./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_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/rfi007_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/rfi007_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi007_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 [2024-06-03 20:00:14,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:00:14,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:00:14,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:00:14,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:00:14,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:00:14,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:00:14,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:00:14,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:00:14,622 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:00:14,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:00:14,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:00:14,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:00:14,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:00:14,624 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:00:14,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:00:14,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:00:14,625 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:00:14,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:00:14,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:00:14,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:00:14,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:00:14,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:00:14,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:00:14,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:00:14,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:00:14,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:00:14,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:00:14,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:00:14,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:00:14,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:00:14,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:00:14,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:00:14,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:00:14,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:00:14,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:00:14,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:00:14,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:00:14,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:00:14,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:00:14,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:00:14,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:00:14,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:00:14,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:00:14,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:00:14,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:00:14,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:00:14,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:00:14,879 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:00:14,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-03 20:00:15,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:00:16,068 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:00:16,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-03 20:00:16,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7eef939/b9d9b8461461454295b94f1aa6fbe3d6/FLAG71e2d1ec6 [2024-06-03 20:00:16,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7eef939/b9d9b8461461454295b94f1aa6fbe3d6 [2024-06-03 20:00:16,098 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:00:16,098 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:00:16,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi007_tso.yml/witness.yml [2024-06-03 20:00:16,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:00:16,198 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:00:16,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:00:16,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:00:16,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:00:16,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:00:16" (1/2) ... [2024-06-03 20:00:16,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2520d966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:16, skipping insertion in model container [2024-06-03 20:00:16,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:00:16" (1/2) ... [2024-06-03 20:00:16,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d045bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:16, skipping insertion in model container [2024-06-03 20:00:16,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:00:16" (2/2) ... [2024-06-03 20:00:16,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2520d966 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16, skipping insertion in model container [2024-06-03 20:00:16,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:00:16" (2/2) ... [2024-06-03 20:00:16,208 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:00:16,262 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:00:16,263 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-03 20:00:16,263 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)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)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_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 || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-03 20:00:16,263 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:00:16,264 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-03 20:00:16,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:00:16,616 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:00:16,625 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:00:16,732 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:00:16,760 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:00:16,760 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16 WrapperNode [2024-06-03 20:00:16,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:00:16,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:00:16,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:00:16,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:00:16,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,804 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-03 20:00:16,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:00:16,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:00:16,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:00:16,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:00:16,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,816 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,829 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]. [2024-06-03 20:00:16,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:00:16,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:00:16,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:00:16,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:00:16,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (1/1) ... [2024-06-03 20:00:16,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:00:16,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:00:16,894 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) [2024-06-03 20:00:16,910 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 [2024-06-03 20:00:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 20:00:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:00:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 20:00:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 20:00:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 20:00:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 20:00:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:00:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 20:00:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:00:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:00:16,941 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:00:17,062 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:00:17,067 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:00:17,318 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:00:17,319 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:00:17,453 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:00:17,453 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 20:00:17,455 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:00:17 BoogieIcfgContainer [2024-06-03 20:00:17,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:00:17,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:00:17,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:00:17,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:00:17,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:00:16" (1/4) ... [2024-06-03 20:00:17,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f82ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:00:17, skipping insertion in model container [2024-06-03 20:00:17,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:00:16" (2/4) ... [2024-06-03 20:00:17,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f82ada and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:00:17, skipping insertion in model container [2024-06-03 20:00:17,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:16" (3/4) ... [2024-06-03 20:00:17,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f82ada and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:00:17, skipping insertion in model container [2024-06-03 20:00:17,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:00:17" (4/4) ... [2024-06-03 20:00:17,466 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_tso.i [2024-06-03 20:00:17,479 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:00:17,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:00:17,479 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:00:17,517 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 20:00:17,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 20:00:17,565 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-03 20:00:17,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:00:17,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 20:00:17,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 20:00:17,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-03 20:00:17,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:00:17,585 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;@3cdd43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:00:17,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:00:17,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:00:17,589 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 20:00:17,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:00:17,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:17,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:00:17,590 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)] === [2024-06-03 20:00:17,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1606705191, now seen corresponding path program 1 times [2024-06-03 20:00:17,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:17,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243206479] [2024-06-03 20:00:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:17,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243206479] [2024-06-03 20:00:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243206479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:18,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:18,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:00:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82990065] [2024-06-03 20:00:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:18,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:00:18,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:00:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:00:18,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 20:00:18,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 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) [2024-06-03 20:00:18,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:18,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 20:00:18,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:18,607 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-03 20:00:18,607 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 20:00:18,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 309 events. 162/309 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1128 event pairs, 97 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 608. Up to 288 conditions per place. [2024-06-03 20:00:18,612 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-03 20:00:18,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-03 20:00:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:00:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:00:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-03 20:00:18,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-03 20:00:18,622 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-03 20:00:18,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-03 20:00:18,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:00:18,625 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-03 20:00:18,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-03 20:00:18,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-03 20:00:18,630 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-03 20:00:18,630 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) [2024-06-03 20:00:18,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:18,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:18,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:00:18,631 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)] === [2024-06-03 20:00:18,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2144571448, now seen corresponding path program 1 times [2024-06-03 20:00:18,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:18,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701630109] [2024-06-03 20:00:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:18,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701630109] [2024-06-03 20:00:19,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701630109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:19,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:19,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:00:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966346263] [2024-06-03 20:00:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:19,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:00:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:00:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:00:19,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 20:00:19,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:19,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:19,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 20:00:19,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:19,211 INFO L124 PetriNetUnfolderBase]: 186/337 cut-off events. [2024-06-03 20:00:19,212 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-03 20:00:19,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 337 events. 186/337 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1172 event pairs, 94 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-03 20:00:19,216 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-03 20:00:19,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 163 flow [2024-06-03 20:00:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:00:19,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:00:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-06-03 20:00:19,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-06-03 20:00:19,219 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 59 transitions. [2024-06-03 20:00:19,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 163 flow [2024-06-03 20:00:19,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:00:19,223 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-03 20:00:19,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-03 20:00:19,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-03 20:00:19,224 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-03 20:00:19,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:19,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:19,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:19,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:00:19,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:00:19,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2057206554, now seen corresponding path program 1 times [2024-06-03 20:00:19,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:19,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784137648] [2024-06-03 20:00:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:19,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784137648] [2024-06-03 20:00:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784137648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:19,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:00:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103367446] [2024-06-03 20:00:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:00:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:00:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:00:19,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 20:00:19,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:19,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:19,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 20:00:19,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:19,983 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-03 20:00:19,984 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-03 20:00:19,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 327 events. 180/327 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1119 event pairs, 52 based on Foata normal form. 4/330 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-03 20:00:19,986 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-03 20:00:19,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 215 flow [2024-06-03 20:00:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:00:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:00:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-06-03 20:00:19,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-03 20:00:19,989 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 72 transitions. [2024-06-03 20:00:19,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 215 flow [2024-06-03 20:00:19,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 20:00:19,991 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-03 20:00:19,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-03 20:00:19,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-03 20:00:19,993 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-03 20:00:19,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:19,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:19,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:19,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:00:19,994 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)] === [2024-06-03 20:00:19,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1290578649, now seen corresponding path program 1 times [2024-06-03 20:00:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:19,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771097360] [2024-06-03 20:00:19,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:19,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:20,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:20,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771097360] [2024-06-03 20:00:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771097360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:20,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:20,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:00:20,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180801115] [2024-06-03 20:00:20,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:20,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:00:20,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:00:20,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:00:20,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 20:00:20,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-03 20:00:20,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:20,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 20:00:20,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:20,996 INFO L124 PetriNetUnfolderBase]: 176/319 cut-off events. [2024-06-03 20:00:20,997 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-03 20:00:20,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 319 events. 176/319 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1082 event pairs, 30 based on Foata normal form. 4/322 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-03 20:00:20,999 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-03 20:00:20,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 229 flow [2024-06-03 20:00:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:00:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:00:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-03 20:00:21,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-03 20:00:21,003 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 79 transitions. [2024-06-03 20:00:21,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 229 flow [2024-06-03 20:00:21,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 214 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:21,005 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-03 20:00:21,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-03 20:00:21,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-03 20:00:21,006 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-03 20:00:21,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-03 20:00:21,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:21,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:21,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:00:21,007 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)] === [2024-06-03 20:00:21,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 672537551, now seen corresponding path program 1 times [2024-06-03 20:00:21,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:21,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632882250] [2024-06-03 20:00:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:21,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:21,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:21,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632882250] [2024-06-03 20:00:21,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632882250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:21,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:21,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:00:21,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472663199] [2024-06-03 20:00:21,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:21,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:00:21,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:21,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:00:21,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:00:21,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 20:00:21,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2024-06-03 20:00:21,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:21,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 20:00:21,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:21,632 INFO L124 PetriNetUnfolderBase]: 147/283 cut-off events. [2024-06-03 20:00:21,632 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-03 20:00:21,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 283 events. 147/283 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 985 event pairs, 53 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-03 20:00:21,634 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-03 20:00:21,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 198 flow [2024-06-03 20:00:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:00:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:00:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-03 20:00:21,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 20:00:21,636 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 59 transitions. [2024-06-03 20:00:21,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 198 flow [2024-06-03 20:00:21,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 178 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:21,640 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-03 20:00:21,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-03 20:00:21,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-03 20:00:21,645 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-03 20:00:21,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2024-06-03 20:00:21,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:21,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:21,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:00:21,646 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)] === [2024-06-03 20:00:21,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:21,647 INFO L85 PathProgramCache]: Analyzing trace with hash -616340437, now seen corresponding path program 1 times [2024-06-03 20:00:21,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:21,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556035623] [2024-06-03 20:00:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:22,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556035623] [2024-06-03 20:00:22,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556035623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:22,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:22,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:00:22,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111471978] [2024-06-03 20:00:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:22,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:00:22,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:00:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:00:22,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 20:00:22,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:22,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:22,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 20:00:22,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:22,646 INFO L124 PetriNetUnfolderBase]: 145/280 cut-off events. [2024-06-03 20:00:22,646 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2024-06-03 20:00:22,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 280 events. 145/280 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 965 event pairs, 52 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 816. Up to 253 conditions per place. [2024-06-03 20:00:22,648 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-03 20:00:22,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 215 flow [2024-06-03 20:00:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:00:22,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:00:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-03 20:00:22,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-03 20:00:22,649 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 68 transitions. [2024-06-03 20:00:22,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 215 flow [2024-06-03 20:00:22,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:22,651 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-03 20:00:22,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, 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=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-03 20:00:22,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-03 20:00:22,652 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-03 20:00:22,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:00:22,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:22,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:22,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:00:22,652 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)] === [2024-06-03 20:00:22,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:22,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1661963166, now seen corresponding path program 1 times [2024-06-03 20:00:22,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:22,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376237150] [2024-06-03 20:00:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:22,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:23,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376237150] [2024-06-03 20:00:23,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376237150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:23,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:23,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:00:23,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383462503] [2024-06-03 20:00:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:00:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:00:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:00:23,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:23,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 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) [2024-06-03 20:00:23,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:23,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:23,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:23,334 INFO L124 PetriNetUnfolderBase]: 173/315 cut-off events. [2024-06-03 20:00:23,334 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-03 20:00:23,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 315 events. 173/315 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1050 event pairs, 62 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 1006. Up to 294 conditions per place. [2024-06-03 20:00:23,336 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-03 20:00:23,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 257 flow [2024-06-03 20:00:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:00:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:00:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-03 20:00:23,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 20:00:23,337 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 66 transitions. [2024-06-03 20:00:23,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 257 flow [2024-06-03 20:00:23,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 240 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:23,339 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-03 20:00:23,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-03 20:00:23,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-03 20:00:23,339 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-03 20:00:23,340 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) [2024-06-03 20:00:23,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:23,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:23,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:00:23,340 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)] === [2024-06-03 20:00:23,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2063514030, now seen corresponding path program 2 times [2024-06-03 20:00:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:23,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760212478] [2024-06-03 20:00:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760212478] [2024-06-03 20:00:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760212478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:23,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:23,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:00:23,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140370425] [2024-06-03 20:00:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:23,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:00:23,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:23,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:00:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:00:23,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:23,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 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) [2024-06-03 20:00:23,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:23,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:23,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:24,050 INFO L124 PetriNetUnfolderBase]: 171/313 cut-off events. [2024-06-03 20:00:24,050 INFO L125 PetriNetUnfolderBase]: For 969/972 co-relation queries the response was YES. [2024-06-03 20:00:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 313 events. 171/313 cut-off events. For 969/972 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1057 event pairs, 66 based on Foata normal form. 3/314 useless extension candidates. Maximal degree in co-relation 1055. Up to 285 conditions per place. [2024-06-03 20:00:24,052 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 29 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-03 20:00:24,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 267 flow [2024-06-03 20:00:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:00:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:00:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-03 20:00:24,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-03 20:00:24,053 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 6 states and 65 transitions. [2024-06-03 20:00:24,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 267 flow [2024-06-03 20:00:24,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 250 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:24,055 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 187 flow [2024-06-03 20:00:24,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-03 20:00:24,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-03 20:00:24,056 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 187 flow [2024-06-03 20:00:24,056 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) [2024-06-03 20:00:24,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:24,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:24,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:00:24,056 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)] === [2024-06-03 20:00:24,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1214428462, now seen corresponding path program 1 times [2024-06-03 20:00:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:24,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932278267] [2024-06-03 20:00:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:24,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:24,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:24,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932278267] [2024-06-03 20:00:24,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932278267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:24,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:24,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:24,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89895402] [2024-06-03 20:00:24,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:24,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:24,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:24,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:24,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:24,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:24,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 187 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) [2024-06-03 20:00:24,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:24,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:24,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:24,869 INFO L124 PetriNetUnfolderBase]: 193/353 cut-off events. [2024-06-03 20:00:24,869 INFO L125 PetriNetUnfolderBase]: For 1305/1305 co-relation queries the response was YES. [2024-06-03 20:00:24,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 353 events. 193/353 cut-off events. For 1305/1305 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1244 event pairs, 44 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 1246. Up to 291 conditions per place. [2024-06-03 20:00:24,871 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-03 20:00:24,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 387 flow [2024-06-03 20:00:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 20:00:24,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-03 20:00:24,872 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 187 flow. Second operand 8 states and 89 transitions. [2024-06-03 20:00:24,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 387 flow [2024-06-03 20:00:24,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:24,874 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 263 flow [2024-06-03 20:00:24,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-03 20:00:24,875 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-03 20:00:24,875 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 263 flow [2024-06-03 20:00:24,875 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) [2024-06-03 20:00:24,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:24,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:24,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:00:24,875 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)] === [2024-06-03 20:00:24,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash -632825254, now seen corresponding path program 2 times [2024-06-03 20:00:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:24,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742497111] [2024-06-03 20:00:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:25,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742497111] [2024-06-03 20:00:25,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742497111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:25,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:25,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:25,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26505957] [2024-06-03 20:00:25,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:25,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:25,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 263 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) [2024-06-03 20:00:25,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:25,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:25,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:25,693 INFO L124 PetriNetUnfolderBase]: 199/363 cut-off events. [2024-06-03 20:00:25,693 INFO L125 PetriNetUnfolderBase]: For 1745/1745 co-relation queries the response was YES. [2024-06-03 20:00:25,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 363 events. 199/363 cut-off events. For 1745/1745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1285 event pairs, 43 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1435. Up to 293 conditions per place. [2024-06-03 20:00:25,695 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 21 changer transitions 0/63 dead transitions. [2024-06-03 20:00:25,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 459 flow [2024-06-03 20:00:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:00:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:00:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 20:00:25,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-03 20:00:25,696 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 263 flow. Second operand 7 states and 79 transitions. [2024-06-03 20:00:25,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 459 flow [2024-06-03 20:00:25,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 434 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:25,699 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 336 flow [2024-06-03 20:00:25,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-03 20:00:25,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-03 20:00:25,699 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 336 flow [2024-06-03 20:00:25,699 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) [2024-06-03 20:00:25,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:25,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:25,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 20:00:25,700 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)] === [2024-06-03 20:00:25,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash 395682570, now seen corresponding path program 1 times [2024-06-03 20:00:25,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:25,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217942920] [2024-06-03 20:00:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:25,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:26,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:26,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217942920] [2024-06-03 20:00:26,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217942920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:26,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:26,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636319308] [2024-06-03 20:00:26,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:26,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:26,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:26,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 336 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) [2024-06-03 20:00:26,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:26,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:26,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:26,562 INFO L124 PetriNetUnfolderBase]: 202/368 cut-off events. [2024-06-03 20:00:26,562 INFO L125 PetriNetUnfolderBase]: For 2175/2175 co-relation queries the response was YES. [2024-06-03 20:00:26,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1612 conditions, 368 events. 