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 14:13:25,776 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:25,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1691588497, now seen corresponding path program 1 times [2024-06-04 14:13:25,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:25,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309157054] [2024-06-04 14:13:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:25,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:27,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:27,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309157054] [2024-06-04 14:13:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309157054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:27,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:27,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290903197] [2024-06-04 14:13:27,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:27,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:28,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:28,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 420 transitions, 4613 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:28,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:28,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:28,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:28,900 INFO L124 PetriNetUnfolderBase]: 1241/2233 cut-off events. [2024-06-04 14:13:28,900 INFO L125 PetriNetUnfolderBase]: For 149537/149537 co-relation queries the response was YES. [2024-06-04 14:13:28,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12557 conditions, 2233 events. 1241/2233 cut-off events. For 149537/149537 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13738 event pairs, 282 based on Foata normal form. 1/2234 useless extension candidates. Maximal degree in co-relation 12332. Up to 2093 conditions per place. [2024-06-04 14:13:28,932 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 397 selfloop transitions, 46 changer transitions 0/445 dead transitions. [2024-06-04 14:13:28,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 445 transitions, 5633 flow [2024-06-04 14:13:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-04 14:13:28,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-04 14:13:28,933 INFO L175 Difference]: Start difference. First operand has 501 places, 420 transitions, 4613 flow. Second operand 13 states and 137 transitions. [2024-06-04 14:13:28,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 445 transitions, 5633 flow [2024-06-04 14:13:29,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 445 transitions, 5509 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:29,904 INFO L231 Difference]: Finished difference. Result has 503 places, 422 transitions, 4661 flow [2024-06-04 14:13:29,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4661, PETRI_PLACES=503, PETRI_TRANSITIONS=422} [2024-06-04 14:13:29,904 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-04 14:13:29,904 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 422 transitions, 4661 flow [2024-06-04 14:13:29,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:29,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:29,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:29,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 14:13:29,904 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:29,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1491718574, now seen corresponding path program 1 times [2024-06-04 14:13:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901790568] [2024-06-04 14:13:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901790568] [2024-06-04 14:13:31,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901790568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:31,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:31,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283743793] [2024-06-04 14:13:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:31,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:31,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:31,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:31,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 422 transitions, 4661 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:31,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:31,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:31,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:32,790 INFO L124 PetriNetUnfolderBase]: 1261/2277 cut-off events. [2024-06-04 14:13:32,790 INFO L125 PetriNetUnfolderBase]: For 233486/233486 co-relation queries the response was YES. [2024-06-04 14:13:32,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12688 conditions, 2277 events. 1261/2277 cut-off events. For 233486/233486 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14103 event pairs, 291 based on Foata normal form. 10/2287 useless extension candidates. Maximal degree in co-relation 12462. Up to 2100 conditions per place. [2024-06-04 14:13:32,822 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 402 selfloop transitions, 32 changer transitions 16/452 dead transitions. [2024-06-04 14:13:32,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 452 transitions, 5689 flow [2024-06-04 14:13:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:13:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:13:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 149 transitions. [2024-06-04 14:13:32,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225108225108225 [2024-06-04 14:13:32,823 INFO L175 Difference]: Start difference. First operand has 503 places, 422 transitions, 4661 flow. Second operand 14 states and 149 transitions. [2024-06-04 14:13:32,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 452 transitions, 5689 flow [2024-06-04 14:13:33,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 452 transitions, 5559 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:33,969 INFO L231 Difference]: Finished difference. Result has 506 places, 417 transitions, 4511 flow [2024-06-04 14:13:33,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4531, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4511, PETRI_PLACES=506, PETRI_TRANSITIONS=417} [2024-06-04 14:13:33,970 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-04 14:13:33,970 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 417 transitions, 4511 flow [2024-06-04 14:13:33,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:33,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:33,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:33,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 14:13:33,970 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:33,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1278390442, now seen corresponding path program 7 times [2024-06-04 14:13:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:33,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532927709] [2024-06-04 14:13:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:33,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:35,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:35,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532927709] [2024-06-04 14:13:35,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532927709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:35,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:35,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162643805] [2024-06-04 14:13:35,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:35,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:35,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:35,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 417 transitions, 4511 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:35,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:35,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:35,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:36,486 INFO L124 PetriNetUnfolderBase]: 1229/2217 cut-off events. [2024-06-04 14:13:36,486 INFO L125 PetriNetUnfolderBase]: For 162714/162714 co-relation queries the response was YES. [2024-06-04 14:13:36,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12371 conditions, 2217 events. 1229/2217 cut-off events. For 162714/162714 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13646 event pairs, 251 based on Foata normal form. 2/2219 useless extension candidates. Maximal degree in co-relation 12144. Up to 2092 conditions per place. [2024-06-04 14:13:36,514 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 401 selfloop transitions, 37 changer transitions 0/440 dead transitions. [2024-06-04 14:13:36,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 440 transitions, 5495 flow [2024-06-04 14:13:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 14:13:36,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-04 14:13:36,515 INFO L175 Difference]: Start difference. First operand has 506 places, 417 transitions, 4511 flow. Second operand 12 states and 129 transitions. [2024-06-04 14:13:36,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 440 transitions, 5495 flow [2024-06-04 14:13:37,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 440 transitions, 5409 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:37,553 INFO L231 Difference]: Finished difference. Result has 502 places, 418 transitions, 4550 flow [2024-06-04 14:13:37,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4425, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4550, PETRI_PLACES=502, PETRI_TRANSITIONS=418} [2024-06-04 14:13:37,553 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-04 14:13:37,553 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 418 transitions, 4550 flow [2024-06-04 14:13:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:37,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:37,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:37,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 14:13:37,554 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:37,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1287535100, now seen corresponding path program 8 times [2024-06-04 14:13:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764999141] [2024-06-04 14:13:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:37,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:39,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:39,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764999141] [2024-06-04 14:13:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764999141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:39,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409029102] [2024-06-04 14:13:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:39,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:39,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:39,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:39,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 418 transitions, 4550 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:39,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:39,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:39,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:40,452 INFO L124 PetriNetUnfolderBase]: 1233/2225 cut-off events. [2024-06-04 14:13:40,452 INFO L125 PetriNetUnfolderBase]: For 164172/164172 co-relation queries the response was YES. [2024-06-04 14:13:40,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12470 conditions, 2225 events. 1233/2225 cut-off events. For 164172/164172 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13707 event pairs, 251 based on Foata normal form. 2/2227 useless extension candidates. Maximal degree in co-relation 12243. Up to 2103 conditions per place. [2024-06-04 14:13:40,484 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 405 selfloop transitions, 34 changer transitions 0/441 dead transitions. [2024-06-04 14:13:40,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 441 transitions, 5536 flow [2024-06-04 14:13:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 14:13:40,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:13:40,485 INFO L175 Difference]: Start difference. First operand has 502 places, 418 transitions, 4550 flow. Second operand 12 states and 128 transitions. [2024-06-04 14:13:40,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 441 transitions, 5536 flow [2024-06-04 14:13:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 441 transitions, 5401 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:41,469 INFO L231 Difference]: Finished difference. Result has 502 places, 419 transitions, 4535 flow [2024-06-04 14:13:41,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4535, PETRI_PLACES=502, PETRI_TRANSITIONS=419} [2024-06-04 14:13:41,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-04 14:13:41,470 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 419 transitions, 4535 flow [2024-06-04 14:13:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:41,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:41,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:41,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 14:13:41,470 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:41,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1278240712, now seen corresponding path program 9 times [2024-06-04 14:13:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648445112] [2024-06-04 14:13:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:41,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:43,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:43,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648445112] [2024-06-04 14:13:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648445112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:43,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772016531] [2024-06-04 14:13:43,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:43,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:43,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:43,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 419 transitions, 4535 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:43,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:43,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:43,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:44,111 INFO L124 PetriNetUnfolderBase]: 1237/2233 cut-off events. [2024-06-04 14:13:44,111 INFO L125 PetriNetUnfolderBase]: For 161690/161690 co-relation queries the response was YES. [2024-06-04 14:13:44,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12449 conditions, 2233 events. 1237/2233 cut-off events. For 161690/161690 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13776 event pairs, 251 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 12223. Up to 2114 conditions per place. [2024-06-04 14:13:44,144 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 409 selfloop transitions, 31 changer transitions 0/442 dead transitions. [2024-06-04 14:13:44,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 442 transitions, 5521 flow [2024-06-04 14:13:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:13:44,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-04 14:13:44,144 INFO L175 Difference]: Start difference. First operand has 502 places, 419 transitions, 4535 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:13:44,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 442 transitions, 5521 flow [2024-06-04 14:13:45,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 442 transitions, 5413 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:45,153 INFO L231 Difference]: Finished difference. Result has 504 places, 420 transitions, 4541 flow [2024-06-04 14:13:45,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4541, PETRI_PLACES=504, PETRI_TRANSITIONS=420} [2024-06-04 14:13:45,153 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:13:45,153 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 420 transitions, 4541 flow [2024-06-04 14:13:45,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:45,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:45,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:45,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 14:13:45,154 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:45,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2031435240, now seen corresponding path program 10 times [2024-06-04 14:13:45,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:45,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398735688] [2024-06-04 14:13:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:46,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:46,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398735688] [2024-06-04 14:13:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398735688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:46,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301290633] [2024-06-04 14:13:46,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:46,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:46,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:46,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:46,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:46,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 420 transitions, 4541 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:46,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:46,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:46,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:47,684 INFO L124 PetriNetUnfolderBase]: 1241/2241 cut-off events. [2024-06-04 14:13:47,684 INFO L125 PetriNetUnfolderBase]: For 164176/164176 co-relation queries the response was YES. [2024-06-04 14:13:47,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 2241 events. 1241/2241 cut-off events. For 164176/164176 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13870 event pairs, 251 based on Foata normal form. 2/2243 useless extension candidates. Maximal degree in co-relation 12269. Up to 2125 conditions per place. [2024-06-04 14:13:47,716 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 413 selfloop transitions, 28 changer transitions 0/443 dead transitions. [2024-06-04 14:13:47,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 443 transitions, 5529 flow [2024-06-04 14:13:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 14:13:47,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 14:13:47,717 INFO L175 Difference]: Start difference. First operand has 504 places, 420 transitions, 4541 flow. Second operand 12 states and 126 transitions. [2024-06-04 14:13:47,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 443 transitions, 5529 flow [2024-06-04 14:13:48,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 443 transitions, 5425 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:48,775 INFO L231 Difference]: Finished difference. Result has 506 places, 421 transitions, 4547 flow [2024-06-04 14:13:48,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4547, PETRI_PLACES=506, PETRI_TRANSITIONS=421} [2024-06-04 14:13:48,775 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-04 14:13:48,775 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 421 transitions, 4547 flow [2024-06-04 14:13:48,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:48,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:48,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 14:13:48,776 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:48,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1202847176, now seen corresponding path program 11 times [2024-06-04 14:13:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:48,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872515050] [2024-06-04 14:13:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:50,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872515050] [2024-06-04 14:13:50,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872515050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:50,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:50,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:50,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201625495] [2024-06-04 14:13:50,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:50,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:50,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:50,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:50,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:50,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:50,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 421 transitions, 4547 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:50,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:50,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:51,312 INFO L124 PetriNetUnfolderBase]: 1245/2249 cut-off events. [2024-06-04 14:13:51,312 INFO L125 PetriNetUnfolderBase]: For 166713/166713 co-relation queries the response was YES. [2024-06-04 14:13:51,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12543 conditions, 2249 events. 1245/2249 cut-off events. For 166713/166713 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13924 event pairs, 247 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 12315. Up to 2115 conditions per place. [2024-06-04 14:13:51,344 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 415 selfloop transitions, 30 changer transitions 0/447 dead transitions. [2024-06-04 14:13:51,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 447 transitions, 5553 flow [2024-06-04 14:13:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-04 14:13:51,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.317016317016317 [2024-06-04 14:13:51,345 INFO L175 Difference]: Start difference. First operand has 506 places, 421 transitions, 4547 flow. Second operand 13 states and 136 transitions. [2024-06-04 14:13:51,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 447 transitions, 5553 flow [2024-06-04 14:13:52,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 447 transitions, 5453 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:52,404 INFO L231 Difference]: Finished difference. Result has 509 places, 422 transitions, 4563 flow [2024-06-04 14:13:52,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4447, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4563, PETRI_PLACES=509, PETRI_TRANSITIONS=422} [2024-06-04 14:13:52,404 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-04 14:13:52,404 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 422 transitions, 4563 flow [2024-06-04 14:13:52,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:52,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:52,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 14:13:52,404 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:52,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash 418921483, now seen corresponding path program 2 times [2024-06-04 14:13:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:52,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21465773] [2024-06-04 14:13:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:54,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:54,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21465773] [2024-06-04 14:13:54,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21465773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:54,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:54,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481388715] [2024-06-04 14:13:54,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:54,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:54,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:54,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:54,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:54,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:54,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 422 transitions, 4563 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:54,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:54,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:54,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:55,381 INFO L124 PetriNetUnfolderBase]: 1243/2246 cut-off events. [2024-06-04 14:13:55,382 INFO L125 PetriNetUnfolderBase]: For 147987/147987 co-relation queries the response was YES. [2024-06-04 14:13:55,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12311 conditions, 2246 events. 1243/2246 cut-off events. For 147987/147987 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13883 event pairs, 257 based on Foata normal form. 1/2247 useless extension candidates. Maximal degree in co-relation 12082. Up to 2118 conditions per place. [2024-06-04 14:13:55,416 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 402 selfloop transitions, 40 changer transitions 0/444 dead transitions. [2024-06-04 14:13:55,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 444 transitions, 5513 flow [2024-06-04 14:13:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:13:55,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:13:55,417 INFO L175 Difference]: Start difference. First operand has 509 places, 422 transitions, 4563 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:13:55,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 444 transitions, 5513 flow [2024-06-04 14:13:56,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 444 transitions, 5387 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:56,507 INFO L231 Difference]: Finished difference. Result has 510 places, 422 transitions, 4525 flow [2024-06-04 14:13:56,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4525, PETRI_PLACES=510, PETRI_TRANSITIONS=422} [2024-06-04 14:13:56,507 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-04 14:13:56,507 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 422 transitions, 4525 flow [2024-06-04 14:13:56,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:56,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:56,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:56,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 14:13:56,507 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:56,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:56,508 INFO L85 PathProgramCache]: Analyzing trace with hash 563021542, now seen corresponding path program 2 times [2024-06-04 14:13:56,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:56,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042699575] [2024-06-04 14:13:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042699575] [2024-06-04 14:13:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042699575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:58,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328441209] [2024-06-04 14:13:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:58,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:58,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 422 transitions, 4525 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:58,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:58,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:58,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:59,358 INFO L124 PetriNetUnfolderBase]: 1259/2282 cut-off events. [2024-06-04 14:13:59,358 INFO L125 PetriNetUnfolderBase]: For 237248/237248 co-relation queries the response was YES. [2024-06-04 14:13:59,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12399 conditions, 2282 events. 1259/2282 cut-off events. For 237248/237248 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14146 event pairs, 261 based on Foata normal form. 10/2292 useless extension candidates. Maximal degree in co-relation 12169. Up to 2127 conditions per place. [2024-06-04 14:13:59,391 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 409 selfloop transitions, 28 changer transitions 11/450 dead transitions. [2024-06-04 14:13:59,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 450 transitions, 5543 flow [2024-06-04 14:13:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:13:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:13:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-04 14:13:59,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32867132867132864 [2024-06-04 14:13:59,392 INFO L175 Difference]: Start difference. First operand has 510 places, 422 transitions, 4525 flow. Second operand 13 states and 141 transitions. [2024-06-04 14:13:59,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 450 transitions, 5543 flow [2024-06-04 14:14:00,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 450 transitions, 5378 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:00,469 INFO L231 Difference]: Finished difference. Result has 511 places, 419 transitions, 4372 flow [2024-06-04 14:14:00,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4372, PETRI_PLACES=511, PETRI_TRANSITIONS=419} [2024-06-04 14:14:00,470 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-04 14:14:00,470 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 419 transitions, 4372 flow [2024-06-04 14:14:00,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:00,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:00,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:00,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 14:14:00,470 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:00,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash -369937158, now seen corresponding path program 12 times [2024-06-04 14:14:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146485761] [2024-06-04 14:14:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:02,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146485761] [2024-06-04 14:14:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146485761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:02,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:02,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537298055] [2024-06-04 14:14:02,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:02,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:02,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:02,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:02,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:02,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 419 transitions, 4372 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:02,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:02,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:02,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:03,192 INFO L124 PetriNetUnfolderBase]: 1237/2240 cut-off events. [2024-06-04 14:14:03,192 INFO L125 PetriNetUnfolderBase]: For 161837/161837 co-relation queries the response was YES. [2024-06-04 14:14:03,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12171 conditions, 2240 events. 1237/2240 cut-off events. For 161837/161837 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13875 event pairs, 240 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 11940. Up to 2059 conditions per place. [2024-06-04 14:14:03,222 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 52 changer transitions 0/441 dead transitions. [2024-06-04 14:14:03,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 441 transitions, 5362 flow [2024-06-04 14:14:03,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:14:03,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:14:03,223 INFO L175 Difference]: Start difference. First operand has 511 places, 419 transitions, 4372 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:14:03,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 441 transitions, 5362 flow [2024-06-04 14:14:04,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 441 transitions, 5281 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:04,249 INFO L231 Difference]: Finished difference. Result has 508 places, 420 transitions, 4453 flow [2024-06-04 14:14:04,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4291, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4453, PETRI_PLACES=508, PETRI_TRANSITIONS=420} [2024-06-04 14:14:04,250 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-04 14:14:04,250 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 420 transitions, 4453 flow [2024-06-04 14:14:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:04,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:04,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:04,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 14:14:04,250 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:04,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash -369942738, now seen corresponding path program 13 times [2024-06-04 14:14:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:04,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241388945] [2024-06-04 14:14:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:05,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241388945] [2024-06-04 14:14:05,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241388945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:05,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:05,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:05,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120983888] [2024-06-04 14:14:05,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:05,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:05,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:05,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:05,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 420 transitions, 4453 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:05,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:05,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:05,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:06,733 INFO L124 PetriNetUnfolderBase]: 1241/2248 cut-off events. [2024-06-04 14:14:06,733 INFO L125 PetriNetUnfolderBase]: For 159118/159118 co-relation queries the response was YES. [2024-06-04 14:14:06,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12305 conditions, 2248 events. 1241/2248 cut-off events. For 159118/159118 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13928 event pairs, 238 based on Foata normal form. 2/2250 useless extension candidates. Maximal degree in co-relation 12075. Up to 2053 conditions per place. [2024-06-04 14:14:06,765 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 53 changer transitions 0/442 dead transitions. [2024-06-04 14:14:06,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 442 transitions, 5445 flow [2024-06-04 14:14:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:14:06,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:14:06,766 INFO L175 Difference]: Start difference. First operand has 508 places, 420 transitions, 4453 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:14:06,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 442 transitions, 5445 flow [2024-06-04 14:14:07,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 442 transitions, 5280 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:07,803 INFO L231 Difference]: Finished difference. Result has 508 places, 421 transitions, 4454 flow [2024-06-04 14:14:07,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4288, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4454, PETRI_PLACES=508, PETRI_TRANSITIONS=421} [2024-06-04 14:14:07,804 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-04 14:14:07,804 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 421 transitions, 4454 flow [2024-06-04 14:14:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:07,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:07,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:07,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 14:14:07,804 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:07,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash 280439760, now seen corresponding path program 14 times [2024-06-04 14:14:07,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:07,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069956701] [2024-06-04 14:14:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:09,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069956701] [2024-06-04 14:14:09,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069956701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:09,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:09,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:09,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253267576] [2024-06-04 14:14:09,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:09,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:09,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:09,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:09,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:09,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:09,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 421 transitions, 4454 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:09,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:09,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:09,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:10,596 INFO L124 PetriNetUnfolderBase]: 1245/2256 cut-off events. [2024-06-04 14:14:10,596 INFO L125 PetriNetUnfolderBase]: For 159475/159475 co-relation queries the response was YES. [2024-06-04 14:14:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 2256 events. 1245/2256 cut-off events. For 159475/159475 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14009 event pairs, 220 based on Foata normal form. 2/2258 useless extension candidates. Maximal degree in co-relation 12097. Up to 1920 conditions per place. [2024-06-04 14:14:10,630 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 357 selfloop transitions, 89 changer transitions 0/448 dead transitions. [2024-06-04 14:14:10,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 448 transitions, 5484 flow [2024-06-04 14:14:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:14:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:14:10,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-04 14:14:10,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34265734265734266 [2024-06-04 14:14:10,631 INFO L175 Difference]: Start difference. First operand has 508 places, 421 transitions, 4454 flow. Second operand 13 states and 147 transitions. [2024-06-04 14:14:10,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 448 transitions, 5484 flow [2024-06-04 14:14:11,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 448 transitions, 5328 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:11,667 INFO L231 Difference]: Finished difference. Result has 511 places, 422 transitions, 4538 flow [2024-06-04 14:14:11,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4538, PETRI_PLACES=511, PETRI_TRANSITIONS=422} [2024-06-04 14:14:11,667 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-04 14:14:11,667 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 422 transitions, 4538 flow [2024-06-04 14:14:11,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:11,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:11,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:11,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 14:14:11,668 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:11,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash -370086888, now seen corresponding path program 15 times [2024-06-04 14:14:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063950096] [2024-06-04 14:14:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:13,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:13,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063950096] [2024-06-04 14:14:13,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063950096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:13,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440967831] [2024-06-04 14:14:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:13,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:13,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:13,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:13,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 422 transitions, 4538 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:13,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:13,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:13,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:14,096 INFO L124 PetriNetUnfolderBase]: 1249/2264 cut-off events. [2024-06-04 14:14:14,096 INFO L125 PetriNetUnfolderBase]: For 162162/162162 co-relation queries the response was YES. [2024-06-04 14:14:14,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12468 conditions, 2264 events. 1249/2264 cut-off events. For 162162/162162 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14108 event pairs, 240 based on Foata normal form. 2/2266 useless extension candidates. Maximal degree in co-relation 12238. Up to 2083 conditions per place. [2024-06-04 14:14:14,131 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 392 selfloop transitions, 50 changer transitions 0/444 dead transitions. [2024-06-04 14:14:14,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 444 transitions, 5536 flow [2024-06-04 14:14:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:14,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:14:14,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:14:14,133 INFO L175 Difference]: Start difference. First operand has 511 places, 422 transitions, 4538 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:14:14,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 444 transitions, 5536 flow [2024-06-04 14:14:15,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 444 transitions, 5312 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:15,217 INFO L231 Difference]: Finished difference. Result has 513 places, 423 transitions, 4478 flow [2024-06-04 14:14:15,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4478, PETRI_PLACES=513, PETRI_TRANSITIONS=423} [2024-06-04 14:14:15,217 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-04 14:14:15,217 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 423 transitions, 4478 flow [2024-06-04 14:14:15,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:15,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:15,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:15,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 14:14:15,218 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:15,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash -919394714, now seen corresponding path program 16 times [2024-06-04 14:14:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:15,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548058280] [2024-06-04 14:14:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:15,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:16,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:16,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548058280] [2024-06-04 14:14:16,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548058280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:16,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434465787] [2024-06-04 14:14:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:16,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:16,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:16,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 423 transitions, 4478 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:16,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:16,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:17,473 INFO L124 PetriNetUnfolderBase]: 1253/2272 cut-off events. [2024-06-04 14:14:17,473 INFO L125 PetriNetUnfolderBase]: For 164200/164200 co-relation queries the response was YES. [2024-06-04 14:14:17,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12428 conditions, 2272 events. 1253/2272 cut-off events. For 164200/164200 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 14171 event pairs, 240 based on Foata normal form. 2/2274 useless extension candidates. Maximal degree in co-relation 12197. Up to 2091 conditions per place. [2024-06-04 14:14:17,507 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 394 selfloop transitions, 49 changer transitions 0/445 dead transitions. [2024-06-04 14:14:17,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 445 transitions, 5478 flow [2024-06-04 14:14:17,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 14:14:17,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-04 14:14:17,508 INFO L175 Difference]: Start difference. First operand has 513 places, 423 transitions, 4478 flow. Second operand 12 states and 129 transitions. [2024-06-04 14:14:17,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 445 transitions, 5478 flow [2024-06-04 14:14:18,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 445 transitions, 5324 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:18,484 INFO L231 Difference]: Finished difference. Result has 515 places, 424 transitions, 4488 flow [2024-06-04 14:14:18,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4488, PETRI_PLACES=515, PETRI_TRANSITIONS=424} [2024-06-04 14:14:18,484 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-04 14:14:18,484 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 424 transitions, 4488 flow [2024-06-04 14:14:18,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:18,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:18,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:18,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 14:14:18,485 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:18,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:18,485 INFO L85 PathProgramCache]: Analyzing trace with hash 280434180, now seen corresponding path program 17 times [2024-06-04 14:14:18,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:18,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535831583] [2024-06-04 14:14:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:18,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:20,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:20,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535831583] [2024-06-04 14:14:20,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535831583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:20,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:20,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491012385] [2024-06-04 14:14:20,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:20,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:20,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:20,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:20,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:20,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 424 transitions, 4488 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:20,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:20,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:20,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:21,734 INFO L124 PetriNetUnfolderBase]: 1293/2352 cut-off events. [2024-06-04 14:14:21,735 INFO L125 PetriNetUnfolderBase]: For 291504/291504 co-relation queries the response was YES. [2024-06-04 14:14:21,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14674 conditions, 2352 events. 1293/2352 cut-off events. For 291504/291504 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 14693 event pairs, 242 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 14442. Up to 1875 conditions per place. [2024-06-04 14:14:21,769 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 356 selfloop transitions, 97 changer transitions 0/455 dead transitions. [2024-06-04 14:14:21,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 455 transitions, 5936 flow [2024-06-04 14:14:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:14:21,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-04 14:14:21,770 INFO L175 Difference]: Start difference. First operand has 515 places, 424 transitions, 4488 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:14:21,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 455 transitions, 5936 flow [2024-06-04 14:14:23,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 455 transitions, 5782 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:23,240 INFO L231 Difference]: Finished difference. Result has 517 places, 426 transitions, 4658 flow [2024-06-04 14:14:23,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4658, PETRI_PLACES=517, PETRI_TRANSITIONS=426} [2024-06-04 14:14:23,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-04 14:14:23,240 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 426 transitions, 4658 flow [2024-06-04 14:14:23,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:23,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:23,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:23,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 14:14:23,240 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:23,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash -225836882, now seen corresponding path program 3 times [2024-06-04 14:14:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:23,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366834168] [2024-06-04 14:14:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:24,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:24,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366834168] [2024-06-04 14:14:24,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366834168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:24,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:24,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:24,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427806831] [2024-06-04 14:14:24,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:24,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:24,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:24,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:25,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:25,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 426 transitions, 4658 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:25,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:25,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:25,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:26,096 INFO L124 PetriNetUnfolderBase]: 1309/2388 cut-off events. [2024-06-04 14:14:26,096 INFO L125 PetriNetUnfolderBase]: For 376649/376649 co-relation queries the response was YES. [2024-06-04 14:14:26,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14878 conditions, 2388 events. 1309/2388 cut-off events. For 376649/376649 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14946 event pairs, 272 based on Foata normal form. 10/2398 useless extension candidates. Maximal degree in co-relation 14645. Up to 2163 conditions per place. [2024-06-04 14:14:26,132 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 390 selfloop transitions, 50 changer transitions 11/453 dead transitions. [2024-06-04 14:14:26,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 453 transitions, 5678 flow [2024-06-04 14:14:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:14:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:14:26,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-04 14:14:26,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3356643356643357 [2024-06-04 14:14:26,133 INFO L175 Difference]: Start difference. First operand has 517 places, 426 transitions, 4658 flow. Second operand 13 states and 144 transitions. [2024-06-04 14:14:26,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 453 transitions, 5678 flow [2024-06-04 14:14:28,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 453 transitions, 5492 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 14:14:28,037 INFO L231 Difference]: Finished difference. Result has 522 places, 423 transitions, 4538 flow [2024-06-04 14:14:28,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4472, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4538, PETRI_PLACES=522, PETRI_TRANSITIONS=423} [2024-06-04 14:14:28,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 490 predicate places. [2024-06-04 14:14:28,037 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 423 transitions, 4538 flow [2024-06-04 14:14:28,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:28,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:28,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:28,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 14:14:28,037 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:28,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash 833524316, now seen corresponding path program 18 times [2024-06-04 14:14:28,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:28,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186756803] [2024-06-04 14:14:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:28,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:29,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:29,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186756803] [2024-06-04 14:14:29,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186756803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:29,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:29,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859306769] [2024-06-04 14:14:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:29,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:29,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:29,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:29,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 423 transitions, 4538 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:29,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:29,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:29,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:30,713 INFO L124 PetriNetUnfolderBase]: 1304/2389 cut-off events. [2024-06-04 14:14:30,713 INFO L125 PetriNetUnfolderBase]: For 440488/440488 co-relation queries the response was YES. [2024-06-04 14:14:30,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14426 conditions, 2389 events. 1304/2389 cut-off events. For 440488/440488 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14987 event pairs, 255 based on Foata normal form. 18/2407 useless extension candidates. Maximal degree in co-relation 14191. Up to 1995 conditions per place. [2024-06-04 14:14:30,748 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 351 selfloop transitions, 84 changer transitions 17/454 dead transitions. [2024-06-04 14:14:30,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 454 transitions, 5582 flow [2024-06-04 14:14:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:14:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:14:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-04 14:14:30,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-04 14:14:30,749 INFO L175 Difference]: Start difference. First operand has 522 places, 423 transitions, 4538 flow. Second operand 13 states and 151 transitions. [2024-06-04 14:14:30,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 454 transitions, 5582 flow [2024-06-04 14:14:32,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 454 transitions, 5476 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:32,712 INFO L231 Difference]: Finished difference. Result has 521 places, 416 transitions, 4463 flow [2024-06-04 14:14:32,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4432, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4463, PETRI_PLACES=521, PETRI_TRANSITIONS=416} [2024-06-04 14:14:32,712 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 489 predicate places. [2024-06-04 14:14:32,712 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 416 transitions, 4463 flow [2024-06-04 14:14:32,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:32,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:32,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:32,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 14:14:32,712 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:32,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash 826382412, now seen corresponding path program 4 times [2024-06-04 14:14:32,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:32,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541985400] [2024-06-04 14:14:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:32,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:34,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541985400] [2024-06-04 14:14:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541985400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:34,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:34,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940289520] [2024-06-04 14:14:34,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:34,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:34,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:34,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 416 transitions, 4463 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:34,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:34,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:34,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:35,323 INFO L124 PetriNetUnfolderBase]: 1276/2337 cut-off events. [2024-06-04 14:14:35,323 INFO L125 PetriNetUnfolderBase]: For 355940/355940 co-relation queries the response was YES. [2024-06-04 14:14:35,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14160 conditions, 2337 events. 1276/2337 cut-off events. For 355940/355940 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14617 event pairs, 249 based on Foata normal form. 10/2347 useless extension candidates. Maximal degree in co-relation 13925. Up to 2016 conditions per place. [2024-06-04 14:14:35,357 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 359 selfloop transitions, 76 changer transitions 9/446 dead transitions. [2024-06-04 14:14:35,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 446 transitions, 5485 flow [2024-06-04 14:14:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:14:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:14:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-04 14:14:35,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473193473193473 [2024-06-04 14:14:35,358 INFO L175 Difference]: Start difference. First operand has 521 places, 416 transitions, 4463 flow. Second operand 13 states and 149 transitions. [2024-06-04 14:14:35,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 446 transitions, 5485 flow [2024-06-04 14:14:36,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 446 transitions, 5289 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 14:14:36,835 INFO L231 Difference]: Finished difference. Result has 517 places, 413 transitions, 4390 flow [2024-06-04 14:14:36,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4390, PETRI_PLACES=517, PETRI_TRANSITIONS=413} [2024-06-04 14:14:36,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-04 14:14:36,836 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 413 transitions, 4390 flow [2024-06-04 14:14:36,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:36,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:36,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:36,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 14:14:36,837 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:36,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 833791722, now seen corresponding path program 5 times [2024-06-04 14:14:36,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:36,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608015072] [2024-06-04 14:14:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:38,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608015072] [2024-06-04 14:14:38,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608015072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:38,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:38,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:38,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579449955] [2024-06-04 14:14:38,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:38,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:38,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 413 transitions, 4390 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:38,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:38,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:38,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:39,781 INFO L124 PetriNetUnfolderBase]: 1237/2264 cut-off events. [2024-06-04 14:14:39,781 INFO L125 PetriNetUnfolderBase]: For 248163/248163 co-relation queries the response was YES. [2024-06-04 14:14:39,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12288 conditions, 2264 events. 1237/2264 cut-off events. For 248163/248163 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14144 event pairs, 230 based on Foata normal form. 10/2274 useless extension candidates. Maximal degree in co-relation 12054. Up to 1883 conditions per place. [2024-06-04 14:14:39,815 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 342 selfloop transitions, 86 changer transitions 12/442 dead transitions. [2024-06-04 14:14:39,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 442 transitions, 5404 flow [2024-06-04 14:14:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 14:14:39,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-04 14:14:39,816 INFO L175 Difference]: Start difference. First operand has 517 places, 413 transitions, 4390 flow. Second operand 12 states and 142 transitions. [2024-06-04 14:14:39,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 442 transitions, 5404 flow [2024-06-04 14:14:40,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 442 transitions, 5240 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:14:40,819 INFO L231 Difference]: Finished difference. Result has 514 places, 409 transitions, 4350 flow [2024-06-04 14:14:40,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4350, PETRI_PLACES=514, PETRI_TRANSITIONS=409} [2024-06-04 14:14:40,819 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-04 14:14:40,819 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 409 transitions, 4350 flow [2024-06-04 14:14:40,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:40,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:40,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:40,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 14:14:40,820 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:40,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash 833801022, now seen corresponding path program 6 times [2024-06-04 14:14:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568536841] [2024-06-04 14:14:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:40,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:42,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:42,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568536841] [2024-06-04 14:14:42,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568536841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:42,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:42,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670902985] [2024-06-04 14:14:42,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:42,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:42,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:42,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:42,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:42,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 409 transitions, 4350 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:42,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:42,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:42,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:43,862 INFO L124 PetriNetUnfolderBase]: 1259/2314 cut-off events. [2024-06-04 14:14:43,863 INFO L125 PetriNetUnfolderBase]: For 352345/352345 co-relation queries the response was YES. [2024-06-04 14:14:43,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14366 conditions, 2314 events. 1259/2314 cut-off events. For 352345/352345 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14485 event pairs, 240 based on Foata normal form. 8/2322 useless extension candidates. Maximal degree in co-relation 14133. Up to 1817 conditions per place. [2024-06-04 14:14:43,891 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 340 selfloop transitions, 87 changer transitions 15/444 dead transitions. [2024-06-04 14:14:43,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 444 transitions, 5768 flow [2024-06-04 14:14:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:14:43,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-04 14:14:43,892 INFO L175 Difference]: Start difference. First operand has 514 places, 409 transitions, 4350 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:14:43,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 444 transitions, 5768 flow [2024-06-04 14:14:45,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 444 transitions, 5588 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:45,410 INFO L231 Difference]: Finished difference. Result has 514 places, 402 transitions, 4308 flow [2024-06-04 14:14:45,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4308, PETRI_PLACES=514, PETRI_TRANSITIONS=402} [2024-06-04 14:14:45,411 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-04 14:14:45,411 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 402 transitions, 4308 flow [2024-06-04 14:14:45,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:45,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:45,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:45,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 14:14:45,411 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:45,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash 626870876, now seen corresponding path program 19 times [2024-06-04 14:14:45,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:45,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422871038] [2024-06-04 14:14:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:45,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:47,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:47,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422871038] [2024-06-04 14:14:47,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422871038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:47,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:47,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:47,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201656427] [2024-06-04 14:14:47,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:47,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:47,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:47,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:47,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:47,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 402 transitions, 4308 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:47,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:47,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:47,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:48,145 INFO L124 PetriNetUnfolderBase]: 1216/2229 cut-off events. [2024-06-04 14:14:48,145 INFO L125 PetriNetUnfolderBase]: For 271189/271189 co-relation queries the response was YES. [2024-06-04 14:14:48,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13589 conditions, 2229 events. 1216/2229 cut-off events. For 271189/271189 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13825 event pairs, 241 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 13371. Up to 2007 conditions per place. [2024-06-04 14:14:48,179 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 359 selfloop transitions, 64 changer transitions 0/425 dead transitions. [2024-06-04 14:14:48,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 425 transitions, 5224 flow [2024-06-04 14:14:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:14:48,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-04 14:14:48,180 INFO L175 Difference]: Start difference. First operand has 514 places, 402 transitions, 4308 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:14:48,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 425 transitions, 5224 flow [2024-06-04 14:14:49,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 425 transitions, 5018 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-06-04 14:14:49,615 INFO L231 Difference]: Finished difference. Result has 504 places, 402 transitions, 4234 flow [2024-06-04 14:14:49,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4234, PETRI_PLACES=504, PETRI_TRANSITIONS=402} [2024-06-04 14:14:49,616 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:14:49,616 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 402 transitions, 4234 flow [2024-06-04 14:14:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:49,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:49,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:49,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 14:14:49,617 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:49,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash 626865296, now seen corresponding path program 20 times [2024-06-04 14:14:49,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:49,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404715351] [2024-06-04 14:14:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:49,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404715351] [2024-06-04 14:14:51,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404715351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:51,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:51,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:51,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272097346] [2024-06-04 14:14:51,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:51,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:51,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:51,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:51,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 402 transitions, 4234 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:51,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:51,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:51,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:52,200 INFO L124 PetriNetUnfolderBase]: 1220/2237 cut-off events. [2024-06-04 14:14:52,200 INFO L125 PetriNetUnfolderBase]: For 261915/261915 co-relation queries the response was YES. [2024-06-04 14:14:52,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13564 conditions, 2237 events. 