202/368 cut-off events. For 2175/2175 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1312 event pairs, 45 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1582. Up to 337 conditions per place. [2024-06-03 20:00:26,565 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-03 20:00:26,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 496 flow [2024-06-03 20:00:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:00:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:00:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-03 20:00:26,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-03 20:00:26,566 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 336 flow. Second operand 7 states and 74 transitions. [2024-06-03 20:00:26,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 496 flow [2024-06-03 20:00:26,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 463 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:26,571 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 346 flow [2024-06-03 20:00:26,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-03 20:00:26,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-03 20:00:26,571 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 346 flow [2024-06-03 20:00:26,572 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) [2024-06-03 20:00:26,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:26,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:26,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 20:00:26,572 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)] === [2024-06-03 20:00:26,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash -632705284, now seen corresponding path program 3 times [2024-06-03 20:00:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840314322] [2024-06-03 20:00:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:27,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:27,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840314322] [2024-06-03 20:00:27,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840314322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:27,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:27,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:27,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385961149] [2024-06-03 20:00:27,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:27,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:27,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:27,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:27,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 346 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) [2024-06-03 20:00:27,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:27,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:27,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:27,280 INFO L124 PetriNetUnfolderBase]: 213/386 cut-off events. [2024-06-03 20:00:27,280 INFO L125 PetriNetUnfolderBase]: For 2257/2257 co-relation queries the response was YES. [2024-06-03 20:00:27,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 386 events. 213/386 cut-off events. For 2257/2257 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1370 event pairs, 47 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1635. Up to 299 conditions per place. [2024-06-03 20:00:27,282 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 43 selfloop transitions, 23 changer transitions 0/68 dead transitions. [2024-06-03 20:00:27,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 564 flow [2024-06-03 20:00:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:00:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:00:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-03 20:00:27,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-03 20:00:27,284 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 346 flow. Second operand 7 states and 80 transitions. [2024-06-03 20:00:27,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 564 flow [2024-06-03 20:00:27,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 537 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 20:00:27,289 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 406 flow [2024-06-03 20:00:27,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-03 20:00:27,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-03 20:00:27,289 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 406 flow [2024-06-03 20:00:27,290 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) [2024-06-03 20:00:27,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:27,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:27,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 20:00:27,290 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)] === [2024-06-03 20:00:27,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash 402348810, now seen corresponding path program 2 times [2024-06-03 20:00:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625410710] [2024-06-03 20:00:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:28,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625410710] [2024-06-03 20:00:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625410710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:28,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:28,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28603402] [2024-06-03 20:00:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:28,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:28,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:28,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 406 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) [2024-06-03 20:00:28,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:28,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:28,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:28,235 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-03 20:00:28,235 INFO L125 PetriNetUnfolderBase]: For 2774/2780 co-relation queries the response was YES. [2024-06-03 20:00:28,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 392 events. 216/392 cut-off events. For 2774/2780 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1402 event pairs, 49 based on Foata normal form. 5/394 useless extension candidates. Maximal degree in co-relation 1751. Up to 344 conditions per place. [2024-06-03 20:00:28,238 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-03 20:00:28,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 622 flow [2024-06-03 20:00:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:00:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:00:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-03 20:00:28,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-03 20:00:28,240 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 406 flow. Second operand 7 states and 75 transitions. [2024-06-03 20:00:28,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 622 flow [2024-06-03 20:00:28,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 595 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:28,244 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 468 flow [2024-06-03 20:00:28,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-03 20:00:28,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-03 20:00:28,245 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 468 flow [2024-06-03 20:00:28,245 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) [2024-06-03 20:00:28,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:28,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:28,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 20:00:28,245 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)] === [2024-06-03 20:00:28,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash 328153898, now seen corresponding path program 3 times [2024-06-03 20:00:28,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:28,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482628658] [2024-06-03 20:00:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482628658] [2024-06-03 20:00:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482628658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:29,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:29,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523566868] [2024-06-03 20:00:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:29,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:29,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:29,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:29,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 468 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) [2024-06-03 20:00:29,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:29,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:29,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:29,204 INFO L124 PetriNetUnfolderBase]: 214/389 cut-off events. [2024-06-03 20:00:29,204 INFO L125 PetriNetUnfolderBase]: For 3057/3063 co-relation queries the response was YES. [2024-06-03 20:00:29,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 389 events. 214/389 cut-off events. For 3057/3063 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1384 event pairs, 49 based on Foata normal form. 5/391 useless extension candidates. Maximal degree in co-relation 1818. Up to 351 conditions per place. [2024-06-03 20:00:29,207 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-03 20:00:29,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 635 flow [2024-06-03 20:00:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:00:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:00:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-03 20:00:29,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33640552995391704 [2024-06-03 20:00:29,208 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 468 flow. Second operand 7 states and 73 transitions. [2024-06-03 20:00:29,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 635 flow [2024-06-03 20:00:29,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 603 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:29,213 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 480 flow [2024-06-03 20:00:29,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-03 20:00:29,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-03 20:00:29,213 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 480 flow [2024-06-03 20:00:29,214 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) [2024-06-03 20:00:29,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:29,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:29,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 20:00:29,214 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)] === [2024-06-03 20:00:29,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash 23391782, now seen corresponding path program 4 times [2024-06-03 20:00:29,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:29,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356615215] [2024-06-03 20:00:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:29,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:29,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:29,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356615215] [2024-06-03 20:00:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356615215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:29,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202955057] [2024-06-03 20:00:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:29,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:29,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:29,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:29,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 480 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) [2024-06-03 20:00:29,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:29,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:29,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:29,963 INFO L124 PetriNetUnfolderBase]: 210/383 cut-off events. [2024-06-03 20:00:29,964 INFO L125 PetriNetUnfolderBase]: For 3381/3387 co-relation queries the response was YES. [2024-06-03 20:00:29,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 383 events. 210/383 cut-off events. For 3381/3387 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1377 event pairs, 55 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1812. Up to 283 conditions per place. [2024-06-03 20:00:29,966 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 27 changer transitions 0/74 dead transitions. [2024-06-03 20:00:29,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 698 flow [2024-06-03 20:00:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:00:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:00:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 20:00:29,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-03 20:00:29,968 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 480 flow. Second operand 7 states and 79 transitions. [2024-06-03 20:00:29,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 698 flow [2024-06-03 20:00:29,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 667 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:00:29,972 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 532 flow [2024-06-03 20:00:29,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=532, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-03 20:00:29,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-03 20:00:29,973 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 532 flow [2024-06-03 20:00:29,973 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) [2024-06-03 20:00:29,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:29,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:29,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 20:00:29,973 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)] === [2024-06-03 20:00:29,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:29,974 INFO L85 PathProgramCache]: Analyzing trace with hash 402357738, now seen corresponding path program 1 times [2024-06-03 20:00:29,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:29,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662374072] [2024-06-03 20:00:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:29,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662374072] [2024-06-03 20:00:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662374072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:31,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:31,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773873074] [2024-06-03 20:00:31,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:31,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:31,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:31,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 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) [2024-06-03 20:00:31,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:31,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:31,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:31,282 INFO L124 PetriNetUnfolderBase]: 208/379 cut-off events. [2024-06-03 20:00:31,282 INFO L125 PetriNetUnfolderBase]: For 3657/3657 co-relation queries the response was YES. [2024-06-03 20:00:31,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 379 events. 208/379 cut-off events. For 3657/3657 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1357 event pairs, 48 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1877. Up to 355 conditions per place. [2024-06-03 20:00:31,285 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-03 20:00:31,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 706 flow [2024-06-03 20:00:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-03 20:00:31,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-03 20:00:31,286 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 532 flow. Second operand 8 states and 79 transitions. [2024-06-03 20:00:31,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 706 flow [2024-06-03 20:00:31,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 639 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-03 20:00:31,291 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 508 flow [2024-06-03 20:00:31,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2024-06-03 20:00:31,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-03 20:00:31,292 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 508 flow [2024-06-03 20:00:31,292 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) [2024-06-03 20:00:31,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:31,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:31,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 20:00:31,293 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)] === [2024-06-03 20:00:31,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash 577446209, now seen corresponding path program 1 times [2024-06-03 20:00:31,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:31,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281267718] [2024-06-03 20:00:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:31,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:31,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:31,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281267718] [2024-06-03 20:00:31,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281267718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:31,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:31,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939951181] [2024-06-03 20:00:31,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:31,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:32,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:32,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 508 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) [2024-06-03 20:00:32,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:32,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:32,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:32,210 INFO L124 PetriNetUnfolderBase]: 206/376 cut-off events. [2024-06-03 20:00:32,211 INFO L125 PetriNetUnfolderBase]: For 3702/3702 co-relation queries the response was YES. [2024-06-03 20:00:32,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 376 events. 206/376 cut-off events. For 3702/3702 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1336 event pairs, 43 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1837. Up to 301 conditions per place. [2024-06-03 20:00:32,213 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 56 selfloop transitions, 21 changer transitions 0/79 dead transitions. [2024-06-03 20:00:32,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 702 flow [2024-06-03 20:00:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:00:32,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:00:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 20:00:32,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-03 20:00:32,216 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 508 flow. Second operand 7 states and 79 transitions. [2024-06-03 20:00:32,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 702 flow [2024-06-03 20:00:32,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 647 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:32,222 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 508 flow [2024-06-03 20:00:32,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2024-06-03 20:00:32,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-03 20:00:32,222 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 508 flow [2024-06-03 20:00:32,223 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) [2024-06-03 20:00:32,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:32,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 20:00:32,223 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)] === [2024-06-03 20:00:32,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1857254538, now seen corresponding path program 1 times [2024-06-03 20:00:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467345110] [2024-06-03 20:00:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:32,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467345110] [2024-06-03 20:00:32,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467345110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:32,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:32,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:32,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035350836] [2024-06-03 20:00:32,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:32,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:32,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:33,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:33,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 508 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) [2024-06-03 20:00:33,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:33,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:33,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:33,242 INFO L124 PetriNetUnfolderBase]: 212/386 cut-off events. [2024-06-03 20:00:33,242 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-06-03 20:00:33,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 386 events. 212/386 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1380 event pairs, 39 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1917. Up to 304 conditions per place. [2024-06-03 20:00:33,245 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-03 20:00:33,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 732 flow [2024-06-03 20:00:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 20:00:33,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 20:00:33,246 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 508 flow. Second operand 8 states and 88 transitions. [2024-06-03 20:00:33,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 732 flow [2024-06-03 20:00:33,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 684 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:33,252 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 532 flow [2024-06-03 20:00:33,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-06-03 20:00:33,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-03 20:00:33,253 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 532 flow [2024-06-03 20:00:33,253 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) [2024-06-03 20:00:33,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:33,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 20:00:33,253 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)] === [2024-06-03 20:00:33,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1437185654, now seen corresponding path program 2 times [2024-06-03 20:00:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045774604] [2024-06-03 20:00:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:33,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045774604] [2024-06-03 20:00:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045774604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:33,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:33,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:33,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726629866] [2024-06-03 20:00:33,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:33,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:33,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:34,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:34,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 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) [2024-06-03 20:00:34,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:34,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:34,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:34,282 INFO L124 PetriNetUnfolderBase]: 233/420 cut-off events. [2024-06-03 20:00:34,283 INFO L125 PetriNetUnfolderBase]: For 5490/5490 co-relation queries the response was YES. [2024-06-03 20:00:34,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 420 events. 233/420 cut-off events. For 5490/5490 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1558 event pairs, 47 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 2188. Up to 298 conditions per place. [2024-06-03 20:00:34,286 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 58 selfloop transitions, 29 changer transitions 0/89 dead transitions. [2024-06-03 20:00:34,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 876 flow [2024-06-03 20:00:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-03 20:00:34,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-03 20:00:34,287 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 532 flow. Second operand 8 states and 92 transitions. [2024-06-03 20:00:34,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 876 flow [2024-06-03 20:00:34,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 822 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:34,293 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 605 flow [2024-06-03 20:00:34,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-06-03 20:00:34,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-03 20:00:34,293 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 605 flow [2024-06-03 20:00:34,293 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) [2024-06-03 20:00:34,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:34,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:34,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 20:00:34,294 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)] === [2024-06-03 20:00:34,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979405, now seen corresponding path program 1 times [2024-06-03 20:00:34,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:34,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399370912] [2024-06-03 20:00:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:34,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:35,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399370912] [2024-06-03 20:00:35,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399370912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:35,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:35,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869071403] [2024-06-03 20:00:35,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:35,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:35,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:35,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:35,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:35,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:35,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 605 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) [2024-06-03 20:00:35,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:35,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:35,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:35,323 INFO L124 PetriNetUnfolderBase]: 236/425 cut-off events. [2024-06-03 20:00:35,323 INFO L125 PetriNetUnfolderBase]: For 6025/6025 co-relation queries the response was YES. [2024-06-03 20:00:35,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 425 events. 236/425 cut-off events. For 6025/6025 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1568 event pairs, 47 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 2274. Up to 391 conditions per place. [2024-06-03 20:00:35,326 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-03 20:00:35,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 823 flow [2024-06-03 20:00:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 20:00:35,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-03 20:00:35,327 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 605 flow. Second operand 8 states and 82 transitions. [2024-06-03 20:00:35,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 823 flow [2024-06-03 20:00:35,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 790 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:35,334 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 625 flow [2024-06-03 20:00:35,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=625, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-06-03 20:00:35,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-03 20:00:35,335 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 625 flow [2024-06-03 20:00:35,335 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) [2024-06-03 20:00:35,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:35,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:35,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 20:00:35,336 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)] === [2024-06-03 20:00:35,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979188, now seen corresponding path program 3 times [2024-06-03 20:00:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146151641] [2024-06-03 20:00:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:35,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:36,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:36,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146151641] [2024-06-03 20:00:36,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146151641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:36,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:36,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:36,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018650916] [2024-06-03 20:00:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:36,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:36,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:36,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:36,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 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) [2024-06-03 20:00:36,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:36,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:36,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:36,344 INFO L124 PetriNetUnfolderBase]: 232/419 cut-off events. [2024-06-03 20:00:36,344 INFO L125 PetriNetUnfolderBase]: For 6213/6213 co-relation queries the response was YES. [2024-06-03 20:00:36,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 419 events. 232/419 cut-off events. For 6213/6213 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1540 event pairs, 46 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 2271. Up to 382 conditions per place. [2024-06-03 20:00:36,347 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 72 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-03 20:00:36,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 833 flow [2024-06-03 20:00:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-03 20:00:36,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-03 20:00:36,348 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 625 flow. Second operand 8 states and 83 transitions. [2024-06-03 20:00:36,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 833 flow [2024-06-03 20:00:36,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 784 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:36,355 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 609 flow [2024-06-03 20:00:36,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-03 20:00:36,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-03 20:00:36,356 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 609 flow [2024-06-03 20:00:36,356 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) [2024-06-03 20:00:36,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:36,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:36,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 20:00:36,356 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)] === [2024-06-03 20:00:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526634, now seen corresponding path program 4 times [2024-06-03 20:00:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:36,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861407014] [2024-06-03 20:00:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:36,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:37,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:37,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861407014] [2024-06-03 20:00:37,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861407014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:37,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:37,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:37,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184127358] [2024-06-03 20:00:37,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:37,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:37,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:37,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:37,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:37,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:37,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 609 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) [2024-06-03 20:00:37,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:37,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:37,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:37,247 INFO L124 PetriNetUnfolderBase]: 248/446 cut-off events. [2024-06-03 20:00:37,248 INFO L125 PetriNetUnfolderBase]: For 7374/7380 co-relation queries the response was YES. [2024-06-03 20:00:37,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 446 events. 248/446 cut-off events. For 7374/7380 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1664 event pairs, 52 based on Foata normal form. 6/449 useless extension candidates. Maximal degree in co-relation 2450. Up to 378 conditions per place. [2024-06-03 20:00:37,251 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-06-03 20:00:37,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 913 flow [2024-06-03 20:00:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-03 20:00:37,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-03 20:00:37,252 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 609 flow. Second operand 8 states and 86 transitions. [2024-06-03 20:00:37,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 913 flow [2024-06-03 20:00:37,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 880 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:37,260 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 681 flow [2024-06-03 20:00:37,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-06-03 20:00:37,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-03 20:00:37,261 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 681 flow [2024-06-03 20:00:37,261 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) [2024-06-03 20:00:37,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:37,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:37,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 20:00:37,262 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)] === [2024-06-03 20:00:37,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526417, now seen corresponding path program 2 times [2024-06-03 20:00:37,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019062257] [2024-06-03 20:00:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:37,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019062257] [2024-06-03 20:00:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019062257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:37,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:37,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183866939] [2024-06-03 20:00:37,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:37,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:37,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:37,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:37,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 681 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) [2024-06-03 20:00:37,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:37,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:37,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:38,167 INFO L124 PetriNetUnfolderBase]: 264/472 cut-off events. [2024-06-03 20:00:38,168 INFO L125 PetriNetUnfolderBase]: For 8742/8748 co-relation queries the response was YES. [2024-06-03 20:00:38,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 472 events. 264/472 cut-off events. For 8742/8748 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1792 event pairs, 51 based on Foata normal form. 6/475 useless extension candidates. Maximal degree in co-relation 2703. Up to 388 conditions per place. [2024-06-03 20:00:38,171 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 27 changer transitions 0/100 dead transitions. [2024-06-03 20:00:38,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 1063 flow [2024-06-03 20:00:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 20:00:38,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-03 20:00:38,173 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 681 flow. Second operand 8 states and 89 transitions. [2024-06-03 20:00:38,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 1063 flow [2024-06-03 20:00:38,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 1022 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:38,182 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 757 flow [2024-06-03 20:00:38,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=757, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-03 20:00:38,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-03 20:00:38,183 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 757 flow [2024-06-03 20:00:38,183 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) [2024-06-03 20:00:38,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:38,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:38,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 20:00:38,184 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)] === [2024-06-03 20:00:38,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1230259507, now seen corresponding path program 3 times [2024-06-03 20:00:38,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:38,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520947222] [2024-06-03 20:00:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:38,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:38,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520947222] [2024-06-03 20:00:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520947222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:38,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:38,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678794154] [2024-06-03 20:00:38,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:38,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:39,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:39,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 757 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) [2024-06-03 20:00:39,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:39,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:39,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:39,241 INFO L124 PetriNetUnfolderBase]: 262/468 cut-off events. [2024-06-03 20:00:39,242 INFO L125 PetriNetUnfolderBase]: For 8951/8951 co-relation queries the response was YES. [2024-06-03 20:00:39,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 468 events. 