1220/2237 cut-off events. For 261915/261915 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13883 event pairs, 241 based on Foata normal form. 2/2239 useless extension candidates. Maximal degree in co-relation 13351. Up to 2015 conditions per place. [2024-06-04 14:14:52,233 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 361 selfloop transitions, 63 changer transitions 0/426 dead transitions. [2024-06-04 14:14:52,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 426 transitions, 5212 flow [2024-06-04 14:14:52,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:52,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:14:52,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:14:52,234 INFO L175 Difference]: Start difference. First operand has 504 places, 402 transitions, 4234 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:14:52,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 426 transitions, 5212 flow [2024-06-04 14:14:53,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 426 transitions, 5011 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:53,832 INFO L231 Difference]: Finished difference. Result has 505 places, 403 transitions, 4227 flow [2024-06-04 14:14:53,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4227, PETRI_PLACES=505, PETRI_TRANSITIONS=403} [2024-06-04 14:14:53,833 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-04 14:14:53,833 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 403 transitions, 4227 flow [2024-06-04 14:14:53,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:53,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:53,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:53,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 14:14:53,833 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:53,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash 626721146, now seen corresponding path program 21 times [2024-06-04 14:14:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:53,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093818861] [2024-06-04 14:14:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:53,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093818861] [2024-06-04 14:14:55,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093818861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:55,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:55,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:55,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219882654] [2024-06-04 14:14:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:55,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:55,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:55,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:55,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 403 transitions, 4227 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:55,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:55,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:55,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:56,285 INFO L124 PetriNetUnfolderBase]: 1224/2245 cut-off events. [2024-06-04 14:14:56,285 INFO L125 PetriNetUnfolderBase]: For 265558/265558 co-relation queries the response was YES. [2024-06-04 14:14:56,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13596 conditions, 2245 events. 1224/2245 cut-off events. For 265558/265558 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13932 event pairs, 239 based on Foata normal form. 2/2247 useless extension candidates. Maximal degree in co-relation 13382. Up to 2023 conditions per place. [2024-06-04 14:14:56,318 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 62 changer transitions 0/427 dead transitions. [2024-06-04 14:14:56,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 427 transitions, 5207 flow [2024-06-04 14:14:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:14:56,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:14:56,319 INFO L175 Difference]: Start difference. First operand has 505 places, 403 transitions, 4227 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:14:56,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 427 transitions, 5207 flow [2024-06-04 14:14:57,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 427 transitions, 5023 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:58,002 INFO L231 Difference]: Finished difference. Result has 507 places, 404 transitions, 4237 flow [2024-06-04 14:14:58,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4237, PETRI_PLACES=507, PETRI_TRANSITIONS=404} [2024-06-04 14:14:58,003 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-04 14:14:58,003 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 404 transitions, 4237 flow [2024-06-04 14:14:58,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:58,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:58,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:58,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 14:14:58,003 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:58,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash 632443002, now seen corresponding path program 7 times [2024-06-04 14:14:58,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:58,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504535604] [2024-06-04 14:14:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:58,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504535604] [2024-06-04 14:14:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504535604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:59,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239346107] [2024-06-04 14:14:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:00,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:00,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 404 transitions, 4237 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:00,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:00,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:00,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:00,916 INFO L124 PetriNetUnfolderBase]: 1241/2288 cut-off events. [2024-06-04 14:15:00,916 INFO L125 PetriNetUnfolderBase]: For 391105/391105 co-relation queries the response was YES. [2024-06-04 14:15:00,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13410 conditions, 2288 events. 1241/2288 cut-off events. For 391105/391105 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14269 event pairs, 252 based on Foata normal form. 16/2304 useless extension candidates. Maximal degree in co-relation 13195. Up to 1992 conditions per place. [2024-06-04 14:15:00,950 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 355 selfloop transitions, 60 changer transitions 16/433 dead transitions. [2024-06-04 14:15:00,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 433 transitions, 5227 flow [2024-06-04 14:15:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:15:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:15:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-04 14:15:00,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34265734265734266 [2024-06-04 14:15:00,951 INFO L175 Difference]: Start difference. First operand has 507 places, 404 transitions, 4237 flow. Second operand 13 states and 147 transitions. [2024-06-04 14:15:00,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 433 transitions, 5227 flow [2024-06-04 14:15:02,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 433 transitions, 5043 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-04 14:15:02,513 INFO L231 Difference]: Finished difference. Result has 510 places, 398 transitions, 4107 flow [2024-06-04 14:15:02,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4107, PETRI_PLACES=510, PETRI_TRANSITIONS=398} [2024-06-04 14:15:02,513 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-04 14:15:02,513 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 398 transitions, 4107 flow [2024-06-04 14:15:02,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:02,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:02,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:02,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 14:15:02,514 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:02,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -879084374, now seen corresponding path program 22 times [2024-06-04 14:15:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:02,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008542822] [2024-06-04 14:15:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008542822] [2024-06-04 14:15:03,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008542822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:03,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:03,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:03,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391414650] [2024-06-04 14:15:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:03,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:03,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:04,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:04,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 398 transitions, 4107 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:04,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:04,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:04,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:04,874 INFO L124 PetriNetUnfolderBase]: 1201/2208 cut-off events. [2024-06-04 14:15:04,875 INFO L125 PetriNetUnfolderBase]: For 249915/249915 co-relation queries the response was YES. [2024-06-04 14:15:04,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13056 conditions, 2208 events. 1201/2208 cut-off events. For 249915/249915 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13701 event pairs, 306 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 12840. Up to 1993 conditions per place. [2024-06-04 14:15:04,907 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 350 selfloop transitions, 66 changer transitions 0/418 dead transitions. [2024-06-04 14:15:04,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 418 transitions, 5057 flow [2024-06-04 14:15:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:15:04,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:15:04,908 INFO L175 Difference]: Start difference. First operand has 510 places, 398 transitions, 4107 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:15:04,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 418 transitions, 5057 flow [2024-06-04 14:15:06,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 418 transitions, 4921 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 14:15:06,286 INFO L231 Difference]: Finished difference. Result has 504 places, 399 transitions, 4181 flow [2024-06-04 14:15:06,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4181, PETRI_PLACES=504, PETRI_TRANSITIONS=399} [2024-06-04 14:15:06,286 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:15:06,286 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 399 transitions, 4181 flow [2024-06-04 14:15:06,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:06,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:06,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:06,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-04 14:15:06,287 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:06,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:06,287 INFO L85 PathProgramCache]: Analyzing trace with hash 897874314, now seen corresponding path program 23 times [2024-06-04 14:15:06,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:06,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283264901] [2024-06-04 14:15:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:06,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283264901] [2024-06-04 14:15:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283264901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:07,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:07,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648685057] [2024-06-04 14:15:07,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:07,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:07,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:07,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:08,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:08,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 399 transitions, 4181 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:08,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:08,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:08,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:08,921 INFO L124 PetriNetUnfolderBase]: 1205/2216 cut-off events. [2024-06-04 14:15:08,922 INFO L125 PetriNetUnfolderBase]: For 248918/248918 co-relation queries the response was YES. [2024-06-04 14:15:08,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13202 conditions, 2216 events. 1205/2216 cut-off events. For 248918/248918 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13764 event pairs, 299 based on Foata normal form. 2/2218 useless extension candidates. Maximal degree in co-relation 12987. Up to 1953 conditions per place. [2024-06-04 14:15:08,954 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 350 selfloop transitions, 67 changer transitions 0/419 dead transitions. [2024-06-04 14:15:08,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 419 transitions, 5133 flow [2024-06-04 14:15:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:15:08,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:15:08,955 INFO L175 Difference]: Start difference. First operand has 504 places, 399 transitions, 4181 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:15:08,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 419 transitions, 5133 flow [2024-06-04 14:15:10,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 419 transitions, 4929 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-04 14:15:10,624 INFO L231 Difference]: Finished difference. Result has 505 places, 400 transitions, 4189 flow [2024-06-04 14:15:10,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4189, PETRI_PLACES=505, PETRI_TRANSITIONS=400} [2024-06-04 14:15:10,625 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-04 14:15:10,625 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 400 transitions, 4189 flow [2024-06-04 14:15:10,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:10,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:10,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:10,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-04 14:15:10,625 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:10,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash -879234104, now seen corresponding path program 24 times [2024-06-04 14:15:10,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:10,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019530345] [2024-06-04 14:15:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019530345] [2024-06-04 14:15:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019530345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877587005] [2024-06-04 14:15:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:12,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:12,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:12,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 400 transitions, 4189 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:12,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:12,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:12,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:13,177 INFO L124 PetriNetUnfolderBase]: 1209/2224 cut-off events. [2024-06-04 14:15:13,178 INFO L125 PetriNetUnfolderBase]: For 241935/241935 co-relation queries the response was YES. [2024-06-04 14:15:13,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13177 conditions, 2224 events. 1209/2224 cut-off events. For 241935/241935 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13838 event pairs, 298 based on Foata normal form. 2/2226 useless extension candidates. Maximal degree in co-relation 12962. Up to 2017 conditions per place. [2024-06-04 14:15:13,210 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 366 selfloop transitions, 52 changer transitions 0/420 dead transitions. [2024-06-04 14:15:13,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 420 transitions, 5137 flow [2024-06-04 14:15:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:15:13,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:15:13,211 INFO L175 Difference]: Start difference. First operand has 505 places, 400 transitions, 4189 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:15:13,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 420 transitions, 5137 flow [2024-06-04 14:15:14,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 420 transitions, 4932 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-04 14:15:14,547 INFO L231 Difference]: Finished difference. Result has 505 places, 401 transitions, 4162 flow [2024-06-04 14:15:14,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3988, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4162, PETRI_PLACES=505, PETRI_TRANSITIONS=401} [2024-06-04 14:15:14,548 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-04 14:15:14,548 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 401 transitions, 4162 flow [2024-06-04 14:15:14,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:14,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:14,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:14,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-04 14:15:14,548 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:14,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash -882809024, now seen corresponding path program 25 times [2024-06-04 14:15:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:14,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062076480] [2024-06-04 14:15:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:14,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:15,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:15,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062076480] [2024-06-04 14:15:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062076480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:15,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:15,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:15:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156202123] [2024-06-04 14:15:15,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:15,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:15:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:15:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:15:15,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:15,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 401 transitions, 4162 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:15,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:15,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:15,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:16,787 INFO L124 PetriNetUnfolderBase]: 1213/2232 cut-off events. [2024-06-04 14:15:16,788 INFO L125 PetriNetUnfolderBase]: For 238220/238220 co-relation queries the response was YES. [2024-06-04 14:15:16,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 2232 events. 1213/2232 cut-off events. For 238220/238220 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13907 event pairs, 296 based on Foata normal form. 2/2234 useless extension candidates. Maximal degree in co-relation 12927. Up to 2034 conditions per place. [2024-06-04 14:15:16,822 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 376 selfloop transitions, 43 changer transitions 0/421 dead transitions. [2024-06-04 14:15:16,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 421 transitions, 5108 flow [2024-06-04 14:15:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 14:15:16,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-04 14:15:16,823 INFO L175 Difference]: Start difference. First operand has 505 places, 401 transitions, 4162 flow. Second operand 11 states and 114 transitions. [2024-06-04 14:15:16,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 421 transitions, 5108 flow [2024-06-04 14:15:18,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 421 transitions, 4944 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:18,189 INFO L231 Difference]: Finished difference. Result has 507 places, 402 transitions, 4156 flow [2024-06-04 14:15:18,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4156, PETRI_PLACES=507, PETRI_TRANSITIONS=402} [2024-06-04 14:15:18,190 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-04 14:15:18,190 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 402 transitions, 4156 flow [2024-06-04 14:15:18,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:18,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:18,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-04 14:15:18,190 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1611292322, now seen corresponding path program 26 times [2024-06-04 14:15:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722737789] [2024-06-04 14:15:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722737789] [2024-06-04 14:15:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722737789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275404755] [2024-06-04 14:15:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:19,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:19,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:19,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:19,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:19,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:19,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 402 transitions, 4156 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:19,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:19,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:19,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:20,840 INFO L124 PetriNetUnfolderBase]: 1217/2240 cut-off events. [2024-06-04 14:15:20,840 INFO L125 PetriNetUnfolderBase]: For 234864/234864 co-relation queries the response was YES. [2024-06-04 14:15:20,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13137 conditions, 2240 events. 1217/2240 cut-off events. For 234864/234864 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13981 event pairs, 240 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 12922. Up to 1941 conditions per place. [2024-06-04 14:15:20,875 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 368 selfloop transitions, 54 changer transitions 0/424 dead transitions. [2024-06-04 14:15:20,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 424 transitions, 5110 flow [2024-06-04 14:15:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:15:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:15:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-04 14:15:20,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30808080808080807 [2024-06-04 14:15:20,876 INFO L175 Difference]: Start difference. First operand has 507 places, 402 transitions, 4156 flow. Second operand 12 states and 122 transitions. [2024-06-04 14:15:20,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 424 transitions, 5110 flow [2024-06-04 14:15:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 424 transitions, 4966 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:22,408 INFO L231 Difference]: Finished difference. Result has 510 places, 403 transitions, 4192 flow [2024-06-04 14:15:22,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4192, PETRI_PLACES=510, PETRI_TRANSITIONS=403} [2024-06-04 14:15:22,408 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-04 14:15:22,408 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 403 transitions, 4192 flow [2024-06-04 14:15:22,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:22,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:22,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-04 14:15:22,409 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:22,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash 971466688, now seen corresponding path program 8 times [2024-06-04 14:15:22,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:22,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192171934] [2024-06-04 14:15:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:24,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:24,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192171934] [2024-06-04 14:15:24,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192171934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:24,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:24,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:24,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44847558] [2024-06-04 14:15:24,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:24,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:24,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 403 transitions, 4192 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:24,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:24,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:24,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:25,117 INFO L124 PetriNetUnfolderBase]: 1233/2276 cut-off events. [2024-06-04 14:15:25,117 INFO L125 PetriNetUnfolderBase]: For 305246/305246 co-relation queries the response was YES. [2024-06-04 14:15:25,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13227 conditions, 2276 events. 1233/2276 cut-off events. For 305246/305246 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 14231 event pairs, 323 based on Foata normal form. 10/2286 useless extension candidates. Maximal degree in co-relation 13011. Up to 2069 conditions per place. [2024-06-04 14:15:25,150 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 374 selfloop transitions, 41 changer transitions 11/428 dead transitions. [2024-06-04 14:15:25,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 428 transitions, 5152 flow [2024-06-04 14:15:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:15:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:15:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 14:15:25,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-04 14:15:25,151 INFO L175 Difference]: Start difference. First operand has 510 places, 403 transitions, 4192 flow. Second operand 12 states and 129 transitions. [2024-06-04 14:15:25,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 428 transitions, 5152 flow [2024-06-04 14:15:26,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 428 transitions, 4992 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-04 14:15:26,639 INFO L231 Difference]: Finished difference. Result has 512 places, 400 transitions, 4084 flow [2024-06-04 14:15:26,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4084, PETRI_PLACES=512, PETRI_TRANSITIONS=400} [2024-06-04 14:15:26,639 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-04 14:15:26,639 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 400 transitions, 4084 flow [2024-06-04 14:15:26,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:26,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:26,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-04 14:15:26,640 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:26,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash 38410935, now seen corresponding path program 3 times [2024-06-04 14:15:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:26,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932305911] [2024-06-04 14:15:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:28,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:28,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932305911] [2024-06-04 14:15:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932305911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:28,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:28,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703192603] [2024-06-04 14:15:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:28,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:28,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 400 transitions, 4084 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:28,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:28,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:28,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:29,121 INFO L124 PetriNetUnfolderBase]: 1205/2223 cut-off events. [2024-06-04 14:15:29,121 INFO L125 PetriNetUnfolderBase]: For 202308/202308 co-relation queries the response was YES. [2024-06-04 14:15:29,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 2223 events. 1205/2223 cut-off events. For 202308/202308 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13854 event pairs, 311 based on Foata normal form. 1/2224 useless extension candidates. Maximal degree in co-relation 12407. Up to 2021 conditions per place. [2024-06-04 14:15:29,154 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 348 selfloop transitions, 68 changer transitions 0/418 dead transitions. [2024-06-04 14:15:29,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 418 transitions, 4966 flow [2024-06-04 14:15:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:15:29,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:15:29,158 INFO L175 Difference]: Start difference. First operand has 512 places, 400 transitions, 4084 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:15:29,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 418 transitions, 4966 flow [2024-06-04 14:15:30,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 418 transitions, 4850 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-04 14:15:30,409 INFO L231 Difference]: Finished difference. Result has 509 places, 400 transitions, 4115 flow [2024-06-04 14:15:30,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4115, PETRI_PLACES=509, PETRI_TRANSITIONS=400} [2024-06-04 14:15:30,409 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-04 14:15:30,409 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 400 transitions, 4115 flow [2024-06-04 14:15:30,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:30,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:30,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:30,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-04 14:15:30,410 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:30,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash 489583116, now seen corresponding path program 27 times [2024-06-04 14:15:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996470186] [2024-06-04 14:15:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:30,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:31,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996470186] [2024-06-04 14:15:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996470186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030490039] [2024-06-04 14:15:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:31,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:31,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:32,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:32,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 400 transitions, 4115 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:32,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:32,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:32,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:32,862 INFO L124 PetriNetUnfolderBase]: 1209/2231 cut-off events. [2024-06-04 14:15:32,862 INFO L125 PetriNetUnfolderBase]: For 212798/212798 co-relation queries the response was YES. [2024-06-04 14:15:32,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12755 conditions, 2231 events. 1209/2231 cut-off events. For 212798/212798 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13897 event pairs, 239 based on Foata normal form. 2/2233 useless extension candidates. Maximal degree in co-relation 12539. Up to 1963 conditions per place. [2024-06-04 14:15:32,895 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 77 changer transitions 0/421 dead transitions. [2024-06-04 14:15:32,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 421 transitions, 5065 flow [2024-06-04 14:15:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:15:32,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:15:32,896 INFO L175 Difference]: Start difference. First operand has 509 places, 400 transitions, 4115 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:15:32,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 421 transitions, 5065 flow [2024-06-04 14:15:34,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 421 transitions, 4777 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-04 14:15:34,069 INFO L231 Difference]: Finished difference. Result has 506 places, 401 transitions, 4039 flow [2024-06-04 14:15:34,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4039, PETRI_PLACES=506, PETRI_TRANSITIONS=401} [2024-06-04 14:15:34,069 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-04 14:15:34,069 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 401 transitions, 4039 flow [2024-06-04 14:15:34,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:34,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:34,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:34,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-04 14:15:34,069 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:34,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash -45652266, now seen corresponding path program 28 times [2024-06-04 14:15:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:34,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615682672] [2024-06-04 14:15:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:34,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615682672] [2024-06-04 14:15:35,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615682672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511901956] [2024-06-04 14:15:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:35,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:35,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:35,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:35,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 401 transitions, 4039 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:35,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:35,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:35,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:36,682 INFO L124 PetriNetUnfolderBase]: 1213/2239 cut-off events. [2024-06-04 14:15:36,682 INFO L125 PetriNetUnfolderBase]: For 208775/208775 co-relation queries the response was YES. [2024-06-04 14:15:36,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 2239 events. 1213/2239 cut-off events. For 208775/208775 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13995 event pairs, 235 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 12529. Up to 1957 conditions per place. [2024-06-04 14:15:36,714 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 78 changer transitions 0/422 dead transitions. [2024-06-04 14:15:36,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 422 transitions, 4991 flow [2024-06-04 14:15:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:15:36,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:15:36,715 INFO L175 Difference]: Start difference. First operand has 506 places, 401 transitions, 4039 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:15:36,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 422 transitions, 4991 flow [2024-06-04 14:15:37,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 422 transitions, 4789 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:37,909 INFO L231 Difference]: Finished difference. Result has 508 places, 402 transitions, 4055 flow [2024-06-04 14:15:37,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3837, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=508, PETRI_TRANSITIONS=402} [2024-06-04 14:15:37,909 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-04 14:15:37,909 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 402 transitions, 4055 flow [2024-06-04 14:15:37,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:37,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:37,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:37,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-04 14:15:37,910 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:37,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -507224918, now seen corresponding path program 29 times [2024-06-04 14:15:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70258587] [2024-06-04 14:15:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:39,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70258587] [2024-06-04 14:15:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70258587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:39,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113304857] [2024-06-04 14:15:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:39,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:39,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:39,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:39,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 402 transitions, 4055 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:39,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:39,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:39,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:40,548 INFO L124 PetriNetUnfolderBase]: 1217/2247 cut-off events. [2024-06-04 14:15:40,548 INFO L125 PetriNetUnfolderBase]: For 211989/211989 co-relation queries the response was YES. [2024-06-04 14:15:40,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12811 conditions, 2247 events. 1217/2247 cut-off events. For 211989/211989 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 14066 event pairs, 261 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 12595. Up to 2036 conditions per place. [2024-06-04 14:15:40,574 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 359 selfloop transitions, 60 changer transitions 0/421 dead transitions. [2024-06-04 14:15:40,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 421 transitions, 4999 flow [2024-06-04 14:15:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:15:40,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:15:40,575 INFO L175 Difference]: Start difference. First operand has 508 places, 402 transitions, 4055 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:15:40,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 421 transitions, 4999 flow [2024-06-04 14:15:41,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 421 transitions, 4791 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:41,723 INFO L231 Difference]: Finished difference. Result has 510 places, 403 transitions, 4031 flow [2024-06-04 14:15:41,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4031, PETRI_PLACES=510, PETRI_TRANSITIONS=403} [2024-06-04 14:15:41,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-04 14:15:41,723 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 403 transitions, 4031 flow [2024-06-04 14:15:41,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:41,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:41,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:41,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-04 14:15:41,724 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:41,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1042460300, now seen corresponding path program 30 times [2024-06-04 14:15:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:41,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627593148] [2024-06-04 14:15:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:43,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:43,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627593148] [2024-06-04 14:15:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627593148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:43,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:43,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:43,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441694227] [2024-06-04 14:15:43,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:43,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:43,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:43,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:43,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:43,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 403 transitions, 4031 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:43,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:43,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:43,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:44,460 INFO L124 PetriNetUnfolderBase]: 1221/2255 cut-off events. [2024-06-04 14:15:44,460 INFO L125 PetriNetUnfolderBase]: For 211988/211988 co-relation queries the response was YES. [2024-06-04 14:15:44,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12798 conditions, 2255 events. 1221/2255 cut-off events. For 211988/211988 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14084 event pairs, 259 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 12581. Up to 2016 conditions per place. [2024-06-04 14:15:44,494 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 358 selfloop transitions, 62 changer transitions 0/422 dead transitions. [2024-06-04 14:15:44,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 422 transitions, 4975 flow [2024-06-04 14:15:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:15:44,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:15:44,495 INFO L175 Difference]: Start difference. First operand has 510 places, 403 transitions, 4031 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:15:44,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 422 transitions, 4975 flow [2024-06-04 14:15:45,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 422 transitions, 4805 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:45,798 INFO L231 Difference]: Finished difference. Result has 512 places, 404 transitions, 4049 flow [2024-06-04 14:15:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3863, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4049, PETRI_PLACES=512, PETRI_TRANSITIONS=404} [2024-06-04 14:15:45,799 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-04 14:15:45,799 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 404 transitions, 4049 flow [2024-06-04 14:15:45,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:45,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:45,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:45,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-04 14:15:45,799 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1042604450, now seen corresponding path program 31 times [2024-06-04 14:15:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725661308] [2024-06-04 14:15:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:47,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725661308] [2024-06-04 14:15:47,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725661308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:47,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:47,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:15:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172068496] [2024-06-04 14:15:47,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:47,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:15:47,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:47,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:15:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:15:47,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:47,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 404 transitions, 4049 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:47,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:47,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:47,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:47,986 INFO L124 PetriNetUnfolderBase]: 1225/2263 cut-off events. [2024-06-04 14:15:47,986 INFO L125 PetriNetUnfolderBase]: For 212020/212020 co-relation queries the response was YES. [2024-06-04 14:15:48,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12843 conditions, 2263 events. 1225/2263 cut-off events. For 212020/212020 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 14205 event pairs, 257 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 12625. Up to 2052 conditions per place. [2024-06-04 14:15:48,020 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 364 selfloop transitions, 57 changer transitions 0/423 dead transitions. [2024-06-04 14:15:48,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 423 transitions, 4993 flow [2024-06-04 14:15:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:15:48,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:15:48,021 INFO L175 Difference]: Start difference. First operand has 512 places, 404 transitions, 4049 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:15:48,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 423 transitions, 4993 flow [2024-06-04 14:15:49,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 423 transitions, 4813 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-04 14:15:49,402 INFO L231 Difference]: Finished difference. Result has 513 places, 405 transitions, 4047 flow [2024-06-04 14:15:49,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4047, PETRI_PLACES=513, PETRI_TRANSITIONS=405} [2024-06-04 14:15:49,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-04 14:15:49,402 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 405 transitions, 4047 flow [2024-06-04 14:15:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:49,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:49,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:49,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-04 14:15:49,403 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:49,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash -510949568, now seen corresponding path program 32 times [2024-06-04 14:15:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:49,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444081433] [2024-06-04 14:15:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:49,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:50,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:50,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444081433] [2024-06-04 14:15:50,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444081433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:50,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:50,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:50,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702191602] [2024-06-04 14:15:50,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:50,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:50,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:50,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 405 transitions, 4047 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:50,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:50,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:50,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:51,743 INFO L124 PetriNetUnfolderBase]: 1229/2271 cut-off events. [2024-06-04 14:15:51,744 INFO L125 PetriNetUnfolderBase]: For 211970/211970 co-relation queries the response was YES. [2024-06-04 14:15:51,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12859 conditions, 2271 events. 1229/2271 cut-off events. For 211970/211970 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14237 event pairs, 255 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 12641. Up to 2060 conditions per place. [2024-06-04 14:15:51,777 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 367 selfloop transitions, 55 changer transitions 0/424 dead transitions. [2024-06-04 14:15:51,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 424 transitions, 4991 flow [2024-06-04 14:15:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:15:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:15:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:15:51,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:15:51,778 INFO L175 Difference]: Start difference. First operand has 513 places, 405 transitions, 4047 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:15:51,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 424 transitions, 4991 flow [2024-06-04 14:15:53,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 424 transitions, 4825 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:53,196 INFO L231 Difference]: Finished difference. Result has 515 places, 406 transitions, 4055 flow [2024-06-04 14:15:53,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=515, PETRI_TRANSITIONS=406} [2024-06-04 14:15:53,196 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-04 14:15:53,196 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 406 transitions, 4055 flow [2024-06-04 14:15:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:53,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:53,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:53,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-04 14:15:53,196 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:53,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash -898354444, now seen corresponding path program 9 times [2024-06-04 14:15:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:53,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531341563] [2024-06-04 14:15:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:55,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:55,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531341563] [2024-06-04 14:15:55,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531341563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:55,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:55,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917454495] [2024-06-04 14:15:55,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:55,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:55,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:55,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:55,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:55,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 406 transitions, 4055 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:55,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:55,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:55,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:15:56,743 INFO L124 PetriNetUnfolderBase]: 1245/2307 cut-off events. [2024-06-04 14:15:56,743 INFO L125 PetriNetUnfolderBase]: For 286291/286291 co-relation queries the response was YES. [2024-06-04 14:15:56,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12924 conditions, 2307 events. 1245/2307 cut-off events. For 286291/286291 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14557 event pairs, 273 based on Foata normal form. 10/2317 useless extension candidates. Maximal degree in co-relation 12705. Up to 2038 conditions per place. [2024-06-04 14:15:56,776 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 356 selfloop transitions, 53 changer transitions 19/430 dead transitions. [2024-06-04 14:15:56,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 430 transitions, 5017 flow [2024-06-04 14:15:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:15:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:15:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:15:56,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:15:56,777 INFO L175 Difference]: Start difference. First operand has 515 places, 406 transitions, 4055 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:15:56,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 430 transitions, 5017 flow [2024-06-04 14:15:58,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 430 transitions, 4857 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:15:58,053 INFO L231 Difference]: Finished difference. Result has 518 places, 397 transitions, 3925 flow [2024-06-04 14:15:58,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3925, PETRI_PLACES=518, PETRI_TRANSITIONS=397} [2024-06-04 14:15:58,054 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 486 predicate places. [2024-06-04 14:15:58,054 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 397 transitions, 3925 flow [2024-06-04 14:15:58,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:58,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:15:58,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:15:58,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-04 14:15:58,055 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:15:58,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:15:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -45796416, now seen corresponding path program 33 times [2024-06-04 14:15:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:15:58,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857433110] [2024-06-04 14:15:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:15:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:15:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:15:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:15:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:15:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857433110] [2024-06-04 14:15:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857433110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:15:59,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:15:59,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:15:59,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695955581] [2024-06-04 14:15:59,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:15:59,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:15:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:15:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:15:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:15:59,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:15:59,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 397 transitions, 3925 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:15:59,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:15:59,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:15:59,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:00,574 INFO L124 PetriNetUnfolderBase]: 1203/2229 cut-off events. [2024-06-04 14:16:00,574 INFO L125 PetriNetUnfolderBase]: For 210587/210587 co-relation queries the response was YES. [2024-06-04 14:16:00,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12557 conditions, 2229 events. 1203/2229 cut-off events. For 210587/210587 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13982 event pairs, 239 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 12337. Up to 1947 conditions per place. [2024-06-04 14:16:00,607 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 339 selfloop transitions, 77 changer transitions 0/418 dead transitions. [2024-06-04 14:16:00,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 418 transitions, 4867 flow [2024-06-04 14:16:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:16:00,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:16:00,608 INFO L175 Difference]: Start difference. First operand has 518 places, 397 transitions, 3925 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:16:00,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 418 transitions, 4867 flow [2024-06-04 14:16:01,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 418 transitions, 4741 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-04 14:16:01,834 INFO L231 Difference]: Finished difference. Result has 508 places, 398 transitions, 4015 flow [2024-06-04 14:16:01,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4015, PETRI_PLACES=508, PETRI_TRANSITIONS=398} [2024-06-04 14:16:01,835 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-04 14:16:01,835 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 398 transitions, 4015 flow [2024-06-04 14:16:01,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:01,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:01,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:01,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-04 14:16:01,836 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:01,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 495155242, now seen corresponding path program 10 times [2024-06-04 14:16:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:01,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253501392] [2024-06-04 14:16:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253501392] [2024-06-04 14:16:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253501392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:04,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:04,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:04,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980365605] [2024-06-04 14:16:04,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:04,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:04,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:04,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:04,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 398 transitions, 4015 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:04,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:04,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:04,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:05,354 INFO L124 PetriNetUnfolderBase]: 1219/2265 cut-off events. [2024-06-04 14:16:05,354 INFO L125 PetriNetUnfolderBase]: For 267361/267361 co-relation queries the response was YES. [2024-06-04 14:16:05,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12681 conditions, 2265 events. 1219/2265 cut-off events. For 267361/267361 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14240 event pairs, 253 based on Foata normal form. 10/2275 useless extension candidates. Maximal degree in co-relation 12465. Up to 1943 conditions per place. [2024-06-04 14:16:05,387 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 333 selfloop transitions, 73 changer transitions 16/424 dead transitions. [2024-06-04 14:16:05,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 424 transitions, 4973 flow [2024-06-04 14:16:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:16:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:16:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:16:05,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:16:05,388 INFO L175 Difference]: Start difference. First operand has 508 places, 398 transitions, 4015 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:16:05,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 424 transitions, 4973 flow [2024-06-04 14:16:06,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 424 transitions, 4773 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:06,553 INFO L231 Difference]: Finished difference. Result has 511 places, 392 transitions, 3928 flow [2024-06-04 14:16:06,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3928, PETRI_PLACES=511, PETRI_TRANSITIONS=392} [2024-06-04 14:16:06,554 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-04 14:16:06,554 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 392 transitions, 3928 flow [2024-06-04 14:16:06,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:06,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:06,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:06,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-04 14:16:06,555 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:06,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash 696236556, now seen corresponding path program 34 times [2024-06-04 14:16:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182237531] [2024-06-04 14:16:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:06,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:08,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182237531] [2024-06-04 14:16:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182237531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:08,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:08,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:08,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291854861] [2024-06-04 14:16:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:08,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:08,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:08,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:08,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:08,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 392 transitions, 3928 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:08,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:08,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:08,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:09,308 INFO L124 PetriNetUnfolderBase]: 1187/2205 cut-off events. [2024-06-04 14:16:09,308 INFO L125 PetriNetUnfolderBase]: For 198639/198639 co-relation queries the response was YES. [2024-06-04 14:16:09,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 2205 events. 1187/2205 cut-off events. For 198639/198639 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13853 event pairs, 241 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 12201. Up to 1798 conditions per place. [2024-06-04 14:16:09,341 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 307 selfloop transitions, 106 changer transitions 0/415 dead transitions. [2024-06-04 14:16:09,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 415 transitions, 4876 flow [2024-06-04 14:16:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:16:09,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:16:09,342 INFO L175 Difference]: Start difference. First operand has 511 places, 392 transitions, 3928 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:16:09,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 415 transitions, 4876 flow [2024-06-04 14:16:10,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 415 transitions, 4718 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:16:10,715 INFO L231 Difference]: Finished difference. Result has 504 places, 393 transitions, 4038 flow [2024-06-04 14:16:10,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4038, PETRI_PLACES=504, PETRI_TRANSITIONS=393} [2024-06-04 14:16:10,715 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:16:10,716 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 393 transitions, 4038 flow [2024-06-04 14:16:10,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:10,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:10,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-04 14:16:10,716 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:10,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash 161283460, now seen corresponding path program 11 times [2024-06-04 14:16:10,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:10,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240954302] [2024-06-04 14:16:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:10,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:13,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:13,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240954302] [2024-06-04 14:16:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240954302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:13,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:13,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782685433] [2024-06-04 14:16:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:13,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:13,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:13,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:13,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 393 transitions, 4038 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:13,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:13,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:13,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:14,606 INFO L124 PetriNetUnfolderBase]: 1228/2292 cut-off events. [2024-06-04 14:16:14,606 INFO L125 PetriNetUnfolderBase]: For 323674/323674 co-relation queries the response was YES. [2024-06-04 14:16:14,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14093 conditions, 2292 events. 1228/2292 cut-off events. For 323674/323674 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 14405 event pairs, 254 based on Foata normal form. 8/2300 useless extension candidates. Maximal degree in co-relation 13879. Up to 1654 conditions per place. [2024-06-04 14:16:14,639 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 300 selfloop transitions, 115 changer transitions 10/427 dead transitions. [2024-06-04 14:16:14,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 427 transitions, 5322 flow [2024-06-04 14:16:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:16:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:16:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 14:16:14,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:16:14,640 INFO L175 Difference]: Start difference. First operand has 504 places, 393 transitions, 4038 flow. Second operand 12 states and 144 transitions. [2024-06-04 14:16:14,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 427 transitions, 5322 flow [2024-06-04 14:16:16,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 427 transitions, 5066 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:16,318 INFO L231 Difference]: Finished difference. Result has 507 places, 389 transitions, 3978 flow [2024-06-04 14:16:16,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3978, PETRI_PLACES=507, PETRI_TRANSITIONS=389} [2024-06-04 14:16:16,318 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-04 14:16:16,318 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 389 transitions, 3978 flow [2024-06-04 14:16:16,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:16,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:16,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-04 14:16:16,318 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:16,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -63753374, now seen corresponding path program 12 times [2024-06-04 14:16:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:16,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430096558] [2024-06-04 14:16:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430096558] [2024-06-04 14:16:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430096558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:17,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:17,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:17,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472045878] [2024-06-04 14:16:17,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:17,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:18,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:18,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 389 transitions, 3978 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:18,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:18,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:18,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:19,029 INFO L124 PetriNetUnfolderBase]: 1214/2270 cut-off events. [2024-06-04 14:16:19,029 INFO L125 PetriNetUnfolderBase]: For 344713/344713 co-relation queries the response was YES. [2024-06-04 14:16:19,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13968 conditions, 2270 events. 