262/468 cut-off events. For 8951/8951 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1768 event pairs, 53 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 2749. Up to 444 conditions per place. [2024-06-03 20:00:39,245 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-06-03 20:00:39,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 987 flow [2024-06-03 20:00:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-03 20:00:39,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-03 20:00:39,246 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 757 flow. Second operand 8 states and 79 transitions. [2024-06-03 20:00:39,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 987 flow [2024-06-03 20:00:39,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 959 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:39,257 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 784 flow [2024-06-03 20:00:39,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-06-03 20:00:39,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-03 20:00:39,258 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 784 flow [2024-06-03 20:00:39,258 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) [2024-06-03 20:00:39,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:39,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:39,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 20:00:39,259 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)] === [2024-06-03 20:00:39,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:39,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878284, now seen corresponding path program 5 times [2024-06-03 20:00:39,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:39,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219041340] [2024-06-03 20:00:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:39,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:39,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:39,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219041340] [2024-06-03 20:00:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219041340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:39,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:39,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:39,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241336062] [2024-06-03 20:00:39,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:40,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:40,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 784 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) [2024-06-03 20:00:40,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:40,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:40,203 INFO L124 PetriNetUnfolderBase]: 258/463 cut-off events. [2024-06-03 20:00:40,203 INFO L125 PetriNetUnfolderBase]: For 9297/9303 co-relation queries the response was YES. [2024-06-03 20:00:40,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 463 events. 258/463 cut-off events. For 9297/9303 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1744 event pairs, 51 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 2726. Up to 419 conditions per place. [2024-06-03 20:00:40,207 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-03 20:00:40,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 1006 flow [2024-06-03 20:00:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 20:00:40,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-03 20:00:40,208 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 784 flow. Second operand 8 states and 82 transitions. [2024-06-03 20:00:40,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 1006 flow [2024-06-03 20:00:40,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 959 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:40,218 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 776 flow [2024-06-03 20:00:40,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-06-03 20:00:40,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-03 20:00:40,218 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 776 flow [2024-06-03 20:00:40,218 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) [2024-06-03 20:00:40,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:40,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:40,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 20:00:40,219 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)] === [2024-06-03 20:00:40,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:40,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878067, now seen corresponding path program 4 times [2024-06-03 20:00:40,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:40,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953903371] [2024-06-03 20:00:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:40,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953903371] [2024-06-03 20:00:41,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953903371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:41,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:41,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:41,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342333802] [2024-06-03 20:00:41,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:41,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:41,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:41,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:41,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:41,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 776 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) [2024-06-03 20:00:41,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:41,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:41,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:41,249 INFO L124 PetriNetUnfolderBase]: 256/460 cut-off events. [2024-06-03 20:00:41,249 INFO L125 PetriNetUnfolderBase]: For 9424/9430 co-relation queries the response was YES. [2024-06-03 20:00:41,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 460 events. 256/460 cut-off events. For 9424/9430 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1745 event pairs, 51 based on Foata normal form. 5/462 useless extension candidates. Maximal degree in co-relation 2709. Up to 419 conditions per place. [2024-06-03 20:00:41,252 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-06-03 20:00:41,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 1020 flow [2024-06-03 20:00:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 20:00:41,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-03 20:00:41,253 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 776 flow. Second operand 8 states and 81 transitions. [2024-06-03 20:00:41,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 1020 flow [2024-06-03 20:00:41,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 970 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:41,263 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 793 flow [2024-06-03 20:00:41,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2024-06-03 20:00:41,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-03 20:00:41,263 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 793 flow [2024-06-03 20:00:41,264 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) [2024-06-03 20:00:41,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:41,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:41,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 20:00:41,264 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)] === [2024-06-03 20:00:41,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1237883864, now seen corresponding path program 6 times [2024-06-03 20:00:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:41,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185540591] [2024-06-03 20:00:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185540591] [2024-06-03 20:00:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185540591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444044828] [2024-06-03 20:00:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:41,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:41,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 793 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) [2024-06-03 20:00:41,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:41,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:41,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:42,184 INFO L124 PetriNetUnfolderBase]: 252/454 cut-off events. [2024-06-03 20:00:42,184 INFO L125 PetriNetUnfolderBase]: For 9744/9750 co-relation queries the response was YES. [2024-06-03 20:00:42,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 454 events. 252/454 cut-off events. For 9744/9750 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1703 event pairs, 55 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 2659. Up to 293 conditions per place. [2024-06-03 20:00:42,188 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 41 changer transitions 0/104 dead transitions. [2024-06-03 20:00:42,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1109 flow [2024-06-03 20:00:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-03 20:00:42,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-03 20:00:42,190 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 793 flow. Second operand 8 states and 91 transitions. [2024-06-03 20:00:42,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1109 flow [2024-06-03 20:00:42,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 104 transitions, 1060 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:42,201 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 863 flow [2024-06-03 20:00:42,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-03 20:00:42,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-03 20:00:42,202 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 863 flow [2024-06-03 20:00:42,202 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) [2024-06-03 20:00:42,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:42,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:42,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 20:00:42,202 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)] === [2024-06-03 20:00:42,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1230249587, now seen corresponding path program 1 times [2024-06-03 20:00:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:42,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645052722] [2024-06-03 20:00:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:43,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645052722] [2024-06-03 20:00:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645052722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:43,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:43,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297127645] [2024-06-03 20:00:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:43,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:43,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:43,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 863 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) [2024-06-03 20:00:43,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:43,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:43,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:43,475 INFO L124 PetriNetUnfolderBase]: 249/448 cut-off events. [2024-06-03 20:00:43,475 INFO L125 PetriNetUnfolderBase]: For 9892/9892 co-relation queries the response was YES. [2024-06-03 20:00:43,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 448 events. 249/448 cut-off events. For 9892/9892 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1666 event pairs, 50 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 2687. Up to 418 conditions per place. [2024-06-03 20:00:43,478 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-03 20:00:43,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 1087 flow [2024-06-03 20:00:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-03 20:00:43,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30824372759856633 [2024-06-03 20:00:43,479 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 863 flow. Second operand 9 states and 86 transitions. [2024-06-03 20:00:43,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 1087 flow [2024-06-03 20:00:43,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 102 transitions, 984 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:43,490 INFO L231 Difference]: Finished difference. Result has 108 places, 92 transitions, 790 flow [2024-06-03 20:00:43,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=108, PETRI_TRANSITIONS=92} [2024-06-03 20:00:43,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-03 20:00:43,491 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 790 flow [2024-06-03 20:00:43,491 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) [2024-06-03 20:00:43,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:43,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 20:00:43,491 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)] === [2024-06-03 20:00:43,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1737454873, now seen corresponding path program 1 times [2024-06-03 20:00:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631767754] [2024-06-03 20:00:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:44,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:44,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631767754] [2024-06-03 20:00:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631767754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64628723] [2024-06-03 20:00:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:44,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:44,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 790 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) [2024-06-03 20:00:44,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:44,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:44,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:44,444 INFO L124 PetriNetUnfolderBase]: 253/456 cut-off events. [2024-06-03 20:00:44,444 INFO L125 PetriNetUnfolderBase]: For 10327/10327 co-relation queries the response was YES. [2024-06-03 20:00:44,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 456 events. 253/456 cut-off events. For 10327/10327 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1728 event pairs, 27 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2655. Up to 371 conditions per place. [2024-06-03 20:00:44,446 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 89 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-03 20:00:44,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 1058 flow [2024-06-03 20:00:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-03 20:00:44,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-03 20:00:44,448 INFO L175 Difference]: Start difference. First operand has 108 places, 92 transitions, 790 flow. Second operand 8 states and 85 transitions. [2024-06-03 20:00:44,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 1058 flow [2024-06-03 20:00:44,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 1026 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:44,459 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 812 flow [2024-06-03 20:00:44,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-03 20:00:44,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-03 20:00:44,460 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 812 flow [2024-06-03 20:00:44,460 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) [2024-06-03 20:00:44,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:44,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:44,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 20:00:44,461 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)] === [2024-06-03 20:00:44,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1737515323, now seen corresponding path program 2 times [2024-06-03 20:00:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374410989] [2024-06-03 20:00:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:44,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:45,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:45,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374410989] [2024-06-03 20:00:45,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374410989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:45,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:45,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905452184] [2024-06-03 20:00:45,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:45,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:45,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:45,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:45,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 812 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) [2024-06-03 20:00:45,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:45,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:45,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:45,454 INFO L124 PetriNetUnfolderBase]: 257/464 cut-off events. [2024-06-03 20:00:45,455 INFO L125 PetriNetUnfolderBase]: For 11196/11196 co-relation queries the response was YES. [2024-06-03 20:00:45,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 464 events. 257/464 cut-off events. For 11196/11196 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1788 event pairs, 42 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2738. Up to 379 conditions per place. [2024-06-03 20:00:45,458 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 85 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-03 20:00:45,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 1086 flow [2024-06-03 20:00:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 20:00:45,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-03 20:00:45,459 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 812 flow. Second operand 8 states and 87 transitions. [2024-06-03 20:00:45,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 1086 flow [2024-06-03 20:00:45,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 1042 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:45,472 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 836 flow [2024-06-03 20:00:45,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=836, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-03 20:00:45,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-03 20:00:45,472 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 836 flow [2024-06-03 20:00:45,472 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) [2024-06-03 20:00:45,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:45,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:45,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 20:00:45,473 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)] === [2024-06-03 20:00:45,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:45,473 INFO L85 PathProgramCache]: Analyzing trace with hash 720964227, now seen corresponding path program 1 times [2024-06-03 20:00:45,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:45,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320096752] [2024-06-03 20:00:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:45,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320096752] [2024-06-03 20:00:46,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320096752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:46,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:46,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:46,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749147070] [2024-06-03 20:00:46,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:46,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:46,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:46,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 836 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) [2024-06-03 20:00:46,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:46,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:46,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:46,543 INFO L124 PetriNetUnfolderBase]: 255/461 cut-off events. [2024-06-03 20:00:46,543 INFO L125 PetriNetUnfolderBase]: For 11399/11399 co-relation queries the response was YES. [2024-06-03 20:00:46,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 461 events. 255/461 cut-off events. For 11399/11399 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1762 event pairs, 41 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 2720. Up to 371 conditions per place. [2024-06-03 20:00:46,546 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 25 changer transitions 0/109 dead transitions. [2024-06-03 20:00:46,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1096 flow [2024-06-03 20:00:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 20:00:46,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 20:00:46,551 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 836 flow. Second operand 8 states and 88 transitions. [2024-06-03 20:00:46,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1096 flow [2024-06-03 20:00:46,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 1038 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:46,563 INFO L231 Difference]: Finished difference. Result has 113 places, 94 transitions, 837 flow [2024-06-03 20:00:46,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=837, PETRI_PLACES=113, PETRI_TRANSITIONS=94} [2024-06-03 20:00:46,563 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-03 20:00:46,563 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 94 transitions, 837 flow [2024-06-03 20:00:46,564 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) [2024-06-03 20:00:46,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:46,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:46,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 20:00:46,564 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)] === [2024-06-03 20:00:46,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash 90525055, now seen corresponding path program 1 times [2024-06-03 20:00:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:46,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050435201] [2024-06-03 20:00:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:47,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050435201] [2024-06-03 20:00:47,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050435201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:47,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:47,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:47,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940732614] [2024-06-03 20:00:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:47,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:47,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:47,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:47,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 94 transitions, 837 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) [2024-06-03 20:00:47,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:47,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:47,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:47,579 INFO L124 PetriNetUnfolderBase]: 261/471 cut-off events. [2024-06-03 20:00:47,579 INFO L125 PetriNetUnfolderBase]: For 12416/12416 co-relation queries the response was YES. [2024-06-03 20:00:47,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 471 events. 261/471 cut-off events. For 12416/12416 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1817 event pairs, 37 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2788. Up to 381 conditions per place. [2024-06-03 20:00:47,582 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 25 changer transitions 0/113 dead transitions. [2024-06-03 20:00:47,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 1139 flow [2024-06-03 20:00:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 20:00:47,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 20:00:47,583 INFO L175 Difference]: Start difference. First operand has 113 places, 94 transitions, 837 flow. Second operand 9 states and 97 transitions. [2024-06-03 20:00:47,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 1139 flow [2024-06-03 20:00:47,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 113 transitions, 1071 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:47,598 INFO L231 Difference]: Finished difference. Result has 115 places, 96 transitions, 856 flow [2024-06-03 20:00:47,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=856, PETRI_PLACES=115, PETRI_TRANSITIONS=96} [2024-06-03 20:00:47,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-03 20:00:47,598 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 96 transitions, 856 flow [2024-06-03 20:00:47,599 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) [2024-06-03 20:00:47,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:47,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:47,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 20:00:47,599 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)] === [2024-06-03 20:00:47,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:47,599 INFO L85 PathProgramCache]: Analyzing trace with hash 205816225, now seen corresponding path program 2 times [2024-06-03 20:00:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:47,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193907681] [2024-06-03 20:00:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:47,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:48,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193907681] [2024-06-03 20:00:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193907681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:48,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210155796] [2024-06-03 20:00:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:48,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:48,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 96 transitions, 856 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) [2024-06-03 20:00:48,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:48,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:48,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:48,665 INFO L124 PetriNetUnfolderBase]: 307/545 cut-off events. [2024-06-03 20:00:48,665 INFO L125 PetriNetUnfolderBase]: For 17314/17314 co-relation queries the response was YES. [2024-06-03 20:00:48,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 545 events. 307/545 cut-off events. For 17314/17314 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2178 event pairs, 50 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3493. Up to 353 conditions per place. [2024-06-03 20:00:48,667 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 36 changer transitions 0/123 dead transitions. [2024-06-03 20:00:48,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 123 transitions, 1402 flow [2024-06-03 20:00:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 20:00:48,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-03 20:00:48,669 INFO L175 Difference]: Start difference. First operand has 115 places, 96 transitions, 856 flow. Second operand 9 states and 105 transitions. [2024-06-03 20:00:48,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 123 transitions, 1402 flow [2024-06-03 20:00:48,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 1331 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:48,685 INFO L231 Difference]: Finished difference. Result has 119 places, 105 transitions, 1026 flow [2024-06-03 20:00:48,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1026, PETRI_PLACES=119, PETRI_TRANSITIONS=105} [2024-06-03 20:00:48,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-03 20:00:48,688 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 105 transitions, 1026 flow [2024-06-03 20:00:48,689 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) [2024-06-03 20:00:48,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:48,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 20:00:48,689 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)] === [2024-06-03 20:00:48,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash 205989205, now seen corresponding path program 3 times [2024-06-03 20:00:48,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:48,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581108971] [2024-06-03 20:00:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:48,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:49,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581108971] [2024-06-03 20:00:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581108971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:49,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292895174] [2024-06-03 20:00:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:49,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:49,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 1026 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) [2024-06-03 20:00:49,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:49,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:49,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:49,576 INFO L124 PetriNetUnfolderBase]: 323/571 cut-off events. [2024-06-03 20:00:49,577 INFO L125 PetriNetUnfolderBase]: For 19734/19734 co-relation queries the response was YES. [2024-06-03 20:00:49,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3948 conditions, 571 events. 323/571 cut-off events. For 19734/19734 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2303 event pairs, 55 based on Foata normal form. 2/572 useless extension candidates. Maximal degree in co-relation 3888. Up to 483 conditions per place. [2024-06-03 20:00:49,580 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-03 20:00:49,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 1523 flow [2024-06-03 20:00:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 20:00:49,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-03 20:00:49,583 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 1026 flow. Second operand 9 states and 100 transitions. [2024-06-03 20:00:49,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 1523 flow [2024-06-03 20:00:49,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1475 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:49,603 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 1113 flow [2024-06-03 20:00:49,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1113, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-06-03 20:00:49,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-03 20:00:49,603 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 1113 flow [2024-06-03 20:00:49,603 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) [2024-06-03 20:00:49,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:49,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 20:00:49,603 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)] === [2024-06-03 20:00:49,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1855603003, now seen corresponding path program 3 times [2024-06-03 20:00:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424039000] [2024-06-03 20:00:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:50,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:50,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424039000] [2024-06-03 20:00:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424039000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:50,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:50,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663743290] [2024-06-03 20:00:50,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:50,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:50,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:50,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:50,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:50,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:50,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 1113 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) [2024-06-03 20:00:50,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:50,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:50,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:50,562 INFO L124 PetriNetUnfolderBase]: 327/579 cut-off events. [2024-06-03 20:00:50,562 INFO L125 PetriNetUnfolderBase]: For 21029/21029 co-relation queries the response was YES. [2024-06-03 20:00:50,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 579 events. 327/579 cut-off events. For 21029/21029 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2346 event pairs, 56 based on Foata normal form. 2/580 useless extension candidates. Maximal degree in co-relation 4026. Up to 487 conditions per place. [2024-06-03 20:00:50,566 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 97 selfloop transitions, 24 changer transitions 0/123 dead transitions. [2024-06-03 20:00:50,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1409 flow [2024-06-03 20:00:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 20:00:50,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-03 20:00:50,567 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 1113 flow. Second operand 8 states and 87 transitions. [2024-06-03 20:00:50,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1409 flow [2024-06-03 20:00:50,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 1339 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:50,592 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 1115 flow [2024-06-03 20:00:50,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2024-06-03 20:00:50,592 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-03 20:00:50,592 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 1115 flow [2024-06-03 20:00:50,593 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) [2024-06-03 20:00:50,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:50,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:50,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 20:00:50,593 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)] === [2024-06-03 20:00:50,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2001108975, now seen corresponding path program 4 times [2024-06-03 20:00:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:50,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718222542] [2024-06-03 20:00:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:50,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718222542] [2024-06-03 20:00:51,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718222542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:51,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:51,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:51,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85371599] [2024-06-03 20:00:51,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:51,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:51,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:51,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:51,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:51,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 1115 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) [2024-06-03 20:00:51,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:51,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:51,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:51,550 INFO L124 PetriNetUnfolderBase]: 321/571 cut-off events. [2024-06-03 20:00:51,550 INFO L125 PetriNetUnfolderBase]: For 21229/21229 co-relation queries the response was YES. [2024-06-03 20:00:51,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 571 events. 321/571 cut-off events. For 21229/21229 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2344 event pairs, 52 based on Foata normal form. 4/574 useless extension candidates. Maximal degree in co-relation 3845. Up to 490 conditions per place. [2024-06-03 20:00:51,554 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2024-06-03 20:00:51,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 126 transitions, 1479 flow [2024-06-03 20:00:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 20:00:51,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 20:00:51,570 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 1115 flow. Second operand 9 states and 98 transitions. [2024-06-03 20:00:51,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 126 transitions, 1479 flow [2024-06-03 20:00:51,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 1393 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:51,595 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 1080 flow [2024-06-03 20:00:51,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1029, 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=9, PETRI_FLOW=1080, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-06-03 20:00:51,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-03 20:00:51,595 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 1080 flow [2024-06-03 20:00:51,596 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) [2024-06-03 20:00:51,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:51,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:51,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 20:00:51,596 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)] === [2024-06-03 20:00:51,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1602901613, now seen corresponding path program 1 times [2024-06-03 20:00:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:51,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146589604] [2024-06-03 20:00:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:52,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:52,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146589604] [2024-06-03 20:00:52,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146589604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:52,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:52,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976453245] [2024-06-03 20:00:52,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:52,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:52,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:52,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:52,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:52,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 1080 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) [2024-06-03 20:00:52,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:52,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:52,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:52,604 INFO L124 PetriNetUnfolderBase]: 317/564 cut-off events. [2024-06-03 20:00:52,604 INFO L125 PetriNetUnfolderBase]: For 19600/19600 co-relation queries the response was YES. [2024-06-03 20:00:52,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3793 conditions, 564 events. 317/564 cut-off events. For 19600/19600 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2293 event pairs, 58 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 3728. Up to 527 conditions per place. [2024-06-03 20:00:52,607 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2024-06-03 20:00:52,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 121 transitions, 1350 flow [2024-06-03 20:00:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-03 20:00:52,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-03 20:00:52,608 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 1080 flow. Second operand 8 states and 83 transitions. [2024-06-03 20:00:52,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 121 transitions, 1350 flow [2024-06-03 20:00:52,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1302 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:52,633 INFO L231 Difference]: Finished difference. Result has 131 places, 110 transitions, 1068 flow [2024-06-03 20:00:52,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=131, PETRI_TRANSITIONS=110} [2024-06-03 20:00:52,634 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-03 20:00:52,634 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 110 transitions, 1068 flow [2024-06-03 20:00:52,634 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) [2024-06-03 20:00:52,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:52,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 20:00:52,634 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)] === [2024-06-03 20:00:52,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 286742443, now seen corresponding path program 5 times [2024-06-03 20:00:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:52,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648292773] [2024-06-03 20:00:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:52,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:53,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648292773] [2024-06-03 20:00:53,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648292773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:53,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:53,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893921524] [2024-06-03 20:00:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:53,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:53,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:53,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:53,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:53,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 110 transitions, 1068 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) [2024-06-03 20:00:53,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:53,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:53,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:53,606 INFO L124 PetriNetUnfolderBase]: 389/681 cut-off events. [2024-06-03 20:00:53,607 INFO L125 PetriNetUnfolderBase]: For 30547/30553 co-relation queries the response was YES. [2024-06-03 20:00:53,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4921 conditions, 681 events. 