1214/2270 cut-off events. For 344713/344713 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14270 event pairs, 258 based on Foata normal form. 10/2280 useless extension candidates. Maximal degree in co-relation 13753. Up to 1771 conditions per place. [2024-06-04 14:16:19,062 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 293 selfloop transitions, 107 changer transitions 13/415 dead transitions. [2024-06-04 14:16:19,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 415 transitions, 4924 flow [2024-06-04 14:16:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:16:19,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:16:19,063 INFO L175 Difference]: Start difference. First operand has 507 places, 389 transitions, 3978 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:16:19,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 415 transitions, 4924 flow [2024-06-04 14:16:20,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 415 transitions, 4702 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:16:20,740 INFO L231 Difference]: Finished difference. Result has 504 places, 380 transitions, 3904 flow [2024-06-04 14:16:20,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3756, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3904, PETRI_PLACES=504, PETRI_TRANSITIONS=380} [2024-06-04 14:16:20,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:16:20,741 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 380 transitions, 3904 flow [2024-06-04 14:16:20,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:20,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:20,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:20,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-04 14:16:20,741 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:20,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash 688884906, now seen corresponding path program 35 times [2024-06-04 14:16:20,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:20,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982136500] [2024-06-04 14:16:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:20,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982136500] [2024-06-04 14:16:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982136500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:22,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931462232] [2024-06-04 14:16:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:22,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:22,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:22,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 380 transitions, 3904 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:22,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:22,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:22,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:23,445 INFO L124 PetriNetUnfolderBase]: 1177/2203 cut-off events. [2024-06-04 14:16:23,445 INFO L125 PetriNetUnfolderBase]: For 272448/272448 co-relation queries the response was YES. [2024-06-04 14:16:23,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13727 conditions, 2203 events. 1177/2203 cut-off events. For 272448/272448 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 13820 event pairs, 254 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 13513. Up to 1834 conditions per place. [2024-06-04 14:16:23,477 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 303 selfloop transitions, 97 changer transitions 0/402 dead transitions. [2024-06-04 14:16:23,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 402 transitions, 4820 flow [2024-06-04 14:16:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:16:23,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:16:23,480 INFO L175 Difference]: Start difference. First operand has 504 places, 380 transitions, 3904 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:16:23,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 402 transitions, 4820 flow [2024-06-04 14:16:25,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 402 transitions, 4596 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-04 14:16:25,226 INFO L231 Difference]: Finished difference. Result has 497 places, 381 transitions, 3932 flow [2024-06-04 14:16:25,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3932, PETRI_PLACES=497, PETRI_TRANSITIONS=381} [2024-06-04 14:16:25,227 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-04 14:16:25,227 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 381 transitions, 3932 flow [2024-06-04 14:16:25,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:25,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:25,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:25,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-04 14:16:25,227 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:25,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash 688879326, now seen corresponding path program 36 times [2024-06-04 14:16:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:25,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664209512] [2024-06-04 14:16:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:25,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:26,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:26,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664209512] [2024-06-04 14:16:26,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664209512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:26,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:26,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625296979] [2024-06-04 14:16:26,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:26,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:26,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:26,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 381 transitions, 3932 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:26,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:26,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:26,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:27,813 INFO L124 PetriNetUnfolderBase]: 1181/2211 cut-off events. [2024-06-04 14:16:27,813 INFO L125 PetriNetUnfolderBase]: For 264034/264034 co-relation queries the response was YES. [2024-06-04 14:16:27,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13742 conditions, 2211 events. 1181/2211 cut-off events. For 264034/264034 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 13872 event pairs, 254 based on Foata normal form. 2/2213 useless extension candidates. Maximal degree in co-relation 13531. Up to 1764 conditions per place. [2024-06-04 14:16:27,845 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 297 selfloop transitions, 104 changer transitions 0/403 dead transitions. [2024-06-04 14:16:27,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 403 transitions, 4850 flow [2024-06-04 14:16:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:16:27,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:16:27,846 INFO L175 Difference]: Start difference. First operand has 497 places, 381 transitions, 3932 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:16:27,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 403 transitions, 4850 flow [2024-06-04 14:16:29,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 403 transitions, 4612 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:29,303 INFO L231 Difference]: Finished difference. Result has 499 places, 382 transitions, 3962 flow [2024-06-04 14:16:29,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3962, PETRI_PLACES=499, PETRI_TRANSITIONS=382} [2024-06-04 14:16:29,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-04 14:16:29,304 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 382 transitions, 3962 flow [2024-06-04 14:16:29,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:29,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:29,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-04 14:16:29,304 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:29,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash 182657088, now seen corresponding path program 13 times [2024-06-04 14:16:29,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:29,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288516810] [2024-06-04 14:16:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:29,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:31,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:31,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288516810] [2024-06-04 14:16:31,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288516810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:31,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:31,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:31,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309350833] [2024-06-04 14:16:31,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:31,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:31,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:31,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:31,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:31,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:31,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 382 transitions, 3962 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:31,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:31,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:31,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:31,997 INFO L124 PetriNetUnfolderBase]: 1190/2234 cut-off events. [2024-06-04 14:16:31,997 INFO L125 PetriNetUnfolderBase]: For 309414/309414 co-relation queries the response was YES. [2024-06-04 14:16:32,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13547 conditions, 2234 events. 1190/2234 cut-off events. For 309414/309414 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 14063 event pairs, 257 based on Foata normal form. 10/2244 useless extension candidates. Maximal degree in co-relation 13335. Up to 1771 conditions per place. [2024-06-04 14:16:32,029 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 298 selfloop transitions, 100 changer transitions 9/409 dead transitions. [2024-06-04 14:16:32,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 409 transitions, 4896 flow [2024-06-04 14:16:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:16:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:16:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:16:32,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:16:32,031 INFO L175 Difference]: Start difference. First operand has 499 places, 382 transitions, 3962 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:16:32,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 409 transitions, 4896 flow [2024-06-04 14:16:33,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 409 transitions, 4638 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-04 14:16:33,535 INFO L231 Difference]: Finished difference. Result has 500 places, 379 transitions, 3888 flow [2024-06-04 14:16:33,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3888, PETRI_PLACES=500, PETRI_TRANSITIONS=379} [2024-06-04 14:16:33,535 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-04 14:16:33,535 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 379 transitions, 3888 flow [2024-06-04 14:16:33,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:33,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:33,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:33,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-04 14:16:33,536 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:33,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1055654890, now seen corresponding path program 37 times [2024-06-04 14:16:33,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:33,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101355514] [2024-06-04 14:16:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:33,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:35,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:35,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101355514] [2024-06-04 14:16:35,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101355514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:35,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:35,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:35,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499081806] [2024-06-04 14:16:35,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:35,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:35,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:35,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:35,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 379 transitions, 3888 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:35,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:35,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:35,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:36,216 INFO L124 PetriNetUnfolderBase]: 1168/2194 cut-off events. [2024-06-04 14:16:36,216 INFO L125 PetriNetUnfolderBase]: For 247044/247044 co-relation queries the response was YES. [2024-06-04 14:16:36,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13342 conditions, 2194 events. 1168/2194 cut-off events. For 247044/247044 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13796 event pairs, 284 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 13131. Up to 2011 conditions per place. [2024-06-04 14:16:36,245 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 345 selfloop transitions, 50 changer transitions 0/397 dead transitions. [2024-06-04 14:16:36,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 397 transitions, 4778 flow [2024-06-04 14:16:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:16:36,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:16:36,245 INFO L175 Difference]: Start difference. First operand has 500 places, 379 transitions, 3888 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:16:36,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 397 transitions, 4778 flow [2024-06-04 14:16:37,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 397 transitions, 4570 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:16:37,667 INFO L231 Difference]: Finished difference. Result has 497 places, 380 transitions, 3838 flow [2024-06-04 14:16:37,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3838, PETRI_PLACES=497, PETRI_TRANSITIONS=380} [2024-06-04 14:16:37,668 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-04 14:16:37,668 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 380 transitions, 3838 flow [2024-06-04 14:16:37,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:37,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:37,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-04 14:16:37,668 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:37,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1024953692, now seen corresponding path program 38 times [2024-06-04 14:16:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:37,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799332063] [2024-06-04 14:16:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:37,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799332063] [2024-06-04 14:16:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799332063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:39,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:39,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072862758] [2024-06-04 14:16:39,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:39,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:39,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:39,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:39,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:39,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 380 transitions, 3838 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:39,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:39,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:39,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:40,185 INFO L124 PetriNetUnfolderBase]: 1172/2202 cut-off events. [2024-06-04 14:16:40,185 INFO L125 PetriNetUnfolderBase]: For 244392/244392 co-relation queries the response was YES. [2024-06-04 14:16:40,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13316 conditions, 2202 events. 1172/2202 cut-off events. For 244392/244392 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13865 event pairs, 228 based on Foata normal form. 2/2204 useless extension candidates. Maximal degree in co-relation 13106. Up to 1860 conditions per place. [2024-06-04 14:16:40,218 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 309 selfloop transitions, 92 changer transitions 0/403 dead transitions. [2024-06-04 14:16:40,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 403 transitions, 4770 flow [2024-06-04 14:16:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:16:40,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:16:40,219 INFO L175 Difference]: Start difference. First operand has 497 places, 380 transitions, 3838 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:16:40,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 403 transitions, 4770 flow [2024-06-04 14:16:41,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 403 transitions, 4622 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:41,616 INFO L231 Difference]: Finished difference. Result has 499 places, 381 transitions, 3934 flow [2024-06-04 14:16:41,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3934, PETRI_PLACES=499, PETRI_TRANSITIONS=381} [2024-06-04 14:16:41,616 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-04 14:16:41,616 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 381 transitions, 3934 flow [2024-06-04 14:16:41,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:41,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:41,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:41,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-04 14:16:41,617 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:41,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash 298309410, now seen corresponding path program 39 times [2024-06-04 14:16:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:41,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893362605] [2024-06-04 14:16:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:41,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:43,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:43,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893362605] [2024-06-04 14:16:43,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893362605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:43,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:43,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682631127] [2024-06-04 14:16:43,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:43,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:43,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 381 transitions, 3934 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:43,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:43,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:43,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:44,050 INFO L124 PetriNetUnfolderBase]: 1176/2210 cut-off events. [2024-06-04 14:16:44,050 INFO L125 PetriNetUnfolderBase]: For 248627/248627 co-relation queries the response was YES. [2024-06-04 14:16:44,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13503 conditions, 2210 events. 1176/2210 cut-off events. For 248627/248627 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13932 event pairs, 284 based on Foata normal form. 2/2212 useless extension candidates. Maximal degree in co-relation 13292. Up to 2013 conditions per place. [2024-06-04 14:16:44,082 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 346 selfloop transitions, 51 changer transitions 0/399 dead transitions. [2024-06-04 14:16:44,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 399 transitions, 4830 flow [2024-06-04 14:16:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:16:44,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:16:44,083 INFO L175 Difference]: Start difference. First operand has 499 places, 381 transitions, 3934 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:16:44,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 399 transitions, 4830 flow [2024-06-04 14:16:45,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 399 transitions, 4596 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:45,460 INFO L231 Difference]: Finished difference. Result has 501 places, 382 transitions, 3864 flow [2024-06-04 14:16:45,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3864, PETRI_PLACES=501, PETRI_TRANSITIONS=382} [2024-06-04 14:16:45,461 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-04 14:16:45,461 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 382 transitions, 3864 flow [2024-06-04 14:16:45,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:45,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:45,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:45,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-04 14:16:45,461 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:45,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:45,461 INFO L85 PathProgramCache]: Analyzing trace with hash 84161728, now seen corresponding path program 40 times [2024-06-04 14:16:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393319928] [2024-06-04 14:16:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:45,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:47,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:47,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393319928] [2024-06-04 14:16:47,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393319928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:47,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:47,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:16:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732314500] [2024-06-04 14:16:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:47,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:16:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:16:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:16:47,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:47,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 382 transitions, 3864 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:47,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:47,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:47,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:47,991 INFO L124 PetriNetUnfolderBase]: 1180/2218 cut-off events. [2024-06-04 14:16:47,991 INFO L125 PetriNetUnfolderBase]: For 252708/252708 co-relation queries the response was YES. [2024-06-04 14:16:48,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13450 conditions, 2218 events. 1180/2218 cut-off events. For 252708/252708 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 14027 event pairs, 274 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 13238. Up to 1995 conditions per place. [2024-06-04 14:16:48,024 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 341 selfloop transitions, 60 changer transitions 0/403 dead transitions. [2024-06-04 14:16:48,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 403 transitions, 4790 flow [2024-06-04 14:16:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:16:48,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:16:48,025 INFO L175 Difference]: Start difference. First operand has 501 places, 382 transitions, 3864 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:16:48,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 403 transitions, 4790 flow [2024-06-04 14:16:49,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 403 transitions, 4636 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:49,396 INFO L231 Difference]: Finished difference. Result has 503 places, 383 transitions, 3894 flow [2024-06-04 14:16:49,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3894, PETRI_PLACES=503, PETRI_TRANSITIONS=383} [2024-06-04 14:16:49,396 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-04 14:16:49,396 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 383 transitions, 3894 flow [2024-06-04 14:16:49,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:49,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:49,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:49,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-04 14:16:49,397 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:49,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:49,397 INFO L85 PathProgramCache]: Analyzing trace with hash -934309440, now seen corresponding path program 14 times [2024-06-04 14:16:49,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:49,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889398553] [2024-06-04 14:16:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:49,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:51,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889398553] [2024-06-04 14:16:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889398553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:51,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:51,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412118798] [2024-06-04 14:16:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:51,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:51,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:51,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:51,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:51,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 383 transitions, 3894 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:51,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:51,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:51,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:52,258 INFO L124 PetriNetUnfolderBase]: 1221/2305 cut-off events. [2024-06-04 14:16:52,258 INFO L125 PetriNetUnfolderBase]: For 384377/384377 co-relation queries the response was YES. [2024-06-04 14:16:52,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15057 conditions, 2305 events. 1221/2305 cut-off events. For 384377/384377 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 14583 event pairs, 247 based on Foata normal form. 8/2313 useless extension candidates. Maximal degree in co-relation 14844. Up to 1800 conditions per place. [2024-06-04 14:16:52,290 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 309 selfloop transitions, 98 changer transitions 8/417 dead transitions. [2024-06-04 14:16:52,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 417 transitions, 5160 flow [2024-06-04 14:16:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:16:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:16:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:16:52,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-04 14:16:52,290 INFO L175 Difference]: Start difference. First operand has 503 places, 383 transitions, 3894 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:16:52,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 417 transitions, 5160 flow [2024-06-04 14:16:54,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 417 transitions, 4986 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:16:54,123 INFO L231 Difference]: Finished difference. Result has 506 places, 381 transitions, 3904 flow [2024-06-04 14:16:54,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3904, PETRI_PLACES=506, PETRI_TRANSITIONS=381} [2024-06-04 14:16:54,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-04 14:16:54,123 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 381 transitions, 3904 flow [2024-06-04 14:16:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:54,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:54,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-04 14:16:54,124 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:54,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -934318740, now seen corresponding path program 15 times [2024-06-04 14:16:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010586624] [2024-06-04 14:16:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:16:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:16:55,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:16:55,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010586624] [2024-06-04 14:16:55,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010586624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:16:55,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:16:55,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:16:55,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391435153] [2024-06-04 14:16:55,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:16:55,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:16:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:16:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:16:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:16:56,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:16:56,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 381 transitions, 3904 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:56,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:16:56,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:16:56,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:16:57,022 INFO L124 PetriNetUnfolderBase]: 1213/2293 cut-off events. [2024-06-04 14:16:57,022 INFO L125 PetriNetUnfolderBase]: For 405646/405646 co-relation queries the response was YES. [2024-06-04 14:16:57,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15058 conditions, 2293 events. 1213/2293 cut-off events. For 405646/405646 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 14485 event pairs, 253 based on Foata normal form. 10/2303 useless extension candidates. Maximal degree in co-relation 14844. Up to 1865 conditions per place. [2024-06-04 14:16:57,057 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 302 selfloop transitions, 92 changer transitions 11/407 dead transitions. [2024-06-04 14:16:57,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 407 transitions, 4838 flow [2024-06-04 14:16:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:16:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:16:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:16:57,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-04 14:16:57,058 INFO L175 Difference]: Start difference. First operand has 506 places, 381 transitions, 3904 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:16:57,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 407 transitions, 4838 flow [2024-06-04 14:16:58,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 407 transitions, 4646 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:16:58,751 INFO L231 Difference]: Finished difference. Result has 504 places, 374 transitions, 3847 flow [2024-06-04 14:16:58,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3847, PETRI_PLACES=504, PETRI_TRANSITIONS=374} [2024-06-04 14:16:58,752 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:16:58,752 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 374 transitions, 3847 flow [2024-06-04 14:16:58,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:16:58,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:16:58,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:16:58,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-04 14:16:58,752 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:16:58,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:16:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1483338538, now seen corresponding path program 41 times [2024-06-04 14:16:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:16:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452759950] [2024-06-04 14:16:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:16:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:16:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:00,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452759950] [2024-06-04 14:17:00,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452759950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:00,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:00,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395145089] [2024-06-04 14:17:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:00,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:00,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:00,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:00,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 374 transitions, 3847 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:00,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:00,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:00,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:01,121 INFO L124 PetriNetUnfolderBase]: 1179/2231 cut-off events. [2024-06-04 14:17:01,122 INFO L125 PetriNetUnfolderBase]: For 336552/336552 co-relation queries the response was YES. [2024-06-04 14:17:01,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 2231 events. 1179/2231 cut-off events. For 336552/336552 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14081 event pairs, 295 based on Foata normal form. 2/2233 useless extension candidates. Maximal degree in co-relation 14638. Up to 2048 conditions per place. [2024-06-04 14:17:01,158 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 48 changer transitions 0/392 dead transitions. [2024-06-04 14:17:01,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 392 transitions, 4731 flow [2024-06-04 14:17:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:17:01,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:17:01,159 INFO L175 Difference]: Start difference. First operand has 504 places, 374 transitions, 3847 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:17:01,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 392 transitions, 4731 flow [2024-06-04 14:17:02,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 392 transitions, 4537 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-04 14:17:02,897 INFO L231 Difference]: Finished difference. Result has 498 places, 375 transitions, 3815 flow [2024-06-04 14:17:02,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3815, PETRI_PLACES=498, PETRI_TRANSITIONS=375} [2024-06-04 14:17:02,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 466 predicate places. [2024-06-04 14:17:02,897 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 375 transitions, 3815 flow [2024-06-04 14:17:02,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:02,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:02,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:02,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-04 14:17:02,898 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:02,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1608017554, now seen corresponding path program 42 times [2024-06-04 14:17:02,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:02,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314936553] [2024-06-04 14:17:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:02,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:04,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314936553] [2024-06-04 14:17:04,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314936553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:04,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:04,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565077324] [2024-06-04 14:17:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:04,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:04,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 375 transitions, 3815 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:04,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:04,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:04,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:05,826 INFO L124 PetriNetUnfolderBase]: 1183/2239 cut-off events. [2024-06-04 14:17:05,826 INFO L125 PetriNetUnfolderBase]: For 323046/323046 co-relation queries the response was YES. [2024-06-04 14:17:05,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14754 conditions, 2239 events. 1183/2239 cut-off events. For 323046/323046 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14156 event pairs, 273 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 14544. Up to 1935 conditions per place. [2024-06-04 14:17:05,856 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 82 changer transitions 0/397 dead transitions. [2024-06-04 14:17:05,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 397 transitions, 4737 flow [2024-06-04 14:17:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:17:05,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:17:05,857 INFO L175 Difference]: Start difference. First operand has 498 places, 375 transitions, 3815 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:17:05,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 397 transitions, 4737 flow [2024-06-04 14:17:07,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 397 transitions, 4585 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:07,491 INFO L231 Difference]: Finished difference. Result has 500 places, 376 transitions, 3897 flow [2024-06-04 14:17:07,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3897, PETRI_PLACES=500, PETRI_TRANSITIONS=376} [2024-06-04 14:17:07,492 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-04 14:17:07,492 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 376 transitions, 3897 flow [2024-06-04 14:17:07,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:07,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:07,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:07,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-04 14:17:07,492 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:07,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash 294590340, now seen corresponding path program 43 times [2024-06-04 14:17:07,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:07,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852896856] [2024-06-04 14:17:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:07,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852896856] [2024-06-04 14:17:09,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852896856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:09,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:09,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:09,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873100948] [2024-06-04 14:17:09,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:09,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:09,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 376 transitions, 3897 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:09,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:09,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:09,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:10,404 INFO L124 PetriNetUnfolderBase]: 1187/2247 cut-off events. [2024-06-04 14:17:10,404 INFO L125 PetriNetUnfolderBase]: For 328682/328682 co-relation queries the response was YES. [2024-06-04 14:17:10,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 2247 events. 1187/2247 cut-off events. For 328682/328682 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14200 event pairs, 297 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 14724. Up to 2064 conditions per place. [2024-06-04 14:17:10,437 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 345 selfloop transitions, 47 changer transitions 0/394 dead transitions. [2024-06-04 14:17:10,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 394 transitions, 4787 flow [2024-06-04 14:17:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:17:10,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:17:10,437 INFO L175 Difference]: Start difference. First operand has 500 places, 376 transitions, 3897 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:17:10,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 394 transitions, 4787 flow [2024-06-04 14:17:12,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 394 transitions, 4563 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:12,230 INFO L231 Difference]: Finished difference. Result has 502 places, 377 transitions, 3837 flow [2024-06-04 14:17:12,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3837, PETRI_PLACES=502, PETRI_TRANSITIONS=377} [2024-06-04 14:17:12,231 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-04 14:17:12,231 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 377 transitions, 3837 flow [2024-06-04 14:17:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:12,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:12,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:12,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-04 14:17:12,231 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:12,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1295123024, now seen corresponding path program 44 times [2024-06-04 14:17:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:12,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524229335] [2024-06-04 14:17:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:12,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:13,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:13,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524229335] [2024-06-04 14:17:13,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524229335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:13,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:13,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:13,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831491401] [2024-06-04 14:17:13,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:13,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:13,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:13,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:13,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:14,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:14,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 377 transitions, 3837 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:14,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:14,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:14,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:15,019 INFO L124 PetriNetUnfolderBase]: 1191/2255 cut-off events. [2024-06-04 14:17:15,019 INFO L125 PetriNetUnfolderBase]: For 328470/328470 co-relation queries the response was YES. [2024-06-04 14:17:15,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14862 conditions, 2255 events. 1191/2255 cut-off events. For 328470/328470 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14259 event pairs, 291 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 14650. Up to 2033 conditions per place. [2024-06-04 14:17:15,048 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 334 selfloop transitions, 61 changer transitions 0/397 dead transitions. [2024-06-04 14:17:15,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 397 transitions, 4749 flow [2024-06-04 14:17:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:15,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:17:15,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:17:15,049 INFO L175 Difference]: Start difference. First operand has 502 places, 377 transitions, 3837 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:17:15,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 397 transitions, 4749 flow [2024-06-04 14:17:16,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 397 transitions, 4597 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:16,769 INFO L231 Difference]: Finished difference. Result has 504 places, 378 transitions, 3878 flow [2024-06-04 14:17:16,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3878, PETRI_PLACES=504, PETRI_TRANSITIONS=378} [2024-06-04 14:17:16,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:17:16,770 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 378 transitions, 3878 flow [2024-06-04 14:17:16,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:16,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:16,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:16,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-04 14:17:16,770 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:16,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1295117444, now seen corresponding path program 45 times [2024-06-04 14:17:16,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56109847] [2024-06-04 14:17:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:16,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:18,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:18,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56109847] [2024-06-04 14:17:18,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56109847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:18,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:18,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:18,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768903036] [2024-06-04 14:17:18,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:18,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:18,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:18,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:18,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:18,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:18,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 378 transitions, 3878 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:18,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:18,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:18,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:19,569 INFO L124 PetriNetUnfolderBase]: 1195/2263 cut-off events. [2024-06-04 14:17:19,569 INFO L125 PetriNetUnfolderBase]: For 334096/334096 co-relation queries the response was YES. [2024-06-04 14:17:19,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14977 conditions, 2263 events. 1195/2263 cut-off events. For 334096/334096 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14346 event pairs, 291 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 14764. Up to 2049 conditions per place. [2024-06-04 14:17:19,603 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 338 selfloop transitions, 58 changer transitions 0/398 dead transitions. [2024-06-04 14:17:19,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 398 transitions, 4792 flow [2024-06-04 14:17:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:17:19,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:17:19,604 INFO L175 Difference]: Start difference. First operand has 504 places, 378 transitions, 3878 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:17:19,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 398 transitions, 4792 flow [2024-06-04 14:17:21,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 398 transitions, 4611 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:21,387 INFO L231 Difference]: Finished difference. Result has 506 places, 379 transitions, 3885 flow [2024-06-04 14:17:21,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3885, PETRI_PLACES=506, PETRI_TRANSITIONS=379} [2024-06-04 14:17:21,387 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-04 14:17:21,387 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 379 transitions, 3885 flow [2024-06-04 14:17:21,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:21,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:21,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:21,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-04 14:17:21,388 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:21,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash -941937796, now seen corresponding path program 46 times [2024-06-04 14:17:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:21,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296904406] [2024-06-04 14:17:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:23,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:23,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296904406] [2024-06-04 14:17:23,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296904406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:23,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:23,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:23,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338168753] [2024-06-04 14:17:23,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:23,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:23,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:23,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 379 transitions, 3885 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:23,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:23,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:23,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:24,588 INFO L124 PetriNetUnfolderBase]: 1199/2271 cut-off events. [2024-06-04 14:17:24,589 INFO L125 PetriNetUnfolderBase]: For 339615/339615 co-relation queries the response was YES. [2024-06-04 14:17:24,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15046 conditions, 2271 events. 1199/2271 cut-off events. For 339615/339615 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14430 event pairs, 259 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 14832. Up to 1951 conditions per place. [2024-06-04 14:17:24,622 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 312 selfloop transitions, 87 changer transitions 0/401 dead transitions. [2024-06-04 14:17:24,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 401 transitions, 4821 flow [2024-06-04 14:17:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:17:24,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:17:24,623 INFO L175 Difference]: Start difference. First operand has 506 places, 379 transitions, 3885 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:17:24,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 401 transitions, 4821 flow [2024-06-04 14:17:26,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 401 transitions, 4643 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:26,623 INFO L231 Difference]: Finished difference. Result has 508 places, 380 transitions, 3955 flow [2024-06-04 14:17:26,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3955, PETRI_PLACES=508, PETRI_TRANSITIONS=380} [2024-06-04 14:17:26,623 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-04 14:17:26,623 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 380 transitions, 3955 flow [2024-06-04 14:17:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:26,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:26,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:26,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-04 14:17:26,623 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:26,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1248224098, now seen corresponding path program 16 times [2024-06-04 14:17:26,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:26,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287071140] [2024-06-04 14:17:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:28,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287071140] [2024-06-04 14:17:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287071140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:28,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:28,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:28,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115973202] [2024-06-04 14:17:28,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:28,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:28,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 380 transitions, 3955 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:28,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:28,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:28,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:30,081 INFO L124 PetriNetUnfolderBase]: 1221/2317 cut-off events. [2024-06-04 14:17:30,081 INFO L125 PetriNetUnfolderBase]: For 408402/408402 co-relation queries the response was YES. [2024-06-04 14:17:30,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15245 conditions, 2317 events. 1221/2317 cut-off events. For 408402/408402 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 14772 event pairs, 279 based on Foata normal form. 10/2327 useless extension candidates. Maximal degree in co-relation 15030. Up to 1920 conditions per place. [2024-06-04 14:17:30,116 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 308 selfloop transitions, 88 changer transitions 12/410 dead transitions. [2024-06-04 14:17:30,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 410 transitions, 4913 flow [2024-06-04 14:17:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:17:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:17:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:17:30,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:17:30,117 INFO L175 Difference]: Start difference. First operand has 508 places, 380 transitions, 3955 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:17:30,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 410 transitions, 4913 flow [2024-06-04 14:17:31,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 410 transitions, 4675 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:31,924 INFO L231 Difference]: Finished difference. Result has 511 places, 378 transitions, 3877 flow [2024-06-04 14:17:31,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3877, PETRI_PLACES=511, PETRI_TRANSITIONS=378} [2024-06-04 14:17:31,924 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-04 14:17:31,924 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 378 transitions, 3877 flow [2024-06-04 14:17:31,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:31,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:31,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:31,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-04 14:17:31,925 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:31,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1627588544, now seen corresponding path program 17 times [2024-06-04 14:17:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489394454] [2024-06-04 14:17:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:31,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:33,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489394454] [2024-06-04 14:17:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489394454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:33,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:33,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677073709] [2024-06-04 14:17:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:33,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:33,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:33,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:33,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 378 transitions, 3877 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:33,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:33,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:33,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:34,468 INFO L124 PetriNetUnfolderBase]: 1211/2303 cut-off events. [2024-06-04 14:17:34,468 INFO L125 PetriNetUnfolderBase]: For 412491/412491 co-relation queries the response was YES. [2024-06-04 14:17:34,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15098 conditions, 2303 events. 1211/2303 cut-off events. For 412491/412491 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14713 event pairs, 309 based on Foata normal form. 10/2313 useless extension candidates. Maximal degree in co-relation 14882. Up to 2066 conditions per place. [2024-06-04 14:17:34,502 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 337 selfloop transitions, 46 changer transitions 16/401 dead transitions. [2024-06-04 14:17:34,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 401 transitions, 4777 flow [2024-06-04 14:17:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:17:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:17:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 14:17:34,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2024-06-04 14:17:34,503 INFO L175 Difference]: Start difference. First operand has 511 places, 378 transitions, 3877 flow. Second operand 12 states and 131 transitions. [2024-06-04 14:17:34,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 401 transitions, 4777 flow [2024-06-04 14:17:36,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 401 transitions, 4599 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:17:36,363 INFO L231 Difference]: Finished difference. Result has 511 places, 372 transitions, 3754 flow [2024-06-04 14:17:36,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3754, PETRI_PLACES=511, PETRI_TRANSITIONS=372} [2024-06-04 14:17:36,363 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-04 14:17:36,363 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 372 transitions, 3754 flow [2024-06-04 14:17:36,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:36,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:36,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:36,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-04 14:17:36,364 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:36,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1615369204, now seen corresponding path program 47 times [2024-06-04 14:17:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001137364] [2024-06-04 14:17:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:36,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:37,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:37,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001137364] [2024-06-04 14:17:37,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001137364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:37,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:37,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:37,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417066752] [2024-06-04 14:17:37,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:37,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:37,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:37,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:38,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:38,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 372 transitions, 3754 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:38,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:38,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:38,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:38,955 INFO L124 PetriNetUnfolderBase]: 1179/2243 cut-off events. [2024-06-04 14:17:38,955 INFO L125 PetriNetUnfolderBase]: For 347938/347938 co-relation queries the response was YES. [2024-06-04 14:17:38,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14846 conditions, 2243 events. 1179/2243 cut-off events. For 347938/347938 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 14274 event pairs, 283 based on Foata normal form. 2/2245 useless extension candidates. Maximal degree in co-relation 14630. Up to 1951 conditions per place. [2024-06-04 14:17:38,990 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 315 selfloop transitions, 76 changer transitions 0/393 dead transitions. [2024-06-04 14:17:38,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 393 transitions, 4670 flow [2024-06-04 14:17:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:17:38,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:17:38,991 INFO L175 Difference]: Start difference. First operand has 511 places, 372 transitions, 3754 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:17:38,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 393 transitions, 4670 flow [2024-06-04 14:17:40,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 393 transitions, 4564 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 14:17:40,964 INFO L231 Difference]: Finished difference. Result has 504 places, 373 transitions, 3877 flow [2024-06-04 14:17:40,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3650, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3877, PETRI_PLACES=504, PETRI_TRANSITIONS=373} [2024-06-04 14:17:40,965 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:17:40,965 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 373 transitions, 3877 flow [2024-06-04 14:17:40,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:40,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:40,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:40,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-04 14:17:40,965 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:40,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash -941943376, now seen corresponding path program 48 times [2024-06-04 14:17:40,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:40,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197707742] [2024-06-04 14:17:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:40,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:42,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:42,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197707742] [2024-06-04 14:17:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197707742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:17:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526875729] [2024-06-04 14:17:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:42,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:17:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:17:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:17:42,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:42,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 373 transitions, 3877 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:42,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:42,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:42,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:43,535 INFO L124 PetriNetUnfolderBase]: 1183/2251 cut-off events. [2024-06-04 14:17:43,535 INFO L125 PetriNetUnfolderBase]: For 334720/334720 co-relation queries the response was YES. [2024-06-04 14:17:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14943 conditions, 2251 events. 1183/2251 cut-off events. For 334720/334720 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14374 event pairs, 263 based on Foata normal form. 2/2253 useless extension candidates. Maximal degree in co-relation 14730. Up to 1449 conditions per place. [2024-06-04 14:17:43,573 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 251 selfloop transitions, 142 changer transitions 0/395 dead transitions. [2024-06-04 14:17:43,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 395 transitions, 4801 flow [2024-06-04 14:17:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:17:43,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:17:43,575 INFO L175 Difference]: Start difference. First operand has 504 places, 373 transitions, 3877 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:17:43,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 395 transitions, 4801 flow [2024-06-04 14:17:45,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 395 transitions, 4582 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-04 14:17:45,530 INFO L231 Difference]: Finished difference. Result has 505 places, 374 transitions, 4018 flow [2024-06-04 14:17:45,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4018, PETRI_PLACES=505, PETRI_TRANSITIONS=374} [2024-06-04 14:17:45,531 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-04 14:17:45,531 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 374 transitions, 4018 flow [2024-06-04 14:17:45,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:45,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:45,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:45,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-04 14:17:45,531 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:45,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash -941728050, now seen corresponding path program 18 times [2024-06-04 14:17:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:45,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777221996] [2024-06-04 14:17:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777221996] [2024-06-04 14:17:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777221996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:47,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:47,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257713132] [2024-06-04 14:17:47,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:47,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:47,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 374 transitions, 4018 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:47,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:47,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:47,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:48,249 INFO L124 PetriNetUnfolderBase]: 1207/2307 cut-off events. [2024-06-04 14:17:48,250 INFO L125 PetriNetUnfolderBase]: For 454673/454673 co-relation queries the response was YES. [2024-06-04 14:17:48,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15193 conditions, 2307 events. 1207/2307 cut-off events. For 454673/454673 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14779 event pairs, 263 based on Foata normal form. 16/2323 useless extension candidates. Maximal degree in co-relation 14980. Up to 1891 conditions per place. [2024-06-04 14:17:48,282 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 298 selfloop transitions, 85 changer transitions 16/401 dead transitions. [2024-06-04 14:17:48,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 401 transitions, 4936 flow [2024-06-04 14:17:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:17:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:17:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:17:48,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-04 14:17:48,283 INFO L175 Difference]: Start difference. First operand has 505 places, 374 transitions, 4018 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:17:48,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 401 transitions, 4936 flow [2024-06-04 14:17:50,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 401 transitions, 4586 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:50,233 INFO L231 Difference]: Finished difference. Result has 508 places, 368 transitions, 3801 flow [2024-06-04 14:17:50,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3801, PETRI_PLACES=508, PETRI_TRANSITIONS=368} [2024-06-04 14:17:50,233 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-04 14:17:50,234 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 368 transitions, 3801 flow [2024-06-04 14:17:50,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:50,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:50,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:50,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-04 14:17:50,234 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:50,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:50,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1814820724, now seen corresponding path program 49 times [2024-06-04 14:17:50,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:50,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859182464] [2024-06-04 14:17:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:50,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:51,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:51,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859182464] [2024-06-04 14:17:51,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859182464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:51,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:51,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926694335] [2024-06-04 14:17:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:51,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:51,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:51,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 368 transitions, 3801 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:51,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:51,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:51,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:52,780 INFO L124 PetriNetUnfolderBase]: 1167/2227 cut-off events. [2024-06-04 14:17:52,780 INFO L125 PetriNetUnfolderBase]: For 342666/342666 co-relation queries the response was YES. [2024-06-04 14:17:52,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14802 conditions, 2227 events. 