389/681 cut-off events. For 30547/30553 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2874 event pairs, 72 based on Foata normal form. 8/686 useless extension candidates. Maximal degree in co-relation 4855. Up to 453 conditions per place. [2024-06-03 20:00:53,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 40 changer transitions 0/139 dead transitions. [2024-06-03 20:00:53,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 139 transitions, 1792 flow [2024-06-03 20:00:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 20:00:53,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-03 20:00:53,612 INFO L175 Difference]: Start difference. First operand has 131 places, 110 transitions, 1068 flow. Second operand 9 states and 106 transitions. [2024-06-03 20:00:53,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 139 transitions, 1792 flow [2024-06-03 20:00:53,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 139 transitions, 1754 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 20:00:53,650 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 1258 flow [2024-06-03 20:00:53,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1258, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-06-03 20:00:53,650 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-03 20:00:53,650 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 1258 flow [2024-06-03 20:00:53,651 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) [2024-06-03 20:00:53,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:53,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:53,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 20:00:53,651 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)] === [2024-06-03 20:00:53,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash 508380973, now seen corresponding path program 6 times [2024-06-03 20:00:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116530241] [2024-06-03 20:00:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:53,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:54,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:54,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116530241] [2024-06-03 20:00:54,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116530241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:54,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:54,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:54,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822182870] [2024-06-03 20:00:54,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:54,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:54,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:54,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:54,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 1258 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) [2024-06-03 20:00:54,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:54,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:54,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:54,615 INFO L124 PetriNetUnfolderBase]: 395/691 cut-off events. [2024-06-03 20:00:54,615 INFO L125 PetriNetUnfolderBase]: For 30845/30851 co-relation queries the response was YES. [2024-06-03 20:00:54,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5168 conditions, 691 events. 395/691 cut-off events. For 30845/30851 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2940 event pairs, 70 based on Foata normal form. 6/694 useless extension candidates. Maximal degree in co-relation 5101. Up to 461 conditions per place. [2024-06-03 20:00:54,620 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 47 changer transitions 0/143 dead transitions. [2024-06-03 20:00:54,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 143 transitions, 1942 flow [2024-06-03 20:00:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 20:00:54,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-03 20:00:54,629 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 1258 flow. Second operand 9 states and 105 transitions. [2024-06-03 20:00:54,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 143 transitions, 1942 flow [2024-06-03 20:00:54,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 143 transitions, 1850 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:54,663 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 1375 flow [2024-06-03 20:00:54,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2024-06-03 20:00:54,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-03 20:00:54,663 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1375 flow [2024-06-03 20:00:54,664 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) [2024-06-03 20:00:54,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:54,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:54,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 20:00:54,664 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)] === [2024-06-03 20:00:54,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:54,664 INFO L85 PathProgramCache]: Analyzing trace with hash 286981701, now seen corresponding path program 2 times [2024-06-03 20:00:54,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:54,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428927493] [2024-06-03 20:00:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:54,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:55,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428927493] [2024-06-03 20:00:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428927493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:55,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:55,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55766112] [2024-06-03 20:00:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:55,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:55,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:55,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:55,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1375 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) [2024-06-03 20:00:55,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:55,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:55,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:56,084 INFO L124 PetriNetUnfolderBase]: 398/695 cut-off events. [2024-06-03 20:00:56,084 INFO L125 PetriNetUnfolderBase]: For 31260/31260 co-relation queries the response was YES. [2024-06-03 20:00:56,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 695 events. 398/695 cut-off events. For 31260/31260 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2942 event pairs, 82 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 5256. Up to 661 conditions per place. [2024-06-03 20:00:56,089 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-06-03 20:00:56,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1778 flow [2024-06-03 20:00:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:00:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:00:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-03 20:00:56,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-03 20:00:56,090 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 1375 flow. Second operand 10 states and 97 transitions. [2024-06-03 20:00:56,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1778 flow [2024-06-03 20:00:56,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 137 transitions, 1682 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 20:00:56,132 INFO L231 Difference]: Finished difference. Result has 146 places, 126 transitions, 1351 flow [2024-06-03 20:00:56,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1351, PETRI_PLACES=146, PETRI_TRANSITIONS=126} [2024-06-03 20:00:56,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-03 20:00:56,133 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 126 transitions, 1351 flow [2024-06-03 20:00:56,133 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) [2024-06-03 20:00:56,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:56,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:56,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 20:00:56,134 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)] === [2024-06-03 20:00:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash 516661941, now seen corresponding path program 3 times [2024-06-03 20:00:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829953045] [2024-06-03 20:00:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:56,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:56,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829953045] [2024-06-03 20:00:56,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829953045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:56,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:56,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:00:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144329376] [2024-06-03 20:00:56,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:56,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:00:56,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:00:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:00:57,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:57,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 126 transitions, 1351 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) [2024-06-03 20:00:57,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:57,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:57,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:57,236 INFO L124 PetriNetUnfolderBase]: 396/692 cut-off events. [2024-06-03 20:00:57,236 INFO L125 PetriNetUnfolderBase]: For 32095/32095 co-relation queries the response was YES. [2024-06-03 20:00:57,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 692 events. 396/692 cut-off events. For 32095/32095 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2939 event pairs, 82 based on Foata normal form. 1/692 useless extension candidates. Maximal degree in co-relation 5108. Up to 659 conditions per place. [2024-06-03 20:00:57,240 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 116 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2024-06-03 20:00:57,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 134 transitions, 1635 flow [2024-06-03 20:00:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 20:00:57,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-03 20:00:57,241 INFO L175 Difference]: Start difference. First operand has 146 places, 126 transitions, 1351 flow. Second operand 8 states and 81 transitions. [2024-06-03 20:00:57,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 134 transitions, 1635 flow [2024-06-03 20:00:57,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 1576 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 20:00:57,286 INFO L231 Difference]: Finished difference. Result has 147 places, 126 transitions, 1333 flow [2024-06-03 20:00:57,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1333, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2024-06-03 20:00:57,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-03 20:00:57,287 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 1333 flow [2024-06-03 20:00:57,287 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) [2024-06-03 20:00:57,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:57,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:57,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 20:00:57,287 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)] === [2024-06-03 20:00:57,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash 516661693, now seen corresponding path program 7 times [2024-06-03 20:00:57,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:57,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738872121] [2024-06-03 20:00:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:57,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:57,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738872121] [2024-06-03 20:00:57,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738872121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:57,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:57,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:57,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643141021] [2024-06-03 20:00:57,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:57,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:57,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:58,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:58,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 126 transitions, 1333 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) [2024-06-03 20:00:58,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:58,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:58,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:58,312 INFO L124 PetriNetUnfolderBase]: 388/680 cut-off events. [2024-06-03 20:00:58,313 INFO L125 PetriNetUnfolderBase]: For 32842/32842 co-relation queries the response was YES. [2024-06-03 20:00:58,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 680 events. 388/680 cut-off events. For 32842/32842 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2886 event pairs, 75 based on Foata normal form. 4/683 useless extension candidates. Maximal degree in co-relation 4900. Up to 622 conditions per place. [2024-06-03 20:00:58,316 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 21 changer transitions 0/138 dead transitions. [2024-06-03 20:00:58,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 138 transitions, 1717 flow [2024-06-03 20:00:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:58,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-03 20:00:58,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-03 20:00:58,318 INFO L175 Difference]: Start difference. First operand has 147 places, 126 transitions, 1333 flow. Second operand 9 states and 94 transitions. [2024-06-03 20:00:58,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 138 transitions, 1717 flow [2024-06-03 20:00:58,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 138 transitions, 1649 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 20:00:58,363 INFO L231 Difference]: Finished difference. Result has 148 places, 126 transitions, 1317 flow [2024-06-03 20:00:58,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1317, PETRI_PLACES=148, PETRI_TRANSITIONS=126} [2024-06-03 20:00:58,363 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-03 20:00:58,363 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 126 transitions, 1317 flow [2024-06-03 20:00:58,364 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) [2024-06-03 20:00:58,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:58,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 20:00:58,364 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)] === [2024-06-03 20:00:58,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash 280479823, now seen corresponding path program 8 times [2024-06-03 20:00:58,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855635451] [2024-06-03 20:00:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:59,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855635451] [2024-06-03 20:00:59,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855635451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:59,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:59,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:00:59,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980464046] [2024-06-03 20:00:59,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:00:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:00:59,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:00:59,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:00:59,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 126 transitions, 1317 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) [2024-06-03 20:00:59,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:59,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:00:59,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:59,365 INFO L124 PetriNetUnfolderBase]: 404/707 cut-off events. [2024-06-03 20:00:59,365 INFO L125 PetriNetUnfolderBase]: For 33390/33396 co-relation queries the response was YES. [2024-06-03 20:00:59,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 707 events. 404/707 cut-off events. For 33390/33396 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3025 event pairs, 71 based on Foata normal form. 6/710 useless extension candidates. Maximal degree in co-relation 5127. Up to 612 conditions per place. [2024-06-03 20:00:59,370 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-06-03 20:00:59,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 146 transitions, 1907 flow [2024-06-03 20:00:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:00:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:00:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 20:00:59,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 20:00:59,371 INFO L175 Difference]: Start difference. First operand has 148 places, 126 transitions, 1317 flow. Second operand 9 states and 99 transitions. [2024-06-03 20:00:59,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 146 transitions, 1907 flow [2024-06-03 20:00:59,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 1850 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 20:00:59,441 INFO L231 Difference]: Finished difference. Result has 149 places, 131 transitions, 1417 flow [2024-06-03 20:00:59,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1417, PETRI_PLACES=149, PETRI_TRANSITIONS=131} [2024-06-03 20:00:59,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-03 20:00:59,441 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 131 transitions, 1417 flow [2024-06-03 20:00:59,441 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) [2024-06-03 20:00:59,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:59,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 20:00:59,442 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)] === [2024-06-03 20:00:59,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash 280486333, now seen corresponding path program 9 times [2024-06-03 20:00:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:59,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063996643] [2024-06-03 20:00:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:00,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:00,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063996643] [2024-06-03 20:01:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063996643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:00,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:00,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:00,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133288850] [2024-06-03 20:01:00,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:00,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:00,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:00,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:00,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 131 transitions, 1417 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) [2024-06-03 20:01:00,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:00,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:00,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:00,444 INFO L124 PetriNetUnfolderBase]: 398/699 cut-off events. [2024-06-03 20:01:00,444 INFO L125 PetriNetUnfolderBase]: For 33579/33585 co-relation queries the response was YES. [2024-06-03 20:01:00,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5055 conditions, 699 events. 398/699 cut-off events. For 33579/33585 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3007 event pairs, 69 based on Foata normal form. 8/704 useless extension candidates. Maximal degree in co-relation 4982. Up to 611 conditions per place. [2024-06-03 20:01:00,448 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2024-06-03 20:01:00,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 1827 flow [2024-06-03 20:01:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 20:01:00,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 20:01:00,449 INFO L175 Difference]: Start difference. First operand has 149 places, 131 transitions, 1417 flow. Second operand 9 states and 97 transitions. [2024-06-03 20:01:00,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 1827 flow [2024-06-03 20:01:00,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 1673 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:00,498 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 1320 flow [2024-06-03 20:01:00,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2024-06-03 20:01:00,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-03 20:01:00,498 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 1320 flow [2024-06-03 20:01:00,498 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) [2024-06-03 20:01:00,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:00,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:00,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 20:01:00,499 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)] === [2024-06-03 20:01:00,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash 280301883, now seen corresponding path program 4 times [2024-06-03 20:01:00,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:00,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239760350] [2024-06-03 20:01:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:00,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:01,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239760350] [2024-06-03 20:01:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239760350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:01,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:01,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330293334] [2024-06-03 20:01:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:01,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:01,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 1320 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) [2024-06-03 20:01:01,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:01,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:01,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:01,520 INFO L124 PetriNetUnfolderBase]: 395/694 cut-off events. [2024-06-03 20:01:01,520 INFO L125 PetriNetUnfolderBase]: For 31282/31288 co-relation queries the response was YES. [2024-06-03 20:01:01,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4830 conditions, 694 events. 395/694 cut-off events. For 31282/31288 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2989 event pairs, 65 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 4756. Up to 589 conditions per place. [2024-06-03 20:01:01,524 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 112 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-06-03 20:01:01,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 142 transitions, 1630 flow [2024-06-03 20:01:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-03 20:01:01,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-03 20:01:01,526 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 1320 flow. Second operand 8 states and 86 transitions. [2024-06-03 20:01:01,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 142 transitions, 1630 flow [2024-06-03 20:01:01,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 142 transitions, 1580 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:01,578 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 1330 flow [2024-06-03 20:01:01,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1330, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2024-06-03 20:01:01,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-03 20:01:01,579 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 1330 flow [2024-06-03 20:01:01,579 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) [2024-06-03 20:01:01,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:01,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:01,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 20:01:01,580 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)] === [2024-06-03 20:01:01,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash 280486581, now seen corresponding path program 4 times [2024-06-03 20:01:01,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:01,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741842363] [2024-06-03 20:01:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:02,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:02,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741842363] [2024-06-03 20:01:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741842363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:02,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82765000] [2024-06-03 20:01:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:02,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:02,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:02,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:02,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 1330 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) [2024-06-03 20:01:02,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:02,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:02,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:02,633 INFO L124 PetriNetUnfolderBase]: 391/687 cut-off events. [2024-06-03 20:01:02,633 INFO L125 PetriNetUnfolderBase]: For 30827/30833 co-relation queries the response was YES. [2024-06-03 20:01:02,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 687 events. 391/687 cut-off events. For 30827/30833 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2941 event pairs, 73 based on Foata normal form. 5/689 useless extension candidates. Maximal degree in co-relation 4708. Up to 643 conditions per place. [2024-06-03 20:01:02,638 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 120 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2024-06-03 20:01:02,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1632 flow [2024-06-03 20:01:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 20:01:02,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-03 20:01:02,639 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 1330 flow. Second operand 8 states and 82 transitions. [2024-06-03 20:01:02,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1632 flow [2024-06-03 20:01:02,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 1533 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:02,691 INFO L231 Difference]: Finished difference. Result has 154 places, 131 transitions, 1273 flow [2024-06-03 20:01:02,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1273, PETRI_PLACES=154, PETRI_TRANSITIONS=131} [2024-06-03 20:01:02,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-03 20:01:02,692 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 131 transitions, 1273 flow [2024-06-03 20:01:02,692 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) [2024-06-03 20:01:02,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:02,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 20:01:02,693 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)] === [2024-06-03 20:01:02,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash 280306843, now seen corresponding path program 10 times [2024-06-03 20:01:02,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:02,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305405248] [2024-06-03 20:01:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:03,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305405248] [2024-06-03 20:01:03,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305405248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:03,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:03,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001268073] [2024-06-03 20:01:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:03,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:03,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 131 transitions, 1273 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) [2024-06-03 20:01:03,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:03,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:03,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:03,769 INFO L124 PetriNetUnfolderBase]: 387/681 cut-off events. [2024-06-03 20:01:03,769 INFO L125 PetriNetUnfolderBase]: For 30885/30891 co-relation queries the response was YES. [2024-06-03 20:01:03,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4597 conditions, 681 events. 387/681 cut-off events. For 30885/30891 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2913 event pairs, 60 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 4521. Up to 301 conditions per place. [2024-06-03 20:01:03,773 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 77 changer transitions 0/153 dead transitions. [2024-06-03 20:01:03,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 153 transitions, 1927 flow [2024-06-03 20:01:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 20:01:03,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-03 20:01:03,774 INFO L175 Difference]: Start difference. First operand has 154 places, 131 transitions, 1273 flow. Second operand 9 states and 109 transitions. [2024-06-03 20:01:03,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 153 transitions, 1927 flow [2024-06-03 20:01:03,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 153 transitions, 1853 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:03,829 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1477 flow [2024-06-03 20:01:03,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1477, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-03 20:01:03,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-03 20:01:03,830 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1477 flow [2024-06-03 20:01:03,830 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) [2024-06-03 20:01:03,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:03,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:03,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 20:01:03,830 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)] === [2024-06-03 20:01:03,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1244811915, now seen corresponding path program 1 times [2024-06-03 20:01:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:03,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498292443] [2024-06-03 20:01:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:04,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:04,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498292443] [2024-06-03 20:01:04,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498292443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:04,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585988985] [2024-06-03 20:01:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:04,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:04,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:04,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:04,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:04,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1477 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) [2024-06-03 20:01:04,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:04,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:04,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:04,996 INFO L124 PetriNetUnfolderBase]: 391/688 cut-off events. [2024-06-03 20:01:04,996 INFO L125 PetriNetUnfolderBase]: For 32435/32435 co-relation queries the response was YES. [2024-06-03 20:01:04,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4883 conditions, 688 events. 391/688 cut-off events. For 32435/32435 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2956 event pairs, 51 based on Foata normal form. 2/689 useless extension candidates. Maximal degree in co-relation 4806. Up to 595 conditions per place. [2024-06-03 20:01:05,001 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 133 selfloop transitions, 18 changer transitions 0/153 dead transitions. [2024-06-03 20:01:05,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 153 transitions, 1839 flow [2024-06-03 20:01:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-03 20:01:05,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 20:01:05,003 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1477 flow. Second operand 9 states and 93 transitions. [2024-06-03 20:01:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 153 transitions, 1839 flow [2024-06-03 20:01:05,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 153 transitions, 1718 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:05,059 INFO L231 Difference]: Finished difference. Result has 160 places, 136 transitions, 1412 flow [2024-06-03 20:01:05,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1412, PETRI_PLACES=160, PETRI_TRANSITIONS=136} [2024-06-03 20:01:05,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-03 20:01:05,059 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 136 transitions, 1412 flow [2024-06-03 20:01:05,059 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) [2024-06-03 20:01:05,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:05,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:05,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 20:01:05,060 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)] === [2024-06-03 20:01:05,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1971598903, now seen corresponding path program 2 times [2024-06-03 20:01:05,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:05,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821674180] [2024-06-03 20:01:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:05,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:05,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821674180] [2024-06-03 20:01:05,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821674180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:05,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:05,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142107397] [2024-06-03 20:01:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:05,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:05,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:05,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:05,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 136 transitions, 1412 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) [2024-06-03 20:01:05,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:05,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:05,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:06,153 INFO L124 PetriNetUnfolderBase]: 395/696 cut-off events. [2024-06-03 20:01:06,153 INFO L125 PetriNetUnfolderBase]: For 33774/33774 co-relation queries the response was YES. [2024-06-03 20:01:06,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 696 events. 395/696 cut-off events. For 33774/33774 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3017 event pairs, 61 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 4822. Up to 603 conditions per place. [2024-06-03 20:01:06,158 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 129 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-06-03 20:01:06,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1780 flow [2024-06-03 20:01:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 20:01:06,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-03 20:01:06,159 INFO L175 Difference]: Start difference. First operand has 160 places, 136 transitions, 1412 flow. Second operand 9 states and 95 transitions. [2024-06-03 20:01:06,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1780 flow [2024-06-03 20:01:06,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1734 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:06,224 INFO L231 Difference]: Finished difference. Result has 162 places, 137 transitions, 1434 flow [2024-06-03 20:01:06,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1434, PETRI_PLACES=162, PETRI_TRANSITIONS=137} [2024-06-03 20:01:06,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-03 20:01:06,225 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 137 transitions, 1434 flow [2024-06-03 20:01:06,225 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) [2024-06-03 20:01:06,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:06,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:06,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 20:01:06,225 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)] === [2024-06-03 20:01:06,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:06,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595028, now seen corresponding path program 1 times [2024-06-03 20:01:06,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:06,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316924830] [2024-06-03 20:01:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:06,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:07,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:07,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316924830] [2024-06-03 20:01:07,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316924830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:07,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:07,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:07,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547177475] [2024-06-03 20:01:07,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:07,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:07,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:07,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:07,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 137 transitions, 1434 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) [2024-06-03 20:01:07,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:07,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:07,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:07,388 INFO L124 PetriNetUnfolderBase]: 393/693 cut-off events. [2024-06-03 20:01:07,388 INFO L125 PetriNetUnfolderBase]: For 33274/33274 co-relation queries the response was YES. [2024-06-03 20:01:07,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 693 events. 393/693 cut-off events. For 33274/33274 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2995 event pairs, 62 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 4777. Up to 592 conditions per place. [2024-06-03 20:01:07,393 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 125 selfloop transitions, 29 changer transitions 0/156 dead transitions. [2024-06-03 20:01:07,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 156 transitions, 1843 flow [2024-06-03 20:01:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 20:01:07,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 20:01:07,394 INFO L175 Difference]: Start difference. First operand has 162 places, 137 transitions, 1434 flow. Second operand 9 states and 97 transitions. [2024-06-03 20:01:07,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 156 transitions, 1843 flow [2024-06-03 20:01:07,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1785 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:07,465 INFO L231 Difference]: Finished difference. Result has 164 places, 139 transitions, 1495 flow [2024-06-03 20:01:07,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1495, PETRI_PLACES=164, PETRI_TRANSITIONS=139} [2024-06-03 20:01:07,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-03 20:01:07,466 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 139 transitions, 1495 flow [2024-06-03 20:01:07,466 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) [2024-06-03 20:01:07,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:07,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:07,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 20:01:07,466 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)] === [2024-06-03 20:01:07,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595183, now seen corresponding path program 3 times [2024-06-03 20:01:07,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:07,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145523777] [2024-06-03 20:01:07,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:07,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145523777] [2024-06-03 20:01:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145523777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:08,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:08,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:08,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058663046] [2024-06-03 20:01:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:08,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:08,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:08,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 139 transitions, 1495 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) [2024-06-03 20:01:08,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:08,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:08,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:08,694 INFO L124 PetriNetUnfolderBase]: 397/701 cut-off events. [2024-06-03 20:01:08,695 INFO L125 PetriNetUnfolderBase]: For 35794/35794 co-relation queries the response was YES. [2024-06-03 20:01:08,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 701 events. 