1167/2227 cut-off events. For 342666/342666 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 14190 event pairs, 297 based on Foata normal form. 2/2229 useless extension candidates. Maximal degree in co-relation 14588. Up to 2013 conditions per place. [2024-06-04 14:17:52,814 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 330 selfloop transitions, 56 changer transitions 0/388 dead transitions. [2024-06-04 14:17:52,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 388 transitions, 4699 flow [2024-06-04 14:17:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:17:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:17:52,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:17:52,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:17:52,815 INFO L175 Difference]: Start difference. First operand has 508 places, 368 transitions, 3801 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:17:52,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 388 transitions, 4699 flow [2024-06-04 14:17:54,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 388 transitions, 4515 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:17:54,740 INFO L231 Difference]: Finished difference. Result has 501 places, 369 transitions, 3807 flow [2024-06-04 14:17:54,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3807, PETRI_PLACES=501, PETRI_TRANSITIONS=369} [2024-06-04 14:17:54,740 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-04 14:17:54,740 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 369 transitions, 3807 flow [2024-06-04 14:17:54,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:54,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:54,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:54,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-04 14:17:54,741 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:54,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1615374784, now seen corresponding path program 50 times [2024-06-04 14:17:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:54,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671586216] [2024-06-04 14:17:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:54,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:17:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:17:56,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:17:56,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671586216] [2024-06-04 14:17:56,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671586216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:17:56,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:17:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:17:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200991084] [2024-06-04 14:17:56,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:17:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:17:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:17:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:17:56,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:17:56,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:17:56,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 369 transitions, 3807 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:56,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:17:56,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:17:56,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:17:57,435 INFO L124 PetriNetUnfolderBase]: 1171/2234 cut-off events. [2024-06-04 14:17:57,435 INFO L125 PetriNetUnfolderBase]: For 334772/334772 co-relation queries the response was YES. [2024-06-04 14:17:57,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14801 conditions, 2234 events. 1171/2234 cut-off events. For 334772/334772 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14268 event pairs, 286 based on Foata normal form. 2/2236 useless extension candidates. Maximal degree in co-relation 14589. Up to 1990 conditions per place. [2024-06-04 14:17:57,468 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 69 changer transitions 0/392 dead transitions. [2024-06-04 14:17:57,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 392 transitions, 4734 flow [2024-06-04 14:17:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:17:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:17:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:17:57,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:17:57,469 INFO L175 Difference]: Start difference. First operand has 501 places, 369 transitions, 3807 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:17:57,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 392 transitions, 4734 flow [2024-06-04 14:17:59,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 392 transitions, 4556 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 14:17:59,144 INFO L231 Difference]: Finished difference. Result has 504 places, 370 transitions, 3845 flow [2024-06-04 14:17:59,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3845, PETRI_PLACES=504, PETRI_TRANSITIONS=370} [2024-06-04 14:17:59,145 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:17:59,145 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 370 transitions, 3845 flow [2024-06-04 14:17:59,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:17:59,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:17:59,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:17:59,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-04 14:17:59,145 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:17:59,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:17:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash 354987698, now seen corresponding path program 51 times [2024-06-04 14:17:59,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:17:59,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880066394] [2024-06-04 14:17:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:17:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:17:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:00,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880066394] [2024-06-04 14:18:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880066394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:00,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:00,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33232001] [2024-06-04 14:18:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:00,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:00,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:00,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 370 transitions, 3845 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:00,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:00,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:00,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:01,586 INFO L124 PetriNetUnfolderBase]: 1175/2243 cut-off events. [2024-06-04 14:18:01,587 INFO L125 PetriNetUnfolderBase]: For 340292/340292 co-relation queries the response was YES. [2024-06-04 14:18:01,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14908 conditions, 2243 events. 1175/2243 cut-off events. For 340292/340292 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 14317 event pairs, 263 based on Foata normal form. 2/2245 useless extension candidates. Maximal degree in co-relation 14695. Up to 1937 conditions per place. [2024-06-04 14:18:01,620 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 304 selfloop transitions, 84 changer transitions 0/390 dead transitions. [2024-06-04 14:18:01,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 390 transitions, 4755 flow [2024-06-04 14:18:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:18:01,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:18:01,621 INFO L175 Difference]: Start difference. First operand has 504 places, 370 transitions, 3845 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:18:01,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 390 transitions, 4755 flow [2024-06-04 14:18:03,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 390 transitions, 4549 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-04 14:18:03,511 INFO L231 Difference]: Finished difference. Result has 505 places, 371 transitions, 3887 flow [2024-06-04 14:18:03,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3639, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3887, PETRI_PLACES=505, PETRI_TRANSITIONS=371} [2024-06-04 14:18:03,511 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-04 14:18:03,511 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 371 transitions, 3887 flow [2024-06-04 14:18:03,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:03,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:03,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:03,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-04 14:18:03,512 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:03,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash 354982118, now seen corresponding path program 52 times [2024-06-04 14:18:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:03,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112219328] [2024-06-04 14:18:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112219328] [2024-06-04 14:18:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112219328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223832166] [2024-06-04 14:18:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:05,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:05,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:05,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 371 transitions, 3887 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:05,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:05,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:05,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:06,438 INFO L124 PetriNetUnfolderBase]: 1179/2251 cut-off events. [2024-06-04 14:18:06,439 INFO L125 PetriNetUnfolderBase]: For 345840/345840 co-relation queries the response was YES. [2024-06-04 14:18:06,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15032 conditions, 2251 events. 1179/2251 cut-off events. For 345840/345840 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 14397 event pairs, 263 based on Foata normal form. 2/2253 useless extension candidates. Maximal degree in co-relation 14818. Up to 1931 conditions per place. [2024-06-04 14:18:06,472 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 304 selfloop transitions, 85 changer transitions 0/391 dead transitions. [2024-06-04 14:18:06,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 391 transitions, 4799 flow [2024-06-04 14:18:06,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:18:06,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:18:06,473 INFO L175 Difference]: Start difference. First operand has 505 places, 371 transitions, 3887 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:18:06,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 391 transitions, 4799 flow [2024-06-04 14:18:08,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 391 transitions, 4561 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:08,266 INFO L231 Difference]: Finished difference. Result has 507 places, 372 transitions, 3901 flow [2024-06-04 14:18:08,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3901, PETRI_PLACES=507, PETRI_TRANSITIONS=372} [2024-06-04 14:18:08,266 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-04 14:18:08,266 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 372 transitions, 3901 flow [2024-06-04 14:18:08,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:08,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:08,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-04 14:18:08,267 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:08,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:08,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1607740848, now seen corresponding path program 19 times [2024-06-04 14:18:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040920885] [2024-06-04 14:18:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:10,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:10,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040920885] [2024-06-04 14:18:10,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040920885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:10,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:10,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:10,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129226362] [2024-06-04 14:18:10,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:10,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:10,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:10,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:10,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:10,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 372 transitions, 3901 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:10,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:10,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:10,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:12,018 INFO L124 PetriNetUnfolderBase]: 1220/2338 cut-off events. [2024-06-04 14:18:12,018 INFO L125 PetriNetUnfolderBase]: For 481624/481624 co-relation queries the response was YES. [2024-06-04 14:18:12,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16591 conditions, 2338 events. 1220/2338 cut-off events. For 481624/481624 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 15013 event pairs, 296 based on Foata normal form. 8/2346 useless extension candidates. Maximal degree in co-relation 16376. Up to 1872 conditions per place. [2024-06-04 14:18:12,053 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 311 selfloop transitions, 79 changer transitions 13/405 dead transitions. [2024-06-04 14:18:12,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 405 transitions, 5135 flow [2024-06-04 14:18:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 14:18:12,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 14:18:12,054 INFO L175 Difference]: Start difference. First operand has 507 places, 372 transitions, 3901 flow. Second operand 12 states and 143 transitions. [2024-06-04 14:18:12,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 405 transitions, 5135 flow [2024-06-04 14:18:14,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 405 transitions, 4893 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:14,054 INFO L231 Difference]: Finished difference. Result has 510 places, 366 transitions, 3764 flow [2024-06-04 14:18:14,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3659, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3764, PETRI_PLACES=510, PETRI_TRANSITIONS=366} [2024-06-04 14:18:14,054 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-04 14:18:14,054 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 366 transitions, 3764 flow [2024-06-04 14:18:14,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:14,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:14,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:14,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-04 14:18:14,054 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:14,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:14,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1809098868, now seen corresponding path program 20 times [2024-06-04 14:18:14,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:14,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180671152] [2024-06-04 14:18:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:14,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:16,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:16,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180671152] [2024-06-04 14:18:16,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180671152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:16,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:16,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:16,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962370460] [2024-06-04 14:18:16,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:16,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:16,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:16,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:16,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 366 transitions, 3764 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:16,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:16,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:16,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:17,185 INFO L124 PetriNetUnfolderBase]: 1201/2305 cut-off events. [2024-06-04 14:18:17,185 INFO L125 PetriNetUnfolderBase]: For 503692/503692 co-relation queries the response was YES. [2024-06-04 14:18:17,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16338 conditions, 2305 events. 1201/2305 cut-off events. For 503692/503692 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 14769 event pairs, 316 based on Foata normal form. 10/2315 useless extension candidates. Maximal degree in co-relation 16122. Up to 2029 conditions per place. [2024-06-04 14:18:17,216 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 320 selfloop transitions, 59 changer transitions 8/389 dead transitions. [2024-06-04 14:18:17,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 389 transitions, 4640 flow [2024-06-04 14:18:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:18:17,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:18:17,216 INFO L175 Difference]: Start difference. First operand has 510 places, 366 transitions, 3764 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:18:17,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 389 transitions, 4640 flow [2024-06-04 14:18:19,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 389 transitions, 4482 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:18:19,307 INFO L231 Difference]: Finished difference. Result has 504 places, 362 transitions, 3699 flow [2024-06-04 14:18:19,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3606, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3699, PETRI_PLACES=504, PETRI_TRANSITIONS=362} [2024-06-04 14:18:19,308 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-04 14:18:19,308 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 362 transitions, 3699 flow [2024-06-04 14:18:19,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:19,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:19,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-04 14:18:19,308 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:19,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1141389316, now seen corresponding path program 53 times [2024-06-04 14:18:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:19,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737563985] [2024-06-04 14:18:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:20,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:20,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737563985] [2024-06-04 14:18:20,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737563985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:20,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:20,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067855068] [2024-06-04 14:18:20,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:20,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:20,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:20,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 362 transitions, 3699 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:20,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:20,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:20,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:21,736 INFO L124 PetriNetUnfolderBase]: 1175/2259 cut-off events. [2024-06-04 14:18:21,737 INFO L125 PetriNetUnfolderBase]: For 425880/425880 co-relation queries the response was YES. [2024-06-04 14:18:21,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16138 conditions, 2259 events. 1175/2259 cut-off events. For 425880/425880 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14495 event pairs, 280 based on Foata normal form. 2/2261 useless extension candidates. Maximal degree in co-relation 15924. Up to 1953 conditions per place. [2024-06-04 14:18:21,774 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 298 selfloop transitions, 82 changer transitions 0/382 dead transitions. [2024-06-04 14:18:21,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 382 transitions, 4593 flow [2024-06-04 14:18:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:18:21,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:18:21,775 INFO L175 Difference]: Start difference. First operand has 504 places, 362 transitions, 3699 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:18:21,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 382 transitions, 4593 flow [2024-06-04 14:18:23,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 382 transitions, 4468 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:18:23,790 INFO L231 Difference]: Finished difference. Result has 502 places, 363 transitions, 3822 flow [2024-06-04 14:18:23,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3822, PETRI_PLACES=502, PETRI_TRANSITIONS=363} [2024-06-04 14:18:23,791 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-04 14:18:23,791 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 363 transitions, 3822 flow [2024-06-04 14:18:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:23,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:23,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:23,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-04 14:18:23,791 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:23,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1608009618, now seen corresponding path program 21 times [2024-06-04 14:18:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:23,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695270257] [2024-06-04 14:18:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:23,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695270257] [2024-06-04 14:18:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695270257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:25,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:25,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:25,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689866823] [2024-06-04 14:18:25,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:25,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:25,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:25,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:26,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:26,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 363 transitions, 3822 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:26,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:26,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:26,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:27,134 INFO L124 PetriNetUnfolderBase]: 1199/2315 cut-off events. [2024-06-04 14:18:27,134 INFO L125 PetriNetUnfolderBase]: For 534257/534257 co-relation queries the response was YES. [2024-06-04 14:18:27,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16363 conditions, 2315 events. 1199/2315 cut-off events. For 534257/534257 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14927 event pairs, 312 based on Foata normal form. 16/2331 useless extension candidates. Maximal degree in co-relation 16150. Up to 1937 conditions per place. [2024-06-04 14:18:27,164 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 300 selfloop transitions, 65 changer transitions 23/390 dead transitions. [2024-06-04 14:18:27,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 390 transitions, 4718 flow [2024-06-04 14:18:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:18:27,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-04 14:18:27,164 INFO L175 Difference]: Start difference. First operand has 502 places, 363 transitions, 3822 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:18:27,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 390 transitions, 4718 flow [2024-06-04 14:18:29,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 390 transitions, 4480 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:29,295 INFO L231 Difference]: Finished difference. Result has 505 places, 351 transitions, 3612 flow [2024-06-04 14:18:29,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3612, PETRI_PLACES=505, PETRI_TRANSITIONS=351} [2024-06-04 14:18:29,295 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-04 14:18:29,295 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 351 transitions, 3612 flow [2024-06-04 14:18:29,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:29,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:29,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:29,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-04 14:18:29,296 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:29,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1615159458, now seen corresponding path program 22 times [2024-06-04 14:18:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:29,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259844542] [2024-06-04 14:18:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:31,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:31,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259844542] [2024-06-04 14:18:31,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259844542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:31,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:31,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:31,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890603215] [2024-06-04 14:18:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:31,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:31,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:31,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:31,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:31,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 351 transitions, 3612 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:31,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:31,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:31,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:32,600 INFO L124 PetriNetUnfolderBase]: 1127/2175 cut-off events. [2024-06-04 14:18:32,600 INFO L125 PetriNetUnfolderBase]: For 406356/406356 co-relation queries the response was YES. [2024-06-04 14:18:32,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14368 conditions, 2175 events. 1127/2175 cut-off events. For 406356/406356 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13896 event pairs, 287 based on Foata normal form. 10/2185 useless extension candidates. Maximal degree in co-relation 14154. Up to 1860 conditions per place. [2024-06-04 14:18:32,634 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 300 selfloop transitions, 63 changer transitions 12/377 dead transitions. [2024-06-04 14:18:32,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 377 transitions, 4476 flow [2024-06-04 14:18:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:18:32,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:18:32,635 INFO L175 Difference]: Start difference. First operand has 505 places, 351 transitions, 3612 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:18:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 377 transitions, 4476 flow [2024-06-04 14:18:34,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 377 transitions, 4326 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-04 14:18:34,373 INFO L231 Difference]: Finished difference. Result has 493 places, 347 transitions, 3560 flow [2024-06-04 14:18:34,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3462, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3560, PETRI_PLACES=493, PETRI_TRANSITIONS=347} [2024-06-04 14:18:34,374 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-04 14:18:34,374 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 347 transitions, 3560 flow [2024-06-04 14:18:34,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:34,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:34,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:34,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-04 14:18:34,374 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:34,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1135667460, now seen corresponding path program 23 times [2024-06-04 14:18:34,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:34,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048519455] [2024-06-04 14:18:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:34,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:36,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048519455] [2024-06-04 14:18:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048519455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:36,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:36,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:36,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178752171] [2024-06-04 14:18:36,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:36,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:36,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:36,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:36,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 347 transitions, 3560 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:36,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:36,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:36,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:37,459 INFO L124 PetriNetUnfolderBase]: 1084/2098 cut-off events. [2024-06-04 14:18:37,459 INFO L125 PetriNetUnfolderBase]: For 304338/304338 co-relation queries the response was YES. [2024-06-04 14:18:37,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12608 conditions, 2098 events. 1084/2098 cut-off events. For 304338/304338 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13381 event pairs, 252 based on Foata normal form. 10/2108 useless extension candidates. Maximal degree in co-relation 12398. Up to 1748 conditions per place. [2024-06-04 14:18:37,485 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 277 selfloop transitions, 82 changer transitions 11/372 dead transitions. [2024-06-04 14:18:37,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 372 transitions, 4410 flow [2024-06-04 14:18:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:18:37,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:18:37,485 INFO L175 Difference]: Start difference. First operand has 493 places, 347 transitions, 3560 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:18:37,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 372 transitions, 4410 flow [2024-06-04 14:18:38,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 372 transitions, 4280 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:18:38,730 INFO L231 Difference]: Finished difference. Result has 490 places, 344 transitions, 3578 flow [2024-06-04 14:18:38,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3578, PETRI_PLACES=490, PETRI_TRANSITIONS=344} [2024-06-04 14:18:38,731 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-04 14:18:38,731 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 344 transitions, 3578 flow [2024-06-04 14:18:38,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:38,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:38,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:38,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-04 14:18:38,731 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:38,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1580431242, now seen corresponding path program 24 times [2024-06-04 14:18:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996685104] [2024-06-04 14:18:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996685104] [2024-06-04 14:18:40,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996685104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:40,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:40,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719088793] [2024-06-04 14:18:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:40,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:40,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:40,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 344 transitions, 3578 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:40,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:40,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:40,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:41,458 INFO L124 PetriNetUnfolderBase]: 1106/2146 cut-off events. [2024-06-04 14:18:41,458 INFO L125 PetriNetUnfolderBase]: For 378471/378471 co-relation queries the response was YES. [2024-06-04 14:18:41,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14519 conditions, 2146 events. 1106/2146 cut-off events. For 378471/378471 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 13734 event pairs, 459 based on Foata normal form. 8/2154 useless extension candidates. Maximal degree in co-relation 14310. Up to 1894 conditions per place. [2024-06-04 14:18:41,490 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 340 selfloop transitions, 17 changer transitions 11/370 dead transitions. [2024-06-04 14:18:41,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 370 transitions, 4770 flow [2024-06-04 14:18:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:18:41,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:18:41,491 INFO L175 Difference]: Start difference. First operand has 490 places, 344 transitions, 3578 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:18:41,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 370 transitions, 4770 flow [2024-06-04 14:18:43,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 370 transitions, 4602 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:18:43,147 INFO L231 Difference]: Finished difference. Result has 487 places, 341 transitions, 3428 flow [2024-06-04 14:18:43,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3412, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3428, PETRI_PLACES=487, PETRI_TRANSITIONS=341} [2024-06-04 14:18:43,147 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-04 14:18:43,147 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 341 transitions, 3428 flow [2024-06-04 14:18:43,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:43,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:43,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:43,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-04 14:18:43,148 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:43,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash -393641520, now seen corresponding path program 54 times [2024-06-04 14:18:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651867107] [2024-06-04 14:18:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:44,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651867107] [2024-06-04 14:18:44,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651867107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:44,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:44,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:44,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448736942] [2024-06-04 14:18:44,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:44,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:44,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:44,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 341 transitions, 3428 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:44,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:44,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:45,787 INFO L124 PetriNetUnfolderBase]: 1084/2102 cut-off events. [2024-06-04 14:18:45,787 INFO L125 PetriNetUnfolderBase]: For 335940/335940 co-relation queries the response was YES. [2024-06-04 14:18:45,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14317 conditions, 2102 events. 1084/2102 cut-off events. For 335940/335940 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13421 event pairs, 236 based on Foata normal form. 2/2104 useless extension candidates. Maximal degree in co-relation 14108. Up to 1402 conditions per place. [2024-06-04 14:18:45,820 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 218 selfloop transitions, 144 changer transitions 0/364 dead transitions. [2024-06-04 14:18:45,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 364 transitions, 4304 flow [2024-06-04 14:18:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:18:45,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:18:45,821 INFO L175 Difference]: Start difference. First operand has 487 places, 341 transitions, 3428 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:18:45,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 364 transitions, 4304 flow [2024-06-04 14:18:47,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 364 transitions, 4270 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:18:47,498 INFO L231 Difference]: Finished difference. Result has 484 places, 342 transitions, 3764 flow [2024-06-04 14:18:47,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3764, PETRI_PLACES=484, PETRI_TRANSITIONS=342} [2024-06-04 14:18:47,498 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 452 predicate places. [2024-06-04 14:18:47,498 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 342 transitions, 3764 flow [2024-06-04 14:18:47,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:47,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:47,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:47,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-04 14:18:47,499 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:47,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash -113685846, now seen corresponding path program 25 times [2024-06-04 14:18:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:47,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536266579] [2024-06-04 14:18:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:48,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:48,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536266579] [2024-06-04 14:18:48,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536266579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:48,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:48,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189818594] [2024-06-04 14:18:48,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:48,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:48,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:48,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:48,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:48,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:48,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 342 transitions, 3764 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:48,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:48,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:48,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:49,767 INFO L124 PetriNetUnfolderBase]: 1125/2187 cut-off events. [2024-06-04 14:18:49,768 INFO L125 PetriNetUnfolderBase]: For 443694/443694 co-relation queries the response was YES. [2024-06-04 14:18:49,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16167 conditions, 2187 events. 1125/2187 cut-off events. For 443694/443694 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14051 event pairs, 472 based on Foata normal form. 8/2195 useless extension candidates. Maximal degree in co-relation 15960. Up to 1993 conditions per place. [2024-06-04 14:18:49,800 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 338 selfloop transitions, 21 changer transitions 8/369 dead transitions. [2024-06-04 14:18:49,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 369 transitions, 4956 flow [2024-06-04 14:18:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 14:18:49,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:18:49,801 INFO L175 Difference]: Start difference. First operand has 484 places, 342 transitions, 3764 flow. Second operand 12 states and 128 transitions. [2024-06-04 14:18:49,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 369 transitions, 4956 flow [2024-06-04 14:18:51,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 369 transitions, 4596 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 14:18:51,665 INFO L231 Difference]: Finished difference. Result has 488 places, 341 transitions, 3514 flow [2024-06-04 14:18:51,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3404, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3514, PETRI_PLACES=488, PETRI_TRANSITIONS=341} [2024-06-04 14:18:51,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-04 14:18:51,666 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 341 transitions, 3514 flow [2024-06-04 14:18:51,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:51,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:51,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:51,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-04 14:18:51,666 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:51,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash -400993170, now seen corresponding path program 55 times [2024-06-04 14:18:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75364552] [2024-06-04 14:18:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:53,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:53,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75364552] [2024-06-04 14:18:53,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75364552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:53,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:53,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:18:53,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215928405] [2024-06-04 14:18:53,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:53,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:18:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:18:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:18:53,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:53,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 341 transitions, 3514 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:53,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:53,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:53,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:53,977 INFO L124 PetriNetUnfolderBase]: 1105/2149 cut-off events. [2024-06-04 14:18:53,977 INFO L125 PetriNetUnfolderBase]: For 408511/408511 co-relation queries the response was YES. [2024-06-04 14:18:54,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15753 conditions, 2149 events. 1105/2149 cut-off events. For 408511/408511 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13716 event pairs, 251 based on Foata normal form. 2/2151 useless extension candidates. Maximal degree in co-relation 15544. Up to 1449 conditions per place. [2024-06-04 14:18:54,011 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 218 selfloop transitions, 142 changer transitions 0/362 dead transitions. [2024-06-04 14:18:54,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 362 transitions, 4380 flow [2024-06-04 14:18:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:18:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:18:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:18:54,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:18:54,012 INFO L175 Difference]: Start difference. First operand has 488 places, 341 transitions, 3514 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:18:54,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 362 transitions, 4380 flow [2024-06-04 14:18:55,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 362 transitions, 4333 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:18:55,673 INFO L231 Difference]: Finished difference. Result has 486 places, 342 transitions, 3837 flow [2024-06-04 14:18:55,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3467, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3837, PETRI_PLACES=486, PETRI_TRANSITIONS=342} [2024-06-04 14:18:55,673 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-04 14:18:55,673 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 342 transitions, 3837 flow [2024-06-04 14:18:55,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:55,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:18:55,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:18:55,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-04 14:18:55,674 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:18:55,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:18:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash -144014144, now seen corresponding path program 26 times [2024-06-04 14:18:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:18:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901004978] [2024-06-04 14:18:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:18:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:18:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:18:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:18:57,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:18:57,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901004978] [2024-06-04 14:18:57,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901004978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:18:57,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:18:57,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:18:57,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405552806] [2024-06-04 14:18:57,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:18:57,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:18:57,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:18:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:18:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:18:57,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:18:57,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 342 transitions, 3837 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:18:57,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:18:57,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:18:57,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:18:58,048 INFO L124 PetriNetUnfolderBase]: 1132/2210 cut-off events. [2024-06-04 14:18:58,048 INFO L125 PetriNetUnfolderBase]: For 497008/497008 co-relation queries the response was YES. [2024-06-04 14:18:58,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17006 conditions, 2210 events. 1132/2210 cut-off events. For 497008/497008 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14189 event pairs, 256 based on Foata normal form. 8/2218 useless extension candidates. Maximal degree in co-relation 16798. Up to 1371 conditions per place. [2024-06-04 14:18:58,080 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 226 selfloop transitions, 140 changer transitions 8/376 dead transitions. [2024-06-04 14:18:58,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 376 transitions, 5005 flow [2024-06-04 14:18:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:18:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:18:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:18:58,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:18:58,081 INFO L175 Difference]: Start difference. First operand has 486 places, 342 transitions, 3837 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:18:58,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 376 transitions, 5005 flow [2024-06-04 14:19:00,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 376 transitions, 4645 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-04 14:19:00,133 INFO L231 Difference]: Finished difference. Result has 489 places, 340 transitions, 3745 flow [2024-06-04 14:19:00,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3745, PETRI_PLACES=489, PETRI_TRANSITIONS=340} [2024-06-04 14:19:00,134 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 457 predicate places. [2024-06-04 14:19:00,134 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 340 transitions, 3745 flow [2024-06-04 14:19:00,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:00,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:19:00,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:19:00,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-04 14:19:00,134 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:19:00,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:19:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1487343906, now seen corresponding path program 27 times [2024-06-04 14:19:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:19:00,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861013435] [2024-06-04 14:19:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:19:00,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:19:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:19:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:19:01,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:19:01,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861013435] [2024-06-04 14:19:01,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861013435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:19:01,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:19:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:19:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169039845] [2024-06-04 14:19:01,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:19:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:19:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:19:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:19:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:19:02,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:19:02,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 340 transitions, 3745 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:02,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:19:02,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:19:02,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:19:02,868 INFO L124 PetriNetUnfolderBase]: 1092/2132 cut-off events. [2024-06-04 14:19:02,868 INFO L125 PetriNetUnfolderBase]: For 441448/441448 co-relation queries the response was YES. [2024-06-04 14:19:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15051 conditions, 2132 events. 1092/2132 cut-off events. For 441448/441448 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 13629 event pairs, 471 based on Foata normal form. 12/2144 useless extension candidates. Maximal degree in co-relation 14842. Up to 2012 conditions per place. [2024-06-04 14:19:02,902 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 330 selfloop transitions, 20 changer transitions 7/359 dead transitions. [2024-06-04 14:19:02,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 359 transitions, 4547 flow [2024-06-04 14:19:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:19:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:19:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:19:02,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:19:02,903 INFO L175 Difference]: Start difference. First operand has 489 places, 340 transitions, 3745 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:19:02,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 359 transitions, 4547 flow [2024-06-04 14:19:04,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 359 transitions, 4205 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-04 14:19:04,658 INFO L231 Difference]: Finished difference. Result has 487 places, 337 transitions, 3425 flow [2024-06-04 14:19:04,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3425, PETRI_PLACES=487, PETRI_TRANSITIONS=337} [2024-06-04 14:19:04,658 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-04 14:19:04,658 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 337 transitions, 3425 flow [2024-06-04 14:19:04,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:04,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:19:04,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:19:04,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-04 14:19:04,659 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:19:04,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:19:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash -400998750, now seen corresponding path program 56 times [2024-06-04 14:19:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:19:04,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765049877] [2024-06-04 14:19:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:19:04,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:19:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:19:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:19:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:19:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765049877] [2024-06-04 14:19:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765049877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:19:06,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:19:06,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:19:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393561119] [2024-06-04 14:19:06,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:19:06,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:19:06,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:19:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:19:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:19:06,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:19:06,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 337 transitions, 3425 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:06,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:19:06,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:19:06,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:19:07,078 INFO L124 PetriNetUnfolderBase]: 1062/2070 cut-off events. [2024-06-04 14:19:07,078 INFO L125 PetriNetUnfolderBase]: For 338831/338831 co-relation queries the response was YES. [2024-06-04 14:19:07,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14016 conditions, 2070 events. 1062/2070 cut-off events. For 338831/338831 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13156 event pairs, 454 based on Foata normal form. 2/2072 useless extension candidates. Maximal degree in co-relation 13808. Up to 1929 conditions per place. [2024-06-04 14:19:07,112 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 318 selfloop transitions, 33 changer transitions 0/353 dead transitions. [2024-06-04 14:19:07,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 353 transitions, 4173 flow [2024-06-04 14:19:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:19:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:19:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:19:07,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:19:07,113 INFO L175 Difference]: Start difference. First operand has 487 places, 337 transitions, 3425 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:19:07,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 353 transitions, 4173 flow [2024-06-04 14:19:09,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 353 transitions, 4127 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:19:09,015 INFO L231 Difference]: Finished difference. Result has 487 places, 337 transitions, 3449 flow [2024-06-04 14:19:09,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3379, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3449, PETRI_PLACES=487, PETRI_TRANSITIONS=337} [2024-06-04 14:19:09,016 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-04 14:19:09,016 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 337 transitions, 3449 flow [2024-06-04 14:19:09,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:09,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:19:09,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:19:09,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-04 14:19:09,016 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:19:09,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:19:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1585891960, now seen corresponding path program 28 times [2024-06-04 14:19:09,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:19:09,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605647792] [2024-06-04 14:19:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:19:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:19:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:19:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:19:10,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:19:10,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605647792] [2024-06-04 14:19:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605647792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:19:10,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:19:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:19:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868565749] [2024-06-04 14:19:10,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:19:10,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:19:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:19:10,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:19:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:19:11,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:19:11,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 337 transitions, 3449 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:11,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:19:11,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:19:11,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:19:12,007 INFO L124 PetriNetUnfolderBase]: 1078/2106 cut-off events. [2024-06-04 14:19:12,008 INFO L125 PetriNetUnfolderBase]: For 404883/404883 co-relation queries the response was YES. [2024-06-04 14:19:12,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 2106 events. 1078/2106 cut-off events. For 404883/404883 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 13423 event pairs, 460 based on Foata normal form. 10/2116 useless extension candidates. Maximal degree in co-relation 14026. Up to 1931 conditions per place. [2024-06-04 14:19:12,039 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 320 selfloop transitions, 26 changer transitions 11/359 dead transitions. [2024-06-04 14:19:12,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 359 transitions, 4265 flow [2024-06-04 14:19:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:19:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:19:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:19:12,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:19:12,040 INFO L175 Difference]: Start difference. First operand has 487 places, 337 transitions, 3449 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:19:12,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 359 transitions, 4265 flow [2024-06-04 14:19:13,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 359 transitions, 4010 flow, removed 40 selfloop flow, removed 11 redundant places. [2024-06-04 14:19:13,846 INFO L231 Difference]: Finished difference. Result has 487 places, 330 transitions, 3198 flow [2024-06-04 14:19:13,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3198, PETRI_PLACES=487, PETRI_TRANSITIONS=330} [2024-06-04 14:19:13,846 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-04 14:19:13,846 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 330 transitions, 3198 flow [2024-06-04 14:19:13,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:13,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:19:13,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:19:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2024-06-04 14:19:13,846 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:19:13,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:19:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2056613824, now seen corresponding path program 29 times [2024-06-04 14:19:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:19:13,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137197842] [2024-06-04 14:19:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:19:13,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:19:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:19:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:19:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:19:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137197842] [2024-06-04 14:19:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137197842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:19:15,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:19:15,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:19:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495858596] [2024-06-04 14:19:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:19:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:19:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:19:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:19:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:19:15,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:19:15,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 330 transitions, 3198 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:15,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:19:15,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:19:15,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:19:16,795 INFO L124 PetriNetUnfolderBase]: 1042/2046 cut-off events. [2024-06-04 14:19:16,796 INFO L125 PetriNetUnfolderBase]: For 377881/377881 co-relation queries the response was YES. [2024-06-04 14:19:16,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13109 conditions, 2046 events. 1042/2046 cut-off events. For 377881/377881 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13034 event pairs, 454 based on Foata normal form. 10/2056 useless extension candidates. Maximal degree in co-relation 12900. Up to 1899 conditions per place. [2024-06-04 14:19:16,825 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 316 selfloop transitions, 25 changer transitions 9/352 dead transitions. [2024-06-04 14:19:16,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 352 transitions, 3996 flow [2024-06-04 14:19:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:19:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:19:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:19:16,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-04 14:19:16,826 INFO L175 Difference]: Start difference. First operand has 487 places, 330 transitions, 3198 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:19:16,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 352 transitions, 3996 flow [2024-06-04 14:19:18,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 352 transitions, 3929 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-04 14:19:18,691 INFO L231 Difference]: Finished difference. Result has 482 places, 327 transitions, 3165 flow [2024-06-04 14:19:18,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3165, PETRI_PLACES=482, PETRI_TRANSITIONS=327} [2024-06-04 14:19:18,691 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-04 14:19:18,691 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 327 transitions, 3165 flow [2024-06-04 14:19:18,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:18,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:19:18,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:19:18,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2024-06-04 14:19:18,692 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:19:18,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:19:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2134690414, now seen corresponding path program 30 times [2024-06-04 14:19:18,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:19:18,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117706274] [2024-06-04 14:19:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:19:18,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:19:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:19:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:19:20,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:19:20,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117706274] [2024-06-04 14:19:20,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117706274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:19:20,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:19:20,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:19:20,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106959187] [2024-06-04 14:19:20,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:19:20,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:19:20,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:19:20,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:19:20,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:19:20,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:19:20,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 327 transitions, 3165 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:20,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:19:20,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:19:20,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:19:21,485 INFO L124 PetriNetUnfolderBase]: 1028/2024 cut-off events. [2024-06-04 14:19:21,485 INFO L125 PetriNetUnfolderBase]: For 352114/352114 co-relation queries the response was YES. [2024-06-04 14:19:21,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12925 conditions, 2024 events. 1028/2024 cut-off events. For 352114/352114 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12859 event pairs, 446 based on Foata normal form. 8/2032 useless extension candidates. Maximal degree in co-relation 12718. Up to 1844 conditions per place. [2024-06-04 14:19:21,516 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 325 selfloop transitions, 17 changer transitions 8/352 dead transitions. [2024-06-04 14:19:21,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 352 transitions, 4245 flow [2024-06-04 14:19:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:19:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:19:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:19:21,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-04 14:19:21,517 INFO L175 Difference]: Start difference. First operand has 482 places, 327 transitions, 3165 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:19:21,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 352 transitions, 4245 flow [2024-06-04 14:19:23,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 352 transitions, 4185 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:19:23,310 INFO L231 Difference]: Finished difference. Result has 479 places, 325 transitions, 3130 flow [2024-06-04 14:19:23,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3130, PETRI_PLACES=479, PETRI_TRANSITIONS=325} [2024-06-04 14:19:23,310 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 447 predicate places. [2024-06-04 14:19:23,311 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 325 transitions, 3130 flow [2024-06-04 14:19:23,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:23,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:19:23,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:19:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2024-06-04 14:19:23,311 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:19:23,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:19:23,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2143954144, now seen corresponding path program 31 times [2024-06-04 14:19:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:19:23,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979466410] [2024-06-04 14:19:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:19:23,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:19:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:19:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:19:24,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:19:24,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979466410] [2024-06-04 14:19:24,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979466410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:19:24,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:19:24,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:19:24,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611282949] [2024-06-04 14:19:24,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:19:24,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:19:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:19:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:19:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:19:24,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:19:24,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 325 transitions, 3130 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:19:24,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:19:24,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:19:24,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:19:25,810 INFO L124 PetriNetUnfolderBase]: 991/1953 cut-off events. [2024-06-04 14:19:25,810 INFO L125 PetriNetUnfolderBase]: For 287940/287940 co-relation queries the response was YES. [2024-06-04 14:19:25,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11354 conditions, 1953 events. 991/1953 cut-off events. For 287940/287940 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12379 event pairs, 437 based on Foata normal form. 10/1963 useless extension candidates. Maximal degree in co-relation 11148. Up to 1844 conditions per place. [2024-06-04 14:19:25,835 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 309 selfloop transitions, 10 changer transitions 25/346 dead transitions. [2024-06-04 14:19:25,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 346 transitions, 3910 flow [2024-06-04 14:19:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:19:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:19:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-06-04 14:19:25,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2937062937062937 [2024-06-04 14:19:25,835 INFO L175 Difference]: Start difference. First operand has 479 places, 325 transitions, 3130 flow. Second operand 13 states and 126 transitions. [2024-06-04 14:19:25,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 346 transitions, 3910 flow Killed by 15