397/701 cut-off events. For 35794/35794 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3054 event pairs, 62 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 4862. Up to 603 conditions per place. [2024-06-03 20:01:08,700 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 129 selfloop transitions, 26 changer transitions 0/157 dead transitions. [2024-06-03 20:01:08,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 157 transitions, 1873 flow [2024-06-03 20:01:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 20:01:08,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-03 20:01:08,701 INFO L175 Difference]: Start difference. First operand has 164 places, 139 transitions, 1495 flow. Second operand 9 states and 96 transitions. [2024-06-03 20:01:08,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 157 transitions, 1873 flow [2024-06-03 20:01:08,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1783 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:08,779 INFO L231 Difference]: Finished difference. Result has 166 places, 140 transitions, 1482 flow [2024-06-03 20:01:08,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1482, PETRI_PLACES=166, PETRI_TRANSITIONS=140} [2024-06-03 20:01:08,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-03 20:01:08,780 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 140 transitions, 1482 flow [2024-06-03 20:01:08,780 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) [2024-06-03 20:01:08,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:08,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:08,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 20:01:08,780 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)] === [2024-06-03 20:01:08,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1884753271, now seen corresponding path program 1 times [2024-06-03 20:01:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482330646] [2024-06-03 20:01:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482330646] [2024-06-03 20:01:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482330646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:09,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:09,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:09,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740264782] [2024-06-03 20:01:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:09,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:09,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:09,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:09,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:09,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 140 transitions, 1482 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) [2024-06-03 20:01:09,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:09,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:10,130 INFO L124 PetriNetUnfolderBase]: 403/711 cut-off events. [2024-06-03 20:01:10,130 INFO L125 PetriNetUnfolderBase]: For 37485/37485 co-relation queries the response was YES. [2024-06-03 20:01:10,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 711 events. 403/711 cut-off events. For 37485/37485 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3104 event pairs, 58 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 4928. Up to 613 conditions per place. [2024-06-03 20:01:10,135 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 27 changer transitions 0/161 dead transitions. [2024-06-03 20:01:10,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 161 transitions, 1894 flow [2024-06-03 20:01:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:10,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 20:01:10,136 INFO L175 Difference]: Start difference. First operand has 166 places, 140 transitions, 1482 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:10,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 161 transitions, 1894 flow [2024-06-03 20:01:10,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 161 transitions, 1829 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:10,209 INFO L231 Difference]: Finished difference. Result has 169 places, 142 transitions, 1516 flow [2024-06-03 20:01:10,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1516, PETRI_PLACES=169, PETRI_TRANSITIONS=142} [2024-06-03 20:01:10,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-03 20:01:10,210 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 142 transitions, 1516 flow [2024-06-03 20:01:10,210 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) [2024-06-03 20:01:10,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:10,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:10,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 20:01:10,211 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)] === [2024-06-03 20:01:10,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:10,211 INFO L85 PathProgramCache]: Analyzing trace with hash 240950299, now seen corresponding path program 4 times [2024-06-03 20:01:10,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190240047] [2024-06-03 20:01:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:10,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:11,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:11,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190240047] [2024-06-03 20:01:11,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190240047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:11,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:11,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:11,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326215609] [2024-06-03 20:01:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:11,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:11,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:11,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:11,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:11,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:11,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 142 transitions, 1516 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) [2024-06-03 20:01:11,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:11,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:11,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:11,466 INFO L124 PetriNetUnfolderBase]: 407/719 cut-off events. [2024-06-03 20:01:11,467 INFO L125 PetriNetUnfolderBase]: For 39053/39053 co-relation queries the response was YES. [2024-06-03 20:01:11,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 719 events. 407/719 cut-off events. For 39053/39053 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3156 event pairs, 58 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 5006. Up to 595 conditions per place. [2024-06-03 20:01:11,471 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 126 selfloop transitions, 30 changer transitions 0/158 dead transitions. [2024-06-03 20:01:11,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 158 transitions, 1890 flow [2024-06-03 20:01:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 20:01:11,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 20:01:11,472 INFO L175 Difference]: Start difference. First operand has 169 places, 142 transitions, 1516 flow. Second operand 9 states and 98 transitions. [2024-06-03 20:01:11,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 158 transitions, 1890 flow [2024-06-03 20:01:11,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 158 transitions, 1813 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:11,545 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 1525 flow [2024-06-03 20:01:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1525, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2024-06-03 20:01:11,546 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-03 20:01:11,546 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 1525 flow [2024-06-03 20:01:11,546 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) [2024-06-03 20:01:11,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:11,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 20:01:11,546 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)] === [2024-06-03 20:01:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1813113213, now seen corresponding path program 2 times [2024-06-03 20:01:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:11,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006848203] [2024-06-03 20:01:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:12,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006848203] [2024-06-03 20:01:12,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006848203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:12,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:12,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:12,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674511351] [2024-06-03 20:01:12,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:12,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:12,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:12,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:12,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:12,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 1525 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) [2024-06-03 20:01:12,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:12,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:12,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:13,009 INFO L124 PetriNetUnfolderBase]: 408/721 cut-off events. [2024-06-03 20:01:13,010 INFO L125 PetriNetUnfolderBase]: For 39377/39377 co-relation queries the response was YES. [2024-06-03 20:01:13,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5079 conditions, 721 events. 408/721 cut-off events. For 39377/39377 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3181 event pairs, 59 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 4995. Up to 611 conditions per place. [2024-06-03 20:01:13,015 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 29 changer transitions 0/162 dead transitions. [2024-06-03 20:01:13,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 162 transitions, 1935 flow [2024-06-03 20:01:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:13,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 20:01:13,016 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 1525 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:13,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 162 transitions, 1935 flow [2024-06-03 20:01:13,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 162 transitions, 1859 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:13,092 INFO L231 Difference]: Finished difference. Result has 173 places, 145 transitions, 1556 flow [2024-06-03 20:01:13,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1556, PETRI_PLACES=173, PETRI_TRANSITIONS=145} [2024-06-03 20:01:13,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-03 20:01:13,093 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 145 transitions, 1556 flow [2024-06-03 20:01:13,093 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) [2024-06-03 20:01:13,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:13,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:13,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 20:01:13,093 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)] === [2024-06-03 20:01:13,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash 246520441, now seen corresponding path program 3 times [2024-06-03 20:01:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915769739] [2024-06-03 20:01:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:14,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915769739] [2024-06-03 20:01:14,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915769739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:14,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:14,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530243736] [2024-06-03 20:01:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:14,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:14,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 145 transitions, 1556 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) [2024-06-03 20:01:14,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:14,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:14,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:14,440 INFO L124 PetriNetUnfolderBase]: 414/731 cut-off events. [2024-06-03 20:01:14,440 INFO L125 PetriNetUnfolderBase]: For 40784/40784 co-relation queries the response was YES. [2024-06-03 20:01:14,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 731 events. 414/731 cut-off events. For 40784/40784 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3243 event pairs, 65 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 5066. Up to 669 conditions per place. [2024-06-03 20:01:14,446 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 142 selfloop transitions, 21 changer transitions 0/165 dead transitions. [2024-06-03 20:01:14,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 1976 flow [2024-06-03 20:01:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 20:01:14,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-03 20:01:14,447 INFO L175 Difference]: Start difference. First operand has 173 places, 145 transitions, 1556 flow. Second operand 10 states and 104 transitions. [2024-06-03 20:01:14,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 1976 flow [2024-06-03 20:01:14,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 1891 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:14,533 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1569 flow [2024-06-03 20:01:14,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1569, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2024-06-03 20:01:14,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-03 20:01:14,534 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1569 flow [2024-06-03 20:01:14,534 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) [2024-06-03 20:01:14,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:14,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:14,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 20:01:14,534 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)] === [2024-06-03 20:01:14,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1818685122, now seen corresponding path program 1 times [2024-06-03 20:01:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000200213] [2024-06-03 20:01:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:15,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000200213] [2024-06-03 20:01:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000200213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:15,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:15,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781151420] [2024-06-03 20:01:15,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:15,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:15,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:15,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1569 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) [2024-06-03 20:01:15,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:15,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:15,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:15,879 INFO L124 PetriNetUnfolderBase]: 418/739 cut-off events. [2024-06-03 20:01:15,879 INFO L125 PetriNetUnfolderBase]: For 42147/42147 co-relation queries the response was YES. [2024-06-03 20:01:15,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 739 events. 418/739 cut-off events. For 42147/42147 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3283 event pairs, 71 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 5106. Up to 696 conditions per place. [2024-06-03 20:01:15,885 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 17 changer transitions 0/163 dead transitions. [2024-06-03 20:01:15,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 163 transitions, 1945 flow [2024-06-03 20:01:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-03 20:01:15,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-03 20:01:15,901 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1569 flow. Second operand 10 states and 98 transitions. [2024-06-03 20:01:15,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 163 transitions, 1945 flow [2024-06-03 20:01:15,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 163 transitions, 1893 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:15,983 INFO L231 Difference]: Finished difference. Result has 179 places, 149 transitions, 1573 flow [2024-06-03 20:01:15,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1573, PETRI_PLACES=179, PETRI_TRANSITIONS=149} [2024-06-03 20:01:15,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-03 20:01:15,983 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 149 transitions, 1573 flow [2024-06-03 20:01:15,983 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) [2024-06-03 20:01:15,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:15,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:15,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 20:01:15,984 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)] === [2024-06-03 20:01:15,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:15,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2090693101, now seen corresponding path program 5 times [2024-06-03 20:01:15,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:15,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311909324] [2024-06-03 20:01:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:15,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:16,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311909324] [2024-06-03 20:01:16,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311909324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:16,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:16,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:16,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054083429] [2024-06-03 20:01:16,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:16,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:16,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:16,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:16,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 149 transitions, 1573 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) [2024-06-03 20:01:16,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:16,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:16,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:17,173 INFO L124 PetriNetUnfolderBase]: 422/747 cut-off events. [2024-06-03 20:01:17,173 INFO L125 PetriNetUnfolderBase]: For 43800/43800 co-relation queries the response was YES. [2024-06-03 20:01:17,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5259 conditions, 747 events. 422/747 cut-off events. For 43800/43800 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3348 event pairs, 71 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 5171. Up to 704 conditions per place. [2024-06-03 20:01:17,178 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 147 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-03 20:01:17,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 164 transitions, 1959 flow [2024-06-03 20:01:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-03 20:01:17,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-03 20:01:17,179 INFO L175 Difference]: Start difference. First operand has 179 places, 149 transitions, 1573 flow. Second operand 9 states and 91 transitions. [2024-06-03 20:01:17,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 164 transitions, 1959 flow [2024-06-03 20:01:17,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 164 transitions, 1910 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:17,260 INFO L231 Difference]: Finished difference. Result has 180 places, 150 transitions, 1582 flow [2024-06-03 20:01:17,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=180, PETRI_TRANSITIONS=150} [2024-06-03 20:01:17,260 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-03 20:01:17,260 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 150 transitions, 1582 flow [2024-06-03 20:01:17,260 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) [2024-06-03 20:01:17,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:17,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:17,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 20:01:17,261 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)] === [2024-06-03 20:01:17,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2090699053, now seen corresponding path program 4 times [2024-06-03 20:01:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103318056] [2024-06-03 20:01:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:18,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:18,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103318056] [2024-06-03 20:01:18,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103318056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:18,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:18,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248803427] [2024-06-03 20:01:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:18,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:18,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:18,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 150 transitions, 1582 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) [2024-06-03 20:01:18,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:18,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:18,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:18,433 INFO L124 PetriNetUnfolderBase]: 418/741 cut-off events. [2024-06-03 20:01:18,434 INFO L125 PetriNetUnfolderBase]: For 42233/42233 co-relation queries the response was YES. [2024-06-03 20:01:18,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 741 events. 418/741 cut-off events. For 42233/42233 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3314 event pairs, 66 based on Foata normal form. 2/742 useless extension candidates. Maximal degree in co-relation 5030. Up to 662 conditions per place. [2024-06-03 20:01:18,439 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 139 selfloop transitions, 26 changer transitions 0/167 dead transitions. [2024-06-03 20:01:18,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 167 transitions, 1964 flow [2024-06-03 20:01:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 20:01:18,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 20:01:18,439 INFO L175 Difference]: Start difference. First operand has 180 places, 150 transitions, 1582 flow. Second operand 10 states and 107 transitions. [2024-06-03 20:01:18,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 167 transitions, 1964 flow [2024-06-03 20:01:18,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 167 transitions, 1902 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:18,523 INFO L231 Difference]: Finished difference. Result has 183 places, 150 transitions, 1577 flow [2024-06-03 20:01:18,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1577, PETRI_PLACES=183, PETRI_TRANSITIONS=150} [2024-06-03 20:01:18,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-03 20:01:18,523 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 150 transitions, 1577 flow [2024-06-03 20:01:18,523 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) [2024-06-03 20:01:18,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:18,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:18,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 20:01:18,524 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)] === [2024-06-03 20:01:18,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:18,524 INFO L85 PathProgramCache]: Analyzing trace with hash 240802429, now seen corresponding path program 6 times [2024-06-03 20:01:18,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:18,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246346785] [2024-06-03 20:01:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:18,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:19,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:19,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246346785] [2024-06-03 20:01:19,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246346785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:19,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:19,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:19,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690242229] [2024-06-03 20:01:19,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:19,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:19,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:19,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:19,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 150 transitions, 1577 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) [2024-06-03 20:01:19,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:19,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:19,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:19,685 INFO L124 PetriNetUnfolderBase]: 422/749 cut-off events. [2024-06-03 20:01:19,685 INFO L125 PetriNetUnfolderBase]: For 43772/43772 co-relation queries the response was YES. [2024-06-03 20:01:19,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5187 conditions, 749 events. 422/749 cut-off events. For 43772/43772 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3380 event pairs, 60 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 5097. Up to 649 conditions per place. [2024-06-03 20:01:19,690 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 139 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-03 20:01:19,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 166 transitions, 1969 flow [2024-06-03 20:01:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 20:01:19,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-03 20:01:19,691 INFO L175 Difference]: Start difference. First operand has 183 places, 150 transitions, 1577 flow. Second operand 9 states and 95 transitions. [2024-06-03 20:01:19,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 166 transitions, 1969 flow [2024-06-03 20:01:19,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 166 transitions, 1892 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:19,785 INFO L231 Difference]: Finished difference. Result has 182 places, 151 transitions, 1580 flow [2024-06-03 20:01:19,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1580, PETRI_PLACES=182, PETRI_TRANSITIONS=151} [2024-06-03 20:01:19,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-03 20:01:19,785 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 151 transitions, 1580 flow [2024-06-03 20:01:19,785 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) [2024-06-03 20:01:19,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:19,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:19,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 20:01:19,786 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)] === [2024-06-03 20:01:19,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:19,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1420063979, now seen corresponding path program 7 times [2024-06-03 20:01:19,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:19,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091150888] [2024-06-03 20:01:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:19,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:20,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091150888] [2024-06-03 20:01:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091150888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:20,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:20,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945122698] [2024-06-03 20:01:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:20,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:20,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:20,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 151 transitions, 1580 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) [2024-06-03 20:01:20,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:20,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:20,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:20,977 INFO L124 PetriNetUnfolderBase]: 426/758 cut-off events. [2024-06-03 20:01:20,977 INFO L125 PetriNetUnfolderBase]: For 45734/45740 co-relation queries the response was YES. [2024-06-03 20:01:20,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 758 events. 426/758 cut-off events. For 45734/45740 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3437 event pairs, 69 based on Foata normal form. 6/761 useless extension candidates. Maximal degree in co-relation 5167. Up to 687 conditions per place. [2024-06-03 20:01:20,982 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 138 selfloop transitions, 25 changer transitions 0/165 dead transitions. [2024-06-03 20:01:20,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 165 transitions, 1970 flow [2024-06-03 20:01:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-03 20:01:20,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 20:01:20,983 INFO L175 Difference]: Start difference. First operand has 182 places, 151 transitions, 1580 flow. Second operand 9 states and 93 transitions. [2024-06-03 20:01:20,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 165 transitions, 1970 flow [2024-06-03 20:01:21,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 165 transitions, 1900 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:21,079 INFO L231 Difference]: Finished difference. Result has 184 places, 152 transitions, 1592 flow [2024-06-03 20:01:21,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1592, PETRI_PLACES=184, PETRI_TRANSITIONS=152} [2024-06-03 20:01:21,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-03 20:01:21,079 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 152 transitions, 1592 flow [2024-06-03 20:01:21,080 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) [2024-06-03 20:01:21,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:21,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:21,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 20:01:21,080 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)] === [2024-06-03 20:01:21,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1420058027, now seen corresponding path program 5 times [2024-06-03 20:01:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465487850] [2024-06-03 20:01:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:21,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465487850] [2024-06-03 20:01:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465487850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661184859] [2024-06-03 20:01:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:22,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:22,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:22,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:22,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:22,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 152 transitions, 1592 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) [2024-06-03 20:01:22,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:22,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:22,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:22,442 INFO L124 PetriNetUnfolderBase]: 432/768 cut-off events. [2024-06-03 20:01:22,442 INFO L125 PetriNetUnfolderBase]: For 47415/47421 co-relation queries the response was YES. [2024-06-03 20:01:22,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 768 events. 432/768 cut-off events. For 47415/47421 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3524 event pairs, 63 based on Foata normal form. 6/771 useless extension candidates. Maximal degree in co-relation 5217. Up to 632 conditions per place. [2024-06-03 20:01:22,447 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 42 changer transitions 0/174 dead transitions. [2024-06-03 20:01:22,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 174 transitions, 2077 flow [2024-06-03 20:01:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:22,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 20:01:22,454 INFO L175 Difference]: Start difference. First operand has 184 places, 152 transitions, 1592 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:22,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 174 transitions, 2077 flow [2024-06-03 20:01:22,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 174 transitions, 2005 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:22,578 INFO L231 Difference]: Finished difference. Result has 190 places, 159 transitions, 1752 flow [2024-06-03 20:01:22,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=190, PETRI_TRANSITIONS=159} [2024-06-03 20:01:22,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-03 20:01:22,579 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 159 transitions, 1752 flow [2024-06-03 20:01:22,580 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) [2024-06-03 20:01:22,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:22,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:22,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 20:01:22,580 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)] === [2024-06-03 20:01:22,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:22,580 INFO L85 PathProgramCache]: Analyzing trace with hash 105150444, now seen corresponding path program 2 times [2024-06-03 20:01:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:22,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752825494] [2024-06-03 20:01:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:22,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:23,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:23,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752825494] [2024-06-03 20:01:23,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752825494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:23,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:23,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109632171] [2024-06-03 20:01:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:23,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:23,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:23,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 159 transitions, 1752 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) [2024-06-03 20:01:23,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:23,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:23,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:23,763 INFO L124 PetriNetUnfolderBase]: 436/776 cut-off events. [2024-06-03 20:01:23,763 INFO L125 PetriNetUnfolderBase]: For 48695/48701 co-relation queries the response was YES. [2024-06-03 20:01:23,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 776 events. 436/776 cut-off events. For 48695/48701 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3560 event pairs, 77 based on Foata normal form. 6/779 useless extension candidates. Maximal degree in co-relation 5383. Up to 726 conditions per place. [2024-06-03 20:01:23,770 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 150 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2024-06-03 20:01:23,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 171 transitions, 2138 flow [2024-06-03 20:01:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-03 20:01:23,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 20:01:23,771 INFO L175 Difference]: Start difference. First operand has 190 places, 159 transitions, 1752 flow. Second operand 9 states and 90 transitions. [2024-06-03 20:01:23,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 171 transitions, 2138 flow [2024-06-03 20:01:23,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 171 transitions, 2049 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:23,867 INFO L231 Difference]: Finished difference. Result has 194 places, 160 transitions, 1725 flow [2024-06-03 20:01:23,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1725, PETRI_PLACES=194, PETRI_TRANSITIONS=160} [2024-06-03 20:01:23,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-03 20:01:23,868 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 160 transitions, 1725 flow [2024-06-03 20:01:23,868 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) [2024-06-03 20:01:23,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:23,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 20:01:23,868 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)] === [2024-06-03 20:01:23,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1280313428, now seen corresponding path program 3 times [2024-06-03 20:01:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:23,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903548368] [2024-06-03 20:01:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:23,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:25,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903548368] [2024-06-03 20:01:25,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903548368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:25,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:25,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953189646] [2024-06-03 20:01:25,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:25,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:25,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 160 transitions, 1725 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) [2024-06-03 20:01:25,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:25,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:25,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:25,423 INFO L124 PetriNetUnfolderBase]: 440/784 cut-off events. [2024-06-03 20:01:25,424 INFO L125 PetriNetUnfolderBase]: For 50310/50316 co-relation queries the response was YES. [2024-06-03 20:01:25,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 784 events. 440/784 cut-off events. For 50310/50316 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3611 event pairs, 77 based on Foata normal form. 6/787 useless extension candidates. Maximal degree in co-relation 5382. Up to 713 conditions per place. [2024-06-03 20:01:25,429 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 141 selfloop transitions, 30 changer transitions 0/173 dead transitions. [2024-06-03 20:01:25,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 173 transitions, 2119 flow [2024-06-03 20:01:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 20:01:25,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 20:01:25,430 INFO L175 Difference]: Start difference. First operand has 194 places, 160 transitions, 1725 flow. Second operand 10 states and 100 transitions. [2024-06-03 20:01:25,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 173 transitions, 2119 flow [2024-06-03 20:01:25,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 173 transitions, 2065 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:25,533 INFO L231 Difference]: Finished difference. Result has 197 places, 161 transitions, 1757 flow [2024-06-03 20:01:25,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=197, PETRI_TRANSITIONS=161} [2024-06-03 20:01:25,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-03 20:01:25,534 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 161 transitions, 1757 flow [2024-06-03 20:01:25,534 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) [2024-06-03 20:01:25,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:25,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 20:01:25,535 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)] === [2024-06-03 20:01:25,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1760492011, now seen corresponding path program 8 times [2024-06-03 20:01:25,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:25,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006334070] [2024-06-03 20:01:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006334070] [2024-06-03 20:01:26,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006334070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:26,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:26,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:26,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193582445] [2024-06-03 20:01:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:26,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:26,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:26,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:26,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:26,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:26,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 161 transitions, 1757 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) [2024-06-03 20:01:26,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:26,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:26,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:26,673 INFO L124 PetriNetUnfolderBase]: 444/792 cut-off events. [2024-06-03 20:01:26,673 INFO L125 PetriNetUnfolderBase]: For 52198/52204 co-relation queries the response was YES. [2024-06-03 20:01:26,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 792 events. 444/792 cut-off events. For 52198/52204 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3660 event pairs, 77 based on Foata normal form. 6/795 useless extension candidates. Maximal degree in co-relation 5475. Up to 742 conditions per place. [2024-06-03 20:01:26,678 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 154 selfloop transitions, 18 changer transitions 0/174 dead transitions. [2024-06-03 20:01:26,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 174 transitions, 2163 flow [2024-06-03 20:01:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-03 20:01:26,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 20:01:26,679 INFO L175 Difference]: Start difference. First operand has 197 places, 161 transitions, 1757 flow. Second operand 9 states and 90 transitions. [2024-06-03 20:01:26,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 174 transitions, 2163 flow [2024-06-03 20:01:26,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 174 transitions, 2078 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:26,793 INFO L231 Difference]: Finished difference. Result has 198 places, 162 transitions, 1742 flow [2024-06-03 20:01:26,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1742, PETRI_PLACES=198, PETRI_TRANSITIONS=162} [2024-06-03 20:01:26,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-03 20:01:26,794 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 162 transitions, 1742 flow [2024-06-03 20:01:26,794 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) [2024-06-03 20:01:26,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:26,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:26,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 20:01:26,794 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)] === [2024-06-03 20:01:26,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1080652007, now seen corresponding path program 9 times [2024-06-03 20:01:26,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:26,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174682856] [2024-06-03 20:01:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:27,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174682856] [2024-06-03 20:01:27,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174682856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:27,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:27,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:27,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121522235] [2024-06-03 20:01:27,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:27,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:27,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:27,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:27,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:27,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 162 transitions, 1742 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) [2024-06-03 20:01:27,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:27,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:27,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:28,065 INFO L124 PetriNetUnfolderBase]: 448/800 cut-off events. [2024-06-03 20:01:28,066 INFO L125 PetriNetUnfolderBase]: For 53955/53961 co-relation queries the response was YES. [2024-06-03 20:01:28,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5619 conditions, 800 events. 448/800 cut-off events. For 53955/53961 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3714 event pairs, 68 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 5520. Up to 687 conditions per place. [2024-06-03 20:01:28,071 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 144 selfloop transitions, 30 changer transitions 0/176 dead transitions. [2024-06-03 20:01:28,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 176 transitions, 2156 flow [2024-06-03 20:01:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 20:01:28,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-03 20:01:28,073 INFO L175 Difference]: Start difference. First operand has 198 places, 162 transitions, 1742 flow. Second operand 9 states and 95 transitions. [2024-06-03 20:01:28,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 176 transitions, 2156 flow [2024-06-03 20:01:28,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 176 transitions, 2096 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:28,186 INFO L231 Difference]: Finished difference. Result has 200 places, 163 transitions, 1778 flow [2024-06-03 20:01:28,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1778, PETRI_PLACES=200, PETRI_TRANSITIONS=163} [2024-06-03 20:01:28,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-03 20:01:28,186 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 163 transitions, 1778 flow [2024-06-03 20:01:28,186 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) [2024-06-03 20:01:28,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:28,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:28,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 20:01:28,187 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)] === [2024-06-03 20:01:28,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1766002261, now seen corresponding path program 10 times [2024-06-03 20:01:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343326414] [2024-06-03 20:01:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343326414] [2024-06-03 20:01:29,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343326414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483256202] [2024-06-03 20:01:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:29,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:29,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:29,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 163 transitions, 1778 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) [2024-06-03 20:01:29,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:29,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:29,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:29,450 INFO L124 PetriNetUnfolderBase]: 445/795 cut-off events. [2024-06-03 20:01:29,451 INFO L125 PetriNetUnfolderBase]: For 51417/51423 co-relation queries the response was YES. [2024-06-03 20:01:29,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 795 events. 445/795 cut-off events. For 51417/51423 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3684 event pairs, 65 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 5371. Up to 682 conditions per place. [2024-06-03 20:01:29,457 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 145 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2024-06-03 20:01:29,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 176 transitions, 2160 flow [2024-06-03 20:01:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-03 20:01:29,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-03 20:01:29,458 INFO L175 Difference]: Start difference. First operand has 200 places, 163 transitions, 1778 flow. Second operand 9 states and 94 transitions. [2024-06-03 20:01:29,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 176 transitions, 2160 flow [2024-06-03 20:01:29,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 176 transitions, 2074 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:29,573 INFO L231 Difference]: Finished difference. Result has 202 places, 163 transitions, 1754 flow [2024-06-03 20:01:29,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1754, PETRI_PLACES=202, PETRI_TRANSITIONS=163} [2024-06-03 20:01:29,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-03 20:01:29,574 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 163 transitions, 1754 flow [2024-06-03 20:01:29,574 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) [2024-06-03 20:01:29,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:29,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:29,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 20:01:29,574 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)] === [2024-06-03 20:01:29,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1419856217, now seen corresponding path program 6 times [2024-06-03 20:01:29,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:29,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989700260] [2024-06-03 20:01:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:29,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:30,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:30,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989700260] [2024-06-03 20:01:30,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989700260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:30,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:30,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:30,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970267460] [2024-06-03 20:01:30,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:30,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:30,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:30,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:30,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 163 transitions, 1754 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) [2024-06-03 20:01:30,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:30,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:30,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:30,870 INFO L124 PetriNetUnfolderBase]: 441/789 cut-off events. [2024-06-03 20:01:30,871 INFO L125 PetriNetUnfolderBase]: For 48814/48820 co-relation queries the response was YES. [2024-06-03 20:01:30,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5280 conditions, 789 events. 441/789 cut-off events. For 48814/48820 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3698 event pairs, 63 based on Foata normal form. 6/792 useless extension candidates. Maximal degree in co-relation 5179. Up to 653 conditions per place. [2024-06-03 20:01:30,876 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 41 changer transitions 0/179 dead transitions. [2024-06-03 20:01:30,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 179 transitions, 2158 flow [2024-06-03 20:01:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 20:01:30,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 20:01:30,879 INFO L175 Difference]: Start difference. First operand has 202 places, 163 transitions, 1754 flow. Second operand 10 states and 108 transitions. [2024-06-03 20:01:30,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 179 transitions, 2158 flow [2024-06-03 20:01:30,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 179 transitions, 2025 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:30,990 INFO L231 Difference]: Finished difference. Result has 204 places, 163 transitions, 1708 flow [2024-06-03 20:01:30,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1708, PETRI_PLACES=204, PETRI_TRANSITIONS=163} [2024-06-03 20:01:30,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-03 20:01:30,991 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 163 transitions, 1708 flow [2024-06-03 20:01:30,991 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) [2024-06-03 20:01:30,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:30,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:30,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 20:01:30,991 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)] === [2024-06-03 20:01:30,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1163355707, now seen corresponding path program 7 times [2024-06-03 20:01:30,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:30,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687703155] [2024-06-03 20:01:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:30,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:31,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687703155] [2024-06-03 20:01:31,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687703155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:31,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966927348] [2024-06-03 20:01:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:31,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:31,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:31,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 163 transitions, 1708 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) [2024-06-03 20:01:31,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:31,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:31,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:32,152 INFO L124 PetriNetUnfolderBase]: 437/782 cut-off events. [2024-06-03 20:01:32,152 INFO L125 PetriNetUnfolderBase]: For 45250/45250 co-relation queries the response was YES. [2024-06-03 20:01:32,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 782 events. 437/782 cut-off events. For 45250/45250 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3617 event pairs, 75 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 4961. Up to 727 conditions per place. [2024-06-03 20:01:32,158 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2024-06-03 20:01:32,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 175 transitions, 2086 flow [2024-06-03 20:01:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 20:01:32,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 20:01:32,159 INFO L175 Difference]: Start difference. First operand has 204 places, 163 transitions, 1708 flow. Second operand 10 states and 100 transitions. [2024-06-03 20:01:32,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 175 transitions, 2086 flow [2024-06-03 20:01:32,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 175 transitions, 1948 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 20:01:32,267 INFO L231 Difference]: Finished difference. Result has 205 places, 163 transitions, 1619 flow [2024-06-03 20:01:32,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1619, PETRI_PLACES=205, PETRI_TRANSITIONS=163} [2024-06-03 20:01:32,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-03 20:01:32,268 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 163 transitions, 1619 flow [2024-06-03 20:01:32,268 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) [2024-06-03 20:01:32,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:32,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:32,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 20:01:32,268 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)] === [2024-06-03 20:01:32,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1765848439, now seen corresponding path program 8 times [2024-06-03 20:01:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:32,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030503538] [2024-06-03 20:01:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030503538] [2024-06-03 20:01:33,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030503538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:33,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:33,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185929259] [2024-06-03 20:01:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:33,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:33,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:33,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 163 transitions, 1619 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) [2024-06-03 20:01:33,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:33,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:33,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:33,511 INFO L124 PetriNetUnfolderBase]: 433/777 cut-off events. [2024-06-03 20:01:33,511 INFO L125 PetriNetUnfolderBase]: For 42025/42031 co-relation queries the response was YES. [2024-06-03 20:01:33,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 777 events. 433/777 cut-off events. For 42025/42031 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3614 event pairs, 65 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4683. Up to 654 conditions per place. [2024-06-03 20:01:33,516 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 32 changer transitions 0/176 dead transitions. [2024-06-03 20:01:33,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 176 transitions, 2005 flow [2024-06-03 20:01:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 20:01:33,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 20:01:33,517 INFO L175 Difference]: Start difference. First operand has 205 places, 163 transitions, 1619 flow. Second operand 9 states and 97 transitions. [2024-06-03 20:01:33,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 176 transitions, 2005 flow [2024-06-03 20:01:33,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 176 transitions, 1952 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:01:33,616 INFO L231 Difference]: Finished difference. Result has 205 places, 163 transitions, 1636 flow [2024-06-03 20:01:33,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1636, PETRI_PLACES=205, PETRI_TRANSITIONS=163} [2024-06-03 20:01:33,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-03 20:01:33,616 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 163 transitions, 1636 flow [2024-06-03 20:01:33,616 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) [2024-06-03 20:01:33,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:33,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:33,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 20:01:33,617 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)] === [2024-06-03 20:01:33,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1163347988, now seen corresponding path program 4 times [2024-06-03 20:01:33,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:33,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72720860] [2024-06-03 20:01:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:33,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:34,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72720860] [2024-06-03 20:01:34,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72720860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:34,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:34,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:34,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820539921] [2024-06-03 20:01:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:34,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:34,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:34,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:34,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 163 transitions, 1636 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) [2024-06-03 20:01:34,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:34,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:34,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:34,802 INFO L124 PetriNetUnfolderBase]: 437/784 cut-off events. [2024-06-03 20:01:34,802 INFO L125 PetriNetUnfolderBase]: For 43539/43539 co-relation queries the response was YES. [2024-06-03 20:01:34,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 784 events. 437/784 cut-off events. For 43539/43539 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3661 event pairs, 78 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 4778. Up to 743 conditions per place. [2024-06-03 20:01:34,808 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 155 selfloop transitions, 17 changer transitions 0/174 dead transitions. [2024-06-03 20:01:34,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 174 transitions, 2024 flow [2024-06-03 20:01:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:34,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-03 20:01:34,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-03 20:01:34,809 INFO L175 Difference]: Start difference. First operand has 205 places, 163 transitions, 1636 flow. Second operand 9 states and 89 transitions. [2024-06-03 20:01:34,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 174 transitions, 2024 flow [2024-06-03 20:01:34,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 174 transitions, 1942 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:34,920 INFO L231 Difference]: Finished difference. Result has 207 places, 164 transitions, 1615 flow [2024-06-03 20:01:34,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=207, PETRI_TRANSITIONS=164} [2024-06-03 20:01:34,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-03 20:01:34,920 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 164 transitions, 1615 flow [2024-06-03 20:01:34,921 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) [2024-06-03 20:01:34,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:34,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:34,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 20:01:34,921 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)] === [2024-06-03 20:01:34,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash 105142725, now seen corresponding path program 9 times [2024-06-03 20:01:34,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:34,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210439523] [2024-06-03 20:01:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:34,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:36,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:36,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210439523] [2024-06-03 20:01:36,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210439523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:36,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:36,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064389336] [2024-06-03 20:01:36,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:36,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:36,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:36,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 164 transitions, 1615 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) [2024-06-03 20:01:36,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:36,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:36,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:36,554 INFO L124 PetriNetUnfolderBase]: 443/795 cut-off events. [2024-06-03 20:01:36,554 INFO L125 PetriNetUnfolderBase]: For 44692/44698 co-relation queries the response was YES. [2024-06-03 20:01:36,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 795 events. 443/795 cut-off events. For 44692/44698 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3743 event pairs, 72 based on Foata normal form. 6/798 useless extension candidates. Maximal degree in co-relation 4807. Up to 706 conditions per place. [2024-06-03 20:01:36,560 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 28 changer transitions 0/182 dead transitions. [2024-06-03 20:01:36,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 182 transitions, 2193 flow [2024-06-03 20:01:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:36,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 20:01:36,561 INFO L175 Difference]: Start difference. First operand has 207 places, 164 transitions, 1615 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:36,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 182 transitions, 2193 flow [2024-06-03 20:01:36,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 182 transitions, 2144 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:36,672 INFO L231 Difference]: Finished difference. Result has 210 places, 166 transitions, 1661 flow [2024-06-03 20:01:36,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1661, PETRI_PLACES=210, PETRI_TRANSITIONS=166} [2024-06-03 20:01:36,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-03 20:01:36,673 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 166 transitions, 1661 flow [2024-06-03 20:01:36,673 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) [2024-06-03 20:01:36,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:36,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:36,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 20:01:36,673 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)] === [2024-06-03 20:01:36,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:36,673 INFO L85 PathProgramCache]: Analyzing trace with hash 104940915, now seen corresponding path program 10 times [2024-06-03 20:01:36,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:36,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858929036] [2024-06-03 20:01:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:36,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858929036] [2024-06-03 20:01:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858929036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:37,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:37,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817720280] [2024-06-03 20:01:37,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:37,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:37,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 166 transitions, 1661 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) [2024-06-03 20:01:37,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:37,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:37,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:37,929 INFO L124 PetriNetUnfolderBase]: 439/789 cut-off events. [2024-06-03 20:01:37,930 INFO L125 PetriNetUnfolderBase]: For 41186/41192 co-relation queries the response was YES. [2024-06-03 20:01:37,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4761 conditions, 789 events. 439/789 cut-off events. For 41186/41192 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3708 event pairs, 72 based on Foata normal form. 6/792 useless extension candidates. Maximal degree in co-relation 4656. Up to 703 conditions per place. [2024-06-03 20:01:37,935 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-06-03 20:01:37,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 181 transitions, 2065 flow [2024-06-03 20:01:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:37,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 20:01:37,936 INFO L175 Difference]: Start difference. First operand has 210 places, 166 transitions, 1661 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:37,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 181 transitions, 2065 flow [2024-06-03 20:01:38,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 181 transitions, 1979 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:38,043 INFO L231 Difference]: Finished difference. Result has 212 places, 166 transitions, 1638 flow [2024-06-03 20:01:38,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1638, PETRI_PLACES=212, PETRI_TRANSITIONS=166} [2024-06-03 20:01:38,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-03 20:01:38,044 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 166 transitions, 1638 flow [2024-06-03 20:01:38,044 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) [2024-06-03 20:01:38,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:38,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 20:01:38,044 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)] === [2024-06-03 20:01:38,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1153824788, now seen corresponding path program 5 times [2024-06-03 20:01:38,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:38,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853742164] [2024-06-03 20:01:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:38,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853742164] [2024-06-03 20:01:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853742164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:38,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:38,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648559788] [2024-06-03 20:01:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:38,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:38,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 166 transitions, 1638 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) [2024-06-03 20:01:38,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:38,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:38,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:39,216 INFO L124 PetriNetUnfolderBase]: 436/783 cut-off events. [2024-06-03 20:01:39,216 INFO L125 PetriNetUnfolderBase]: For 37237/37237 co-relation queries the response was YES. [2024-06-03 20:01:39,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 783 events. 436/783 cut-off events. For 37237/37237 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3664 event pairs, 76 based on Foata normal form. 2/784 useless extension candidates. Maximal degree in co-relation 4474. Up to 728 conditions per place. [2024-06-03 20:01:39,222 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 157 selfloop transitions, 19 changer transitions 0/178 dead transitions. [2024-06-03 20:01:39,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 178 transitions, 2018 flow [2024-06-03 20:01:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-03 20:01:39,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-03 20:01:39,223 INFO L175 Difference]: Start difference. First operand has 212 places, 166 transitions, 1638 flow. Second operand 10 states and 97 transitions. [2024-06-03 20:01:39,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 178 transitions, 2018 flow [2024-06-03 20:01:39,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 178 transitions, 1942 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:39,322 INFO L231 Difference]: Finished difference. Result has 212 places, 166 transitions, 1604 flow [2024-06-03 20:01:39,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1604, PETRI_PLACES=212, PETRI_TRANSITIONS=166} [2024-06-03 20:01:39,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-03 20:01:39,322 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 166 transitions, 1604 flow [2024-06-03 20:01:39,323 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) [2024-06-03 20:01:39,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:39,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:39,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 20:01:39,323 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)] === [2024-06-03 20:01:39,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:39,323 INFO L85 PathProgramCache]: Analyzing trace with hash 789487974, now seen corresponding path program 1 times [2024-06-03 20:01:39,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:39,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049844641] [2024-06-03 20:01:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049844641] [2024-06-03 20:01:40,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049844641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:40,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:40,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:40,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642589311] [2024-06-03 20:01:40,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:40,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:40,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:40,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:40,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:40,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 166 transitions, 1604 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) [2024-06-03 20:01:40,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:40,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:40,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:40,608 INFO L124 PetriNetUnfolderBase]: 440/791 cut-off events. [2024-06-03 20:01:40,608 INFO L125 PetriNetUnfolderBase]: For 38562/38562 co-relation queries the response was YES. [2024-06-03 20:01:40,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 791 events. 440/791 cut-off events. For 38562/38562 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3733 event pairs, 59 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 4520. Up to 690 conditions per place. [2024-06-03 20:01:40,613 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 19 changer transitions 0/186 dead transitions. [2024-06-03 20:01:40,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 186 transitions, 2052 flow [2024-06-03 20:01:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 20:01:40,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-03 20:01:40,614 INFO L175 Difference]: Start difference. First operand has 212 places, 166 transitions, 1604 flow. Second operand 10 states and 101 transitions. [2024-06-03 20:01:40,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 186 transitions, 2052 flow [2024-06-03 20:01:40,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 186 transitions, 1969 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 20:01:40,730 INFO L231 Difference]: Finished difference. Result has 213 places, 167 transitions, 1595 flow [2024-06-03 20:01:40,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1595, PETRI_PLACES=213, PETRI_TRANSITIONS=167} [2024-06-03 20:01:40,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-03 20:01:40,730 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 167 transitions, 1595 flow [2024-06-03 20:01:40,731 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) [2024-06-03 20:01:40,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:40,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:40,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 20:01:40,731 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)] === [2024-06-03 20:01:40,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1586600704, now seen corresponding path program 2 times [2024-06-03 20:01:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494085390] [2024-06-03 20:01:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:41,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:41,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494085390] [2024-06-03 20:01:41,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494085390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:41,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:41,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:41,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494679806] [2024-06-03 20:01:41,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:41,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:41,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:41,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:41,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 167 transitions, 1595 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) [2024-06-03 20:01:41,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:41,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:41,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:42,016 INFO L124 PetriNetUnfolderBase]: 444/799 cut-off events. [2024-06-03 20:01:42,017 INFO L125 PetriNetUnfolderBase]: For 39699/39699 co-relation queries the response was YES. [2024-06-03 20:01:42,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 799 events. 444/799 cut-off events. For 39699/39699 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3809 event pairs, 66 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 4576. Up to 698 conditions per place. [2024-06-03 20:01:42,022 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 161 selfloop transitions, 24 changer transitions 0/187 dead transitions. [2024-06-03 20:01:42,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 187 transitions, 2049 flow [2024-06-03 20:01:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 20:01:42,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 20:01:42,023 INFO L175 Difference]: Start difference. First operand has 213 places, 167 transitions, 1595 flow. Second operand 10 states and 103 transitions. [2024-06-03 20:01:42,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 187 transitions, 2049 flow [2024-06-03 20:01:42,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 187 transitions, 1985 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:42,138 INFO L231 Difference]: Finished difference. Result has 215 places, 168 transitions, 1617 flow [2024-06-03 20:01:42,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1617, PETRI_PLACES=215, PETRI_TRANSITIONS=168} [2024-06-03 20:01:42,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-03 20:01:42,139 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 168 transitions, 1617 flow [2024-06-03 20:01:42,139 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) [2024-06-03 20:01:42,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:42,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 20:01:42,139 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)] === [2024-06-03 20:01:42,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash 792284484, now seen corresponding path program 3 times [2024-06-03 20:01:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:42,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360557698] [2024-06-03 20:01:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:42,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:42,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360557698] [2024-06-03 20:01:42,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360557698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:42,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:42,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646383397] [2024-06-03 20:01:42,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:42,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:42,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:42,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:43,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:43,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 168 transitions, 1617 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) [2024-06-03 20:01:43,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:43,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:43,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:43,332 INFO L124 PetriNetUnfolderBase]: 455/820 cut-off events. [2024-06-03 20:01:43,333 INFO L125 PetriNetUnfolderBase]: For 48188/48188 co-relation queries the response was YES. [2024-06-03 20:01:43,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5016 conditions, 820 events. 455/820 cut-off events. For 48188/48188 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3939 event pairs, 69 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 4907. Up to 692 conditions per place. [2024-06-03 20:01:43,338 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 30 changer transitions 0/190 dead transitions. [2024-06-03 20:01:43,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 190 transitions, 2263 flow [2024-06-03 20:01:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 20:01:43,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 20:01:43,339 INFO L175 Difference]: Start difference. First operand has 215 places, 168 transitions, 1617 flow. Second operand 10 states and 107 transitions. [2024-06-03 20:01:43,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 190 transitions, 2263 flow [2024-06-03 20:01:43,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 190 transitions, 2187 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:43,469 INFO L231 Difference]: Finished difference. Result has 217 places, 170 transitions, 1675 flow [2024-06-03 20:01:43,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1675, PETRI_PLACES=217, PETRI_TRANSITIONS=170} [2024-06-03 20:01:43,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-03 20:01:43,469 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 170 transitions, 1675 flow [2024-06-03 20:01:43,469 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) [2024-06-03 20:01:43,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:43,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:43,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 20:01:43,469 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)] === [2024-06-03 20:01:43,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1217236344, now seen corresponding path program 4 times [2024-06-03 20:01:43,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:43,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741452166] [2024-06-03 20:01:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:43,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:44,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:44,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741452166] [2024-06-03 20:01:44,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741452166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:44,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:44,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:44,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759881731] [2024-06-03 20:01:44,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:44,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:44,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:44,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:44,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:44,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 170 transitions, 1675 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) [2024-06-03 20:01:44,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:44,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:44,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:44,744 INFO L124 PetriNetUnfolderBase]: 452/815 cut-off events. [2024-06-03 20:01:44,744 INFO L125 PetriNetUnfolderBase]: For 43717/43717 co-relation queries the response was YES. [2024-06-03 20:01:44,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4810 conditions, 815 events. 452/815 cut-off events. For 43717/43717 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3914 event pairs, 70 based on Foata normal form. 2/816 useless extension candidates. Maximal degree in co-relation 4700. Up to 706 conditions per place. [2024-06-03 20:01:44,749 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 30 changer transitions 0/189 dead transitions. [2024-06-03 20:01:44,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 189 transitions, 2105 flow [2024-06-03 20:01:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 20:01:44,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 20:01:44,750 INFO L175 Difference]: Start difference. First operand has 217 places, 170 transitions, 1675 flow. Second operand 10 states and 105 transitions. [2024-06-03 20:01:44,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 189 transitions, 2105 flow [2024-06-03 20:01:44,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 189 transitions, 2002 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:44,869 INFO L231 Difference]: Finished difference. Result has 221 places, 170 transitions, 1637 flow [2024-06-03 20:01:44,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1637, PETRI_PLACES=221, PETRI_TRANSITIONS=170} [2024-06-03 20:01:44,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-03 20:01:44,869 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 170 transitions, 1637 flow [2024-06-03 20:01:44,869 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) [2024-06-03 20:01:44,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:44,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 20:01:44,870 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)] === [2024-06-03 20:01:44,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1217236530, now seen corresponding path program 1 times [2024-06-03 20:01:44,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:44,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002346679] [2024-06-03 20:01:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:45,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:45,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002346679] [2024-06-03 20:01:45,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002346679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:45,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:45,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350221734] [2024-06-03 20:01:45,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:45,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:45,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:45,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:45,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 170 transitions, 1637 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) [2024-06-03 20:01:45,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:45,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:45,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:46,251 INFO L124 PetriNetUnfolderBase]: 450/812 cut-off events. [2024-06-03 20:01:46,251 INFO L125 PetriNetUnfolderBase]: For 38266/38266 co-relation queries the response was YES. [2024-06-03 20:01:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 812 events. 450/812 cut-off events. For 38266/38266 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3884 event pairs, 69 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 4531. Up to 700 conditions per place. [2024-06-03 20:01:46,257 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 33 changer transitions 0/189 dead transitions. [2024-06-03 20:01:46,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 189 transitions, 2069 flow [2024-06-03 20:01:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:46,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 20:01:46,258 INFO L175 Difference]: Start difference. First operand has 221 places, 170 transitions, 1637 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:46,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 189 transitions, 2069 flow [2024-06-03 20:01:46,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 189 transitions, 1998 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 20:01:46,371 INFO L231 Difference]: Finished difference. Result has 222 places, 170 transitions, 1640 flow [2024-06-03 20:01:46,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1640, PETRI_PLACES=222, PETRI_TRANSITIONS=170} [2024-06-03 20:01:46,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-03 20:01:46,371 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 170 transitions, 1640 flow [2024-06-03 20:01:46,371 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) [2024-06-03 20:01:46,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:46,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:46,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 20:01:46,372 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)] === [2024-06-03 20:01:46,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1702191768, now seen corresponding path program 1 times [2024-06-03 20:01:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:46,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755933227] [2024-06-03 20:01:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755933227] [2024-06-03 20:01:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755933227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:47,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:47,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:47,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298437017] [2024-06-03 20:01:47,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:47,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:47,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:47,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:47,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 170 transitions, 1640 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) [2024-06-03 20:01:47,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:47,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:47,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:47,901 INFO L124 PetriNetUnfolderBase]: 466/848 cut-off events. [2024-06-03 20:01:47,902 INFO L125 PetriNetUnfolderBase]: For 64521/64521 co-relation queries the response was YES. [2024-06-03 20:01:47,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 848 events. 466/848 cut-off events. For 64521/64521 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4122 event pairs, 70 based on Foata normal form. 10/857 useless extension candidates. Maximal degree in co-relation 4679. Up to 708 conditions per place. [2024-06-03 20:01:47,908 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 24 changer transitions 11/195 dead transitions. [2024-06-03 20:01:47,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 195 transitions, 2126 flow [2024-06-03 20:01:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:01:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:01:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 20:01:47,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-03 20:01:47,909 INFO L175 Difference]: Start difference. First operand has 222 places, 170 transitions, 1640 flow. Second operand 11 states and 117 transitions. [2024-06-03 20:01:47,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 195 transitions, 2126 flow [2024-06-03 20:01:48,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 195 transitions, 1967 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-03 20:01:48,042 INFO L231 Difference]: Finished difference. Result has 221 places, 167 transitions, 1504 flow [2024-06-03 20:01:48,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1504, PETRI_PLACES=221, PETRI_TRANSITIONS=167} [2024-06-03 20:01:48,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-03 20:01:48,042 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 167 transitions, 1504 flow [2024-06-03 20:01:48,042 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) [2024-06-03 20:01:48,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:48,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 20:01:48,043 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)] === [2024-06-03 20:01:48,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash 827676518, now seen corresponding path program 5 times [2024-06-03 20:01:48,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:48,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075612330] [2024-06-03 20:01:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:48,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075612330] [2024-06-03 20:01:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075612330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:48,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:48,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:48,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793439128] [2024-06-03 20:01:48,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:48,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:48,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:48,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:48,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:49,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:49,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 167 transitions, 1504 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) [2024-06-03 20:01:49,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:49,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:49,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:49,388 INFO L124 PetriNetUnfolderBase]: 444/806 cut-off events. [2024-06-03 20:01:49,388 INFO L125 PetriNetUnfolderBase]: For 42770/42770 co-relation queries the response was YES. [2024-06-03 20:01:49,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4511 conditions, 806 events. 444/806 cut-off events. For 42770/42770 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3909 event pairs, 65 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4400. Up to 610 conditions per place. [2024-06-03 20:01:49,393 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 47 changer transitions 0/185 dead transitions. [2024-06-03 20:01:49,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 185 transitions, 1954 flow [2024-06-03 20:01:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:01:49,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-03 20:01:49,394 INFO L175 Difference]: Start difference. First operand has 221 places, 167 transitions, 1504 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:01:49,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 185 transitions, 1954 flow [2024-06-03 20:01:49,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 185 transitions, 1875 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:01:49,501 INFO L231 Difference]: Finished difference. Result has 217 places, 168 transitions, 1561 flow [2024-06-03 20:01:49,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1561, PETRI_PLACES=217, PETRI_TRANSITIONS=168} [2024-06-03 20:01:49,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-03 20:01:49,502 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 168 transitions, 1561 flow [2024-06-03 20:01:49,502 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) [2024-06-03 20:01:49,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:49,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 20:01:49,502 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)] === [2024-06-03 20:01:49,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1000339388, now seen corresponding path program 6 times [2024-06-03 20:01:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:49,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613061050] [2024-06-03 20:01:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613061050] [2024-06-03 20:01:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613061050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:50,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157658779] [2024-06-03 20:01:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:50,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:50,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:50,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:50,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 168 transitions, 1561 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) [2024-06-03 20:01:50,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:50,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:50,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:50,776 INFO L124 PetriNetUnfolderBase]: 464/850 cut-off events. [2024-06-03 20:01:50,776 INFO L125 PetriNetUnfolderBase]: For 71734/71734 co-relation queries the response was YES. [2024-06-03 20:01:50,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 850 events. 464/850 cut-off events. For 71734/71734 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4158 event pairs, 73 based on Foata normal form. 12/861 useless extension candidates. Maximal degree in co-relation 4617. Up to 723 conditions per place. [2024-06-03 20:01:50,781 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 23 changer transitions 7/190 dead transitions. [2024-06-03 20:01:50,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 190 transitions, 2061 flow [2024-06-03 20:01:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:01:50,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-03 20:01:50,782 INFO L175 Difference]: Start difference. First operand has 217 places, 168 transitions, 1561 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:01:50,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 190 transitions, 2061 flow [2024-06-03 20:01:50,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 190 transitions, 1935 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:50,921 INFO L231 Difference]: Finished difference. Result has 219 places, 166 transitions, 1501 flow [2024-06-03 20:01:50,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1501, PETRI_PLACES=219, PETRI_TRANSITIONS=166} [2024-06-03 20:01:50,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-03 20:01:50,922 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 166 transitions, 1501 flow [2024-06-03 20:01:50,922 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) [2024-06-03 20:01:50,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:50,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 20:01:50,922 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)] === [2024-06-03 20:01:50,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash 823203218, now seen corresponding path program 7 times [2024-06-03 20:01:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:50,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84109346] [2024-06-03 20:01:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84109346] [2024-06-03 20:01:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84109346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546353352] [2024-06-03 20:01:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:52,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:52,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 166 transitions, 1501 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) [2024-06-03 20:01:52,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:52,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:52,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:52,318 INFO L124 PetriNetUnfolderBase]: 444/810 cut-off events. [2024-06-03 20:01:52,319 INFO L125 PetriNetUnfolderBase]: For 44508/44508 co-relation queries the response was YES. [2024-06-03 20:01:52,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 810 events. 444/810 cut-off events. For 44508/44508 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3942 event pairs, 67 based on Foata normal form. 2/811 useless extension candidates. Maximal degree in co-relation 4417. Up to 688 conditions per place. [2024-06-03 20:01:52,324 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 29 changer transitions 0/184 dead transitions. [2024-06-03 20:01:52,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 184 transitions, 1951 flow [2024-06-03 20:01:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:01:52,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 20:01:52,325 INFO L175 Difference]: Start difference. First operand has 219 places, 166 transitions, 1501 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:01:52,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 184 transitions, 1951 flow [2024-06-03 20:01:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 184 transitions, 1865 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:52,455 INFO L231 Difference]: Finished difference. Result has 219 places, 167 transitions, 1519 flow [2024-06-03 20:01:52,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=219, PETRI_TRANSITIONS=167} [2024-06-03 20:01:52,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-03 20:01:52,455 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 167 transitions, 1519 flow [2024-06-03 20:01:52,455 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) [2024-06-03 20:01:52,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:52,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:52,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 20:01:52,455 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)] === [2024-06-03 20:01:52,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1000585342, now seen corresponding path program 2 times [2024-06-03 20:01:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:52,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866328222] [2024-06-03 20:01:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:52,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:53,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866328222] [2024-06-03 20:01:53,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866328222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:53,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:53,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459700759] [2024-06-03 20:01:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:53,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:53,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:53,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:53,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 167 transitions, 1519 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) [2024-06-03 20:01:53,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:53,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:53,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:53,623 INFO L124 PetriNetUnfolderBase]: 492/910 cut-off events. [2024-06-03 20:01:53,623 INFO L125 PetriNetUnfolderBase]: For 99490/99490 co-relation queries the response was YES. [2024-06-03 20:01:53,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5867 conditions, 910 events. 492/910 cut-off events. For 99490/99490 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4535 event pairs, 87 based on Foata normal form. 8/917 useless extension candidates. Maximal degree in co-relation 5757. Up to 703 conditions per place. [2024-06-03 20:01:53,628 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 164 selfloop transitions, 19 changer transitions 8/193 dead transitions. [2024-06-03 20:01:53,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 193 transitions, 2211 flow [2024-06-03 20:01:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:01:53,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-03 20:01:53,629 INFO L175 Difference]: Start difference. First operand has 219 places, 167 transitions, 1519 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:01:53,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 193 transitions, 2211 flow [2024-06-03 20:01:53,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 193 transitions, 2117 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:53,822 INFO L231 Difference]: Finished difference. Result has 221 places, 164 transitions, 1446 flow [2024-06-03 20:01:53,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1446, PETRI_PLACES=221, PETRI_TRANSITIONS=164} [2024-06-03 20:01:53,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-03 20:01:53,823 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 164 transitions, 1446 flow [2024-06-03 20:01:53,823 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) [2024-06-03 20:01:53,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:53,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 20:01:53,823 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)] === [2024-06-03 20:01:53,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1000346332, now seen corresponding path program 3 times [2024-06-03 20:01:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:53,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739974122] [2024-06-03 20:01:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:54,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739974122] [2024-06-03 20:01:54,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739974122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:54,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:54,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:54,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040515317] [2024-06-03 20:01:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:54,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:54,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:54,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:54,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:54,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 164 transitions, 1446 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) [2024-06-03 20:01:54,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:54,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:54,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:55,286 INFO L124 PetriNetUnfolderBase]: 489/905 cut-off events. [2024-06-03 20:01:55,287 INFO L125 PetriNetUnfolderBase]: For 107479/107479 co-relation queries the response was YES. [2024-06-03 20:01:55,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5778 conditions, 905 events. 489/905 cut-off events. For 107479/107479 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4502 event pairs, 95 based on Foata normal form. 10/914 useless extension candidates. Maximal degree in co-relation 5667. Up to 795 conditions per place. [2024-06-03 20:01:55,293 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 18 changer transitions 9/187 dead transitions. [2024-06-03 20:01:55,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 187 transitions, 1908 flow [2024-06-03 20:01:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:01:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:01:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 20:01:55,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 20:01:55,294 INFO L175 Difference]: Start difference. First operand has 221 places, 164 transitions, 1446 flow. Second operand 11 states and 116 transitions. [2024-06-03 20:01:55,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 187 transitions, 1908 flow [2024-06-03 20:01:55,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 187 transitions, 1868 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:55,491 INFO L231 Difference]: Finished difference. Result has 219 places, 161 transitions, 1421 flow [2024-06-03 20:01:55,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1421, PETRI_PLACES=219, PETRI_TRANSITIONS=161} [2024-06-03 20:01:55,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-03 20:01:55,492 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 161 transitions, 1421 flow [2024-06-03 20:01:55,492 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) [2024-06-03 20:01:55,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:55,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:55,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 20:01:55,492 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)] === [2024-06-03 20:01:55,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:55,493 INFO L85 PathProgramCache]: Analyzing trace with hash 823087898, now seen corresponding path program 8 times [2024-06-03 20:01:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:55,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369927456] [2024-06-03 20:01:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:55,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:56,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369927456] [2024-06-03 20:01:56,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369927456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:56,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:56,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:01:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891965779] [2024-06-03 20:01:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:01:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:01:56,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:01:56,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:56,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 161 transitions, 1421 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) [2024-06-03 20:01:56,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:56,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:56,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:56,809 INFO L124 PetriNetUnfolderBase]: 467/863 cut-off events. [2024-06-03 20:01:56,810 INFO L125 PetriNetUnfolderBase]: For 80261/80261 co-relation queries the response was YES. [2024-06-03 20:01:56,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5636 conditions, 863 events. 467/863 cut-off events. For 80261/80261 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4243 event pairs, 87 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5527. Up to 755 conditions per place. [2024-06-03 20:01:56,815 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 26 changer transitions 0/179 dead transitions. [2024-06-03 20:01:56,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 179 transitions, 1861 flow [2024-06-03 20:01:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 20:01:56,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 20:01:56,816 INFO L175 Difference]: Start difference. First operand has 219 places, 161 transitions, 1421 flow. Second operand 10 states and 103 transitions. [2024-06-03 20:01:56,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 179 transitions, 1861 flow [2024-06-03 20:01:57,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 179 transitions, 1819 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:01:57,025 INFO L231 Difference]: Finished difference. Result has 216 places, 162 transitions, 1479 flow [2024-06-03 20:01:57,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1479, PETRI_PLACES=216, PETRI_TRANSITIONS=162} [2024-06-03 20:01:57,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-03 20:01:57,026 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 162 transitions, 1479 flow [2024-06-03 20:01:57,026 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) [2024-06-03 20:01:57,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:57,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 20:01:57,026 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)] === [2024-06-03 20:01:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash 993910298, now seen corresponding path program 9 times [2024-06-03 20:01:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:57,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093647318] [2024-06-03 20:01:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:57,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093647318] [2024-06-03 20:01:57,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093647318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:57,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:57,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:57,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709882690] [2024-06-03 20:01:57,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:57,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:57,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:57,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:57,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 162 transitions, 1479 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) [2024-06-03 20:01:57,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:57,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:57,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:58,232 INFO L124 PetriNetUnfolderBase]: 464/858 cut-off events. [2024-06-03 20:01:58,233 INFO L125 PetriNetUnfolderBase]: For 72382/72382 co-relation queries the response was YES. [2024-06-03 20:01:58,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5441 conditions, 858 events. 464/858 cut-off events. For 72382/72382 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4229 event pairs, 90 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 5333. Up to 790 conditions per place. [2024-06-03 20:01:58,238 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2024-06-03 20:01:58,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 180 transitions, 1929 flow [2024-06-03 20:01:58,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 20:01:58,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 20:01:58,240 INFO L175 Difference]: Start difference. First operand has 216 places, 162 transitions, 1479 flow. Second operand 10 states and 103 transitions. [2024-06-03 20:01:58,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 180 transitions, 1929 flow [2024-06-03 20:01:58,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 180 transitions, 1839 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:58,445 INFO L231 Difference]: Finished difference. Result has 218 places, 163 transitions, 1479 flow [2024-06-03 20:01:58,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1479, PETRI_PLACES=218, PETRI_TRANSITIONS=163} [2024-06-03 20:01:58,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-03 20:01:58,446 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 163 transitions, 1479 flow [2024-06-03 20:01:58,446 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) [2024-06-03 20:01:58,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:58,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:58,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 20:01:58,446 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)] === [2024-06-03 20:01:58,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash 993905648, now seen corresponding path program 10 times [2024-06-03 20:01:58,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:58,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082176734] [2024-06-03 20:01:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:58,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082176734] [2024-06-03 20:01:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082176734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:59,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:59,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214190355] [2024-06-03 20:01:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:59,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:59,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:59,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:01:59,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 163 transitions, 1479 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) [2024-06-03 20:01:59,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:59,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:01:59,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:59,658 INFO L124 PetriNetUnfolderBase]: 468/866 cut-off events. [2024-06-03 20:01:59,658 INFO L125 PetriNetUnfolderBase]: For 74409/74409 co-relation queries the response was YES. [2024-06-03 20:01:59,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5486 conditions, 866 events. 468/866 cut-off events. For 74409/74409 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4274 event pairs, 90 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 5377. Up to 778 conditions per place. [2024-06-03 20:01:59,664 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 22 changer transitions 0/181 dead transitions. [2024-06-03 20:01:59,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 181 transitions, 1931 flow [2024-06-03 20:01:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 20:01:59,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-03 20:01:59,665 INFO L175 Difference]: Start difference. First operand has 218 places, 163 transitions, 1479 flow. Second operand 10 states and 104 transitions. [2024-06-03 20:01:59,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 181 transitions, 1931 flow [2024-06-03 20:01:59,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 181 transitions, 1851 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:59,869 INFO L231 Difference]: Finished difference. Result has 220 places, 164 transitions, 1495 flow [2024-06-03 20:01:59,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1495, PETRI_PLACES=220, PETRI_TRANSITIONS=164} [2024-06-03 20:01:59,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-03 20:01:59,869 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 164 transitions, 1495 flow [2024-06-03 20:01:59,869 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) [2024-06-03 20:01:59,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:59,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:59,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 20:01:59,869 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)] === [2024-06-03 20:01:59,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash 907165582, now seen corresponding path program 4 times [2024-06-03 20:01:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061403194] [2024-06-03 20:01:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:00,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:00,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061403194] [2024-06-03 20:02:00,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061403194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:00,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:00,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:00,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014984913] [2024-06-03 20:02:00,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:00,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:00,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:00,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 164 transitions, 1495 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) [2024-06-03 20:02:00,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:00,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:00,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:01,495 INFO L124 PetriNetUnfolderBase]: 484/902 cut-off events. [2024-06-03 20:02:01,496 INFO L125 PetriNetUnfolderBase]: For 99191/99191 co-relation queries the response was YES. [2024-06-03 20:02:01,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 902 events. 484/902 cut-off events. For 99191/99191 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4530 event pairs, 88 based on Foata normal form. 10/911 useless extension candidates. Maximal degree in co-relation 5463. Up to 677 conditions per place. [2024-06-03 20:02:01,503 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 34 changer transitions 16/187 dead transitions. [2024-06-03 20:02:01,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 187 transitions, 1955 flow [2024-06-03 20:02:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 20:02:01,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-03 20:02:01,504 INFO L175 Difference]: Start difference. First operand has 220 places, 164 transitions, 1495 flow. Second operand 11 states and 123 transitions. [2024-06-03 20:02:01,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 187 transitions, 1955 flow [2024-06-03 20:02:01,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 187 transitions, 1869 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:01,703 INFO L231 Difference]: Finished difference. Result has 223 places, 158 transitions, 1444 flow [2024-06-03 20:02:01,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1444, PETRI_PLACES=223, PETRI_TRANSITIONS=158} [2024-06-03 20:02:01,703 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-03 20:02:01,703 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 158 transitions, 1444 flow [2024-06-03 20:02:01,703 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) [2024-06-03 20:02:01,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:01,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:01,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 20:02:01,704 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)] === [2024-06-03 20:02:01,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash 994090222, now seen corresponding path program 5 times [2024-06-03 20:02:01,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:01,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052908479] [2024-06-03 20:02:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052908479] [2024-06-03 20:02:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052908479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:02,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:02,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798087151] [2024-06-03 20:02:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:02,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:02,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:02,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:02,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:02,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:02,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 158 transitions, 1444 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) [2024-06-03 20:02:02,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:02,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:02,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:03,025 INFO L124 PetriNetUnfolderBase]: 450/844 cut-off events. [2024-06-03 20:02:03,025 INFO L125 PetriNetUnfolderBase]: For 88844/88844 co-relation queries the response was YES. [2024-06-03 20:02:03,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 844 events. 450/844 cut-off events. For 88844/88844 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4156 event pairs, 86 based on Foata normal form. 10/853 useless extension candidates. Maximal degree in co-relation 4877. Up to 730 conditions per place. [2024-06-03 20:02:03,031 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 14 changer transitions 16/180 dead transitions. [2024-06-03 20:02:03,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 180 transitions, 1888 flow [2024-06-03 20:02:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-03 20:02:03,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-03 20:02:03,032 INFO L175 Difference]: Start difference. First operand has 223 places, 158 transitions, 1444 flow. Second operand 11 states and 113 transitions. [2024-06-03 20:02:03,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 180 transitions, 1888 flow [2024-06-03 20:02:03,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 180 transitions, 1808 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:03,189 INFO L231 Difference]: Finished difference. Result has 217 places, 152 transitions, 1347 flow [2024-06-03 20:02:03,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1347, PETRI_PLACES=217, PETRI_TRANSITIONS=152} [2024-06-03 20:02:03,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-03 20:02:03,189 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 152 transitions, 1347 flow [2024-06-03 20:02:03,189 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) [2024-06-03 20:02:03,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:03,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:03,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 20:02:03,189 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)] === [2024-06-03 20:02:03,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1212680260, now seen corresponding path program 11 times [2024-06-03 20:02:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414408524] [2024-06-03 20:02:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:04,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414408524] [2024-06-03 20:02:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414408524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:04,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:04,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:04,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486106021] [2024-06-03 20:02:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:04,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:04,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:04,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 152 transitions, 1347 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) [2024-06-03 20:02:04,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:04,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:04,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:04,526 INFO L124 PetriNetUnfolderBase]: 418/785 cut-off events. [2024-06-03 20:02:04,527 INFO L125 PetriNetUnfolderBase]: For 60378/60384 co-relation queries the response was YES. [2024-06-03 20:02:04,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4704 conditions, 785 events. 418/785 cut-off events. For 60378/60384 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3784 event pairs, 79 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4596. Up to 459 conditions per place. [2024-06-03 20:02:04,532 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 81 changer transitions 0/169 dead transitions. [2024-06-03 20:02:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 169 transitions, 1771 flow [2024-06-03 20:02:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 20:02:04,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-03 20:02:04,533 INFO L175 Difference]: Start difference. First operand has 217 places, 152 transitions, 1347 flow. Second operand 10 states and 115 transitions. [2024-06-03 20:02:04,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 169 transitions, 1771 flow [2024-06-03 20:02:04,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 169 transitions, 1731 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:04,674 INFO L231 Difference]: Finished difference. Result has 210 places, 153 transitions, 1519 flow [2024-06-03 20:02:04,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=210, PETRI_TRANSITIONS=153} [2024-06-03 20:02:04,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-03 20:02:04,675 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 153 transitions, 1519 flow [2024-06-03 20:02:04,675 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) [2024-06-03 20:02:04,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:04,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:04,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 20:02:04,675 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)] === [2024-06-03 20:02:04,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:04,675 INFO L85 PathProgramCache]: Analyzing trace with hash -859525188, now seen corresponding path program 12 times [2024-06-03 20:02:04,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:04,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133377735] [2024-06-03 20:02:04,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:04,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:05,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133377735] [2024-06-03 20:02:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133377735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:05,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:05,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088103786] [2024-06-03 20:02:05,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:05,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:05,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:05,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:05,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:05,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 153 transitions, 1519 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) [2024-06-03 20:02:05,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:05,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:05,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:06,101 INFO L124 PetriNetUnfolderBase]: 422/793 cut-off events. [2024-06-03 20:02:06,101 INFO L125 PetriNetUnfolderBase]: For 56996/57002 co-relation queries the response was YES. [2024-06-03 20:02:06,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 793 events. 422/793 cut-off events. For 56996/57002 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3842 event pairs, 79 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 4809. Up to 453 conditions per place. [2024-06-03 20:02:06,107 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 82 changer transitions 0/170 dead transitions. [2024-06-03 20:02:06,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 170 transitions, 1943 flow [2024-06-03 20:02:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:02:06,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-03 20:02:06,108 INFO L175 Difference]: Start difference. First operand has 210 places, 153 transitions, 1519 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:02:06,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 170 transitions, 1943 flow [2024-06-03 20:02:06,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 170 transitions, 1743 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:06,253 INFO L231 Difference]: Finished difference. Result has 212 places, 154 transitions, 1533 flow [2024-06-03 20:02:06,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1533, PETRI_PLACES=212, PETRI_TRANSITIONS=154} [2024-06-03 20:02:06,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-03 20:02:06,254 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 154 transitions, 1533 flow [2024-06-03 20:02:06,254 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) [2024-06-03 20:02:06,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:06,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:06,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 20:02:06,254 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)] === [2024-06-03 20:02:06,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1093274264, now seen corresponding path program 6 times [2024-06-03 20:02:06,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:06,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374689616] [2024-06-03 20:02:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:07,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:07,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374689616] [2024-06-03 20:02:07,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374689616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:07,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:07,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:07,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928710145] [2024-06-03 20:02:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:07,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:07,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:07,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:07,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:07,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 154 transitions, 1533 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) [2024-06-03 20:02:07,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:07,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:07,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:07,675 INFO L124 PetriNetUnfolderBase]: 438/829 cut-off events. [2024-06-03 20:02:07,675 INFO L125 PetriNetUnfolderBase]: For 79292/79298 co-relation queries the response was YES. [2024-06-03 20:02:07,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4997 conditions, 829 events. 438/829 cut-off events. For 79292/79298 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4089 event pairs, 87 based on Foata normal form. 10/834 useless extension candidates. Maximal degree in co-relation 4891. Up to 658 conditions per place. [2024-06-03 20:02:07,681 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 31 changer transitions 7/173 dead transitions. [2024-06-03 20:02:07,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 173 transitions, 1953 flow [2024-06-03 20:02:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:02:07,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-03 20:02:07,683 INFO L175 Difference]: Start difference. First operand has 212 places, 154 transitions, 1533 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:02:07,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 173 transitions, 1953 flow [2024-06-03 20:02:07,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 173 transitions, 1749 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:07,832 INFO L231 Difference]: Finished difference. Result has 214 places, 151 transitions, 1375 flow [2024-06-03 20:02:07,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1375, PETRI_PLACES=214, PETRI_TRANSITIONS=151} [2024-06-03 20:02:07,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-03 20:02:07,832 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 151 transitions, 1375 flow [2024-06-03 20:02:07,832 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) [2024-06-03 20:02:07,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:07,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:07,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 20:02:07,833 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)] === [2024-06-03 20:02:07,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1265757210, now seen corresponding path program 13 times [2024-06-03 20:02:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:07,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995531796] [2024-06-03 20:02:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:07,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:08,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:08,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995531796] [2024-06-03 20:02:08,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995531796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:08,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:08,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:08,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867924154] [2024-06-03 20:02:08,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:08,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:08,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:08,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:08,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:08,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 151 transitions, 1375 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) [2024-06-03 20:02:08,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:08,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:08,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:08,987 INFO L124 PetriNetUnfolderBase]: 432/823 cut-off events. [2024-06-03 20:02:08,987 INFO L125 PetriNetUnfolderBase]: For 86876/86882 co-relation queries the response was YES. [2024-06-03 20:02:08,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 823 events. 432/823 cut-off events. For 86876/86882 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4088 event pairs, 83 based on Foata normal form. 16/836 useless extension candidates. Maximal degree in co-relation 4753. Up to 689 conditions per place. [2024-06-03 20:02:08,993 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 26 changer transitions 7/171 dead transitions. [2024-06-03 20:02:08,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 171 transitions, 1839 flow [2024-06-03 20:02:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 20:02:08,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 20:02:08,994 INFO L175 Difference]: Start difference. First operand has 214 places, 151 transitions, 1375 flow. Second operand 10 states and 108 transitions. [2024-06-03 20:02:08,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 171 transitions, 1839 flow [2024-06-03 20:02:09,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 171 transitions, 1697 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-03 20:02:09,137 INFO L231 Difference]: Finished difference. Result has 210 places, 149 transitions, 1316 flow [2024-06-03 20:02:09,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1316, PETRI_PLACES=210, PETRI_TRANSITIONS=149} [2024-06-03 20:02:09,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-03 20:02:09,138 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 149 transitions, 1316 flow [2024-06-03 20:02:09,138 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) [2024-06-03 20:02:09,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:09,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:09,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 20:02:09,138 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)] === [2024-06-03 20:02:09,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:09,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1035541796, now seen corresponding path program 7 times [2024-06-03 20:02:09,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:09,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762991635] [2024-06-03 20:02:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:09,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762991635] [2024-06-03 20:02:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762991635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:10,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:10,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794253485] [2024-06-03 20:02:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:10,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:10,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:10,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:10,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:10,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 149 transitions, 1316 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) [2024-06-03 20:02:10,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:10,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:10,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:10,476 INFO L124 PetriNetUnfolderBase]: 424/811 cut-off events. [2024-06-03 20:02:10,476 INFO L125 PetriNetUnfolderBase]: For 79012/79018 co-relation queries the response was YES. [2024-06-03 20:02:10,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 811 events. 424/811 cut-off events. For 79012/79018 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4029 event pairs, 85 based on Foata normal form. 14/822 useless extension candidates. Maximal degree in co-relation 4563. Up to 679 conditions per place. [2024-06-03 20:02:10,482 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 20 changer transitions 16/170 dead transitions. [2024-06-03 20:02:10,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 170 transitions, 1736 flow [2024-06-03 20:02:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 20:02:10,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 20:02:10,483 INFO L175 Difference]: Start difference. First operand has 210 places, 149 transitions, 1316 flow. Second operand 11 states and 116 transitions. [2024-06-03 20:02:10,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 170 transitions, 1736 flow [2024-06-03 20:02:10,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 170 transitions, 1614 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:10,632 INFO L231 Difference]: Finished difference. Result has 211 places, 143 transitions, 1196 flow [2024-06-03 20:02:10,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1196, PETRI_PLACES=211, PETRI_TRANSITIONS=143} [2024-06-03 20:02:10,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-03 20:02:10,633 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 143 transitions, 1196 flow [2024-06-03 20:02:10,633 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) [2024-06-03 20:02:10,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:10,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:10,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 20:02:10,633 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)] === [2024-06-03 20:02:10,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1035302786, now seen corresponding path program 8 times [2024-06-03 20:02:10,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427366384] [2024-06-03 20:02:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:11,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:11,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427366384] [2024-06-03 20:02:11,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427366384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:11,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:11,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:11,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274756279] [2024-06-03 20:02:11,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:11,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:11,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:11,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:11,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 143 transitions, 1196 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) [2024-06-03 20:02:11,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:11,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:11,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:11,823 INFO L124 PetriNetUnfolderBase]: 438/845 cut-off events. [2024-06-03 20:02:11,824 INFO L125 PetriNetUnfolderBase]: For 108610/108616 co-relation queries the response was YES. [2024-06-03 20:02:11,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 845 events. 438/845 cut-off events. For 108610/108616 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4216 event pairs, 95 based on Foata normal form. 12/854 useless extension candidates. Maximal degree in co-relation 5561. Up to 661 conditions per place. [2024-06-03 20:02:11,830 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 138 selfloop transitions, 18 changer transitions 9/167 dead transitions. [2024-06-03 20:02:11,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 167 transitions, 1828 flow [2024-06-03 20:02:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:02:11,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-03 20:02:11,831 INFO L175 Difference]: Start difference. First operand has 211 places, 143 transitions, 1196 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:02:11,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 167 transitions, 1828 flow [2024-06-03 20:02:12,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 167 transitions, 1768 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:12,014 INFO L231 Difference]: Finished difference. Result has 204 places, 139 transitions, 1161 flow [2024-06-03 20:02:12,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=204, PETRI_TRANSITIONS=139} [2024-06-03 20:02:12,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-03 20:02:12,014 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 139 transitions, 1161 flow [2024-06-03 20:02:12,015 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) [2024-06-03 20:02:12,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:12,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:12,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 20:02:12,015 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)] === [2024-06-03 20:02:12,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1212800230, now seen corresponding path program 14 times [2024-06-03 20:02:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497474145] [2024-06-03 20:02:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:12,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:12,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497474145] [2024-06-03 20:02:12,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497474145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:12,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:12,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:12,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306504214] [2024-06-03 20:02:12,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:13,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:13,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 139 transitions, 1161 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) [2024-06-03 20:02:13,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:13,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:13,309 INFO L124 PetriNetUnfolderBase]: 422/809 cut-off events. [2024-06-03 20:02:13,309 INFO L125 PetriNetUnfolderBase]: For 85966/85972 co-relation queries the response was YES. [2024-06-03 20:02:13,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 809 events. 422/809 cut-off events. For 85966/85972 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3963 event pairs, 101 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 5409. Up to 688 conditions per place. [2024-06-03 20:02:13,314 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2024-06-03 20:02:13,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 155 transitions, 1551 flow [2024-06-03 20:02:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 20:02:13,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-03 20:02:13,315 INFO L175 Difference]: Start difference. First operand has 204 places, 139 transitions, 1161 flow. Second operand 10 states and 102 transitions. [2024-06-03 20:02:13,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 155 transitions, 1551 flow [2024-06-03 20:02:13,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 155 transitions, 1506 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:13,479 INFO L231 Difference]: Finished difference. Result has 199 places, 140 transitions, 1228 flow [2024-06-03 20:02:13,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1228, PETRI_PLACES=199, PETRI_TRANSITIONS=140} [2024-06-03 20:02:13,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-03 20:02:13,480 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 140 transitions, 1228 flow [2024-06-03 20:02:13,480 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) [2024-06-03 20:02:13,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:13,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:13,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 20:02:13,480 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)] === [2024-06-03 20:02:13,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1466925040, now seen corresponding path program 15 times [2024-06-03 20:02:13,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:13,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113005119] [2024-06-03 20:02:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:13,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:14,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:14,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113005119] [2024-06-03 20:02:14,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113005119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:14,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:14,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077707756] [2024-06-03 20:02:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:14,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:14,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:14,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:14,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 140 transitions, 1228 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) [2024-06-03 20:02:14,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:14,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:14,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:14,994 INFO L124 PetriNetUnfolderBase]: 419/804 cut-off events. [2024-06-03 20:02:14,994 INFO L125 PetriNetUnfolderBase]: For 74669/74675 co-relation queries the response was YES. [2024-06-03 20:02:14,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 804 events. 419/804 cut-off events. For 74669/74675 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3937 event pairs, 98 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 5169. Up to 738 conditions per place. [2024-06-03 20:02:14,999 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-06-03 20:02:14,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 156 transitions, 1626 flow [2024-06-03 20:02:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 20:02:15,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-03 20:02:15,000 INFO L175 Difference]: Start difference. First operand has 199 places, 140 transitions, 1228 flow. Second operand 10 states and 101 transitions. [2024-06-03 20:02:15,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 156 transitions, 1626 flow [2024-06-03 20:02:15,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 156 transitions, 1526 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:15,163 INFO L231 Difference]: Finished difference. Result has 201 places, 141 transitions, 1222 flow [2024-06-03 20:02:15,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1222, PETRI_PLACES=201, PETRI_TRANSITIONS=141} [2024-06-03 20:02:15,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-03 20:02:15,164 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 141 transitions, 1222 flow [2024-06-03 20:02:15,164 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) [2024-06-03 20:02:15,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:15,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:15,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 20:02:15,164 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)] === [2024-06-03 20:02:15,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1065875686, now seen corresponding path program 16 times [2024-06-03 20:02:15,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:15,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136929725] [2024-06-03 20:02:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:16,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:16,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136929725] [2024-06-03 20:02:16,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136929725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:16,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:16,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887790716] [2024-06-03 20:02:16,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:16,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:16,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:16,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:16,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:16,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:16,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 141 transitions, 1222 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) [2024-06-03 20:02:16,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:16,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:16,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:16,398 INFO L124 PetriNetUnfolderBase]: 439/848 cut-off events. [2024-06-03 20:02:16,398 INFO L125 PetriNetUnfolderBase]: For 100816/100822 co-relation queries the response was YES. [2024-06-03 20:02:16,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 848 events. 439/848 cut-off events. For 100816/100822 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4254 event pairs, 104 based on Foata normal form. 16/861 useless extension candidates. Maximal degree in co-relation 5335. Up to 631 conditions per place. [2024-06-03 20:02:16,404 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 42 changer transitions 7/162 dead transitions. [2024-06-03 20:02:16,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 162 transitions, 1672 flow [2024-06-03 20:02:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 20:02:16,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-03 20:02:16,405 INFO L175 Difference]: Start difference. First operand has 201 places, 141 transitions, 1222 flow. Second operand 10 states and 115 transitions. [2024-06-03 20:02:16,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 162 transitions, 1672 flow [2024-06-03 20:02:16,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 162 transitions, 1588 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:16,569 INFO L231 Difference]: Finished difference. Result has 203 places, 139 transitions, 1254 flow [2024-06-03 20:02:16,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1254, PETRI_PLACES=203, PETRI_TRANSITIONS=139} [2024-06-03 20:02:16,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-03 20:02:16,570 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 139 transitions, 1254 flow [2024-06-03 20:02:16,570 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) [2024-06-03 20:02:16,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:16,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:16,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 20:02:16,570 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)] === [2024-06-03 20:02:16,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:16,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1041982480, now seen corresponding path program 17 times [2024-06-03 20:02:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494332158] [2024-06-03 20:02:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:16,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:17,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494332158] [2024-06-03 20:02:17,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494332158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:17,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:17,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:17,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140291680] [2024-06-03 20:02:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:17,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:17,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:17,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:17,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 139 transitions, 1254 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) [2024-06-03 20:02:17,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:17,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:17,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:17,937 INFO L124 PetriNetUnfolderBase]: 419/808 cut-off events. [2024-06-03 20:02:17,937 INFO L125 PetriNetUnfolderBase]: For 79298/79304 co-relation queries the response was YES. [2024-06-03 20:02:17,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5370 conditions, 808 events. 419/808 cut-off events. For 79298/79304 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3995 event pairs, 102 based on Foata normal form. 6/811 useless extension candidates. Maximal degree in co-relation 5269. Up to 728 conditions per place. [2024-06-03 20:02:17,943 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-03 20:02:17,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 155 transitions, 1652 flow [2024-06-03 20:02:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 20:02:17,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-03 20:02:17,944 INFO L175 Difference]: Start difference. First operand has 203 places, 139 transitions, 1254 flow. Second operand 10 states and 102 transitions. [2024-06-03 20:02:17,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 155 transitions, 1652 flow [2024-06-03 20:02:18,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 155 transitions, 1521 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:18,108 INFO L231 Difference]: Finished difference. Result has 204 places, 140 transitions, 1223 flow [2024-06-03 20:02:18,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1223, PETRI_PLACES=204, PETRI_TRANSITIONS=140} [2024-06-03 20:02:18,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-03 20:02:18,109 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 140 transitions, 1223 flow [2024-06-03 20:02:18,109 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) [2024-06-03 20:02:18,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:18,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:18,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 20:02:18,109 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)] === [2024-06-03 20:02:18,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1072304776, now seen corresponding path program 18 times [2024-06-03 20:02:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:18,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385527427] [2024-06-03 20:02:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:18,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:18,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385527427] [2024-06-03 20:02:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385527427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:18,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:18,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:18,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427552559] [2024-06-03 20:02:18,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:18,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:18,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:18,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:19,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:19,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 140 transitions, 1223 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) [2024-06-03 20:02:19,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:19,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:19,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:19,278 INFO L124 PetriNetUnfolderBase]: 423/816 cut-off events. [2024-06-03 20:02:19,278 INFO L125 PetriNetUnfolderBase]: For 81570/81576 co-relation queries the response was YES. [2024-06-03 20:02:19,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 816 events. 423/816 cut-off events. For 81570/81576 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4048 event pairs, 100 based on Foata normal form. 6/819 useless extension candidates. Maximal degree in co-relation 5285. Up to 647 conditions per place. [2024-06-03 20:02:19,284 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 47 changer transitions 0/157 dead transitions. [2024-06-03 20:02:19,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 157 transitions, 1633 flow [2024-06-03 20:02:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 20:02:19,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 20:02:19,285 INFO L175 Difference]: Start difference. First operand has 204 places, 140 transitions, 1223 flow. Second operand 10 states and 110 transitions. [2024-06-03 20:02:19,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 157 transitions, 1633 flow [2024-06-03 20:02:19,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 157 transitions, 1543 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:19,476 INFO L231 Difference]: Finished difference. Result has 206 places, 141 transitions, 1285 flow [2024-06-03 20:02:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1285, PETRI_PLACES=206, PETRI_TRANSITIONS=141} [2024-06-03 20:02:19,477 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-03 20:02:19,477 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 141 transitions, 1285 flow [2024-06-03 20:02:19,477 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) [2024-06-03 20:02:19,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:19,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:19,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 20:02:19,477 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)] === [2024-06-03 20:02:19,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1466745116, now seen corresponding path program 9 times [2024-06-03 20:02:19,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:19,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394518445] [2024-06-03 20:02:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:19,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:20,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394518445] [2024-06-03 20:02:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394518445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:20,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703100529] [2024-06-03 20:02:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:20,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:20,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 141 transitions, 1285 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) [2024-06-03 20:02:20,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:20,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:20,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:20,908 INFO L124 PetriNetUnfolderBase]: 425/826 cut-off events. [2024-06-03 20:02:20,908 INFO L125 PetriNetUnfolderBase]: For 93443/93449 co-relation queries the response was YES. [2024-06-03 20:02:20,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5114 conditions, 826 events. 425/826 cut-off events. For 93443/93449 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4133 event pairs, 102 based on Foata normal form. 14/837 useless extension candidates. Maximal degree in co-relation 5011. Up to 718 conditions per place. [2024-06-03 20:02:20,914 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 18 changer transitions 9/161 dead transitions. [2024-06-03 20:02:20,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 161 transitions, 1683 flow [2024-06-03 20:02:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:20,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-03 20:02:20,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-03 20:02:20,915 INFO L175 Difference]: Start difference. First operand has 206 places, 141 transitions, 1285 flow. Second operand 11 states and 111 transitions. [2024-06-03 20:02:20,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 161 transitions, 1683 flow [2024-06-03 20:02:21,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 161 transitions, 1541 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:21,089 INFO L231 Difference]: Finished difference. Result has 209 places, 138 transitions, 1161 flow [2024-06-03 20:02:21,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1161, PETRI_PLACES=209, PETRI_TRANSITIONS=138} [2024-06-03 20:02:21,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-03 20:02:21,089 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 138 transitions, 1161 flow [2024-06-03 20:02:21,089 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) [2024-06-03 20:02:21,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:21,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:21,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 20:02:21,090 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)] === [2024-06-03 20:02:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1072309426, now seen corresponding path program 19 times [2024-06-03 20:02:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509595780] [2024-06-03 20:02:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:21,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:21,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509595780] [2024-06-03 20:02:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509595780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:21,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:21,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:21,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267494677] [2024-06-03 20:02:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:21,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:21,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:22,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:22,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 138 transitions, 1161 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) [2024-06-03 20:02:22,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:22,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:22,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:22,284 INFO L124 PetriNetUnfolderBase]: 432/843 cut-off events. [2024-06-03 20:02:22,284 INFO L125 PetriNetUnfolderBase]: For 101156/101162 co-relation queries the response was YES. [2024-06-03 20:02:22,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5835 conditions, 843 events. 432/843 cut-off events. For 101156/101162 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4234 event pairs, 107 based on Foata normal form. 6/846 useless extension candidates. Maximal degree in co-relation 5731. Up to 588 conditions per place. [2024-06-03 20:02:22,291 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 48 changer transitions 0/160 dead transitions. [2024-06-03 20:02:22,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 160 transitions, 1761 flow [2024-06-03 20:02:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 20:02:22,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-03 20:02:22,292 INFO L175 Difference]: Start difference. First operand has 209 places, 138 transitions, 1161 flow. Second operand 10 states and 115 transitions. [2024-06-03 20:02:22,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 160 transitions, 1761 flow [2024-06-03 20:02:22,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 160 transitions, 1715 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:22,479 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 1273 flow [2024-06-03 20:02:22,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1273, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2024-06-03 20:02:22,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-03 20:02:22,480 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 1273 flow [2024-06-03 20:02:22,480 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) [2024-06-03 20:02:22,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:22,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:22,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 20:02:22,480 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)] === [2024-06-03 20:02:22,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1035011350, now seen corresponding path program 10 times [2024-06-03 20:02:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:22,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169773493] [2024-06-03 20:02:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:23,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169773493] [2024-06-03 20:02:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169773493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320239893] [2024-06-03 20:02:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:23,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:23,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:23,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:23,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 1273 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) [2024-06-03 20:02:23,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:23,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:23,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:23,684 INFO L124 PetriNetUnfolderBase]: 473/930 cut-off events. [2024-06-03 20:02:23,685 INFO L125 PetriNetUnfolderBase]: For 140575/140581 co-relation queries the response was YES. [2024-06-03 20:02:23,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6904 conditions, 930 events. 473/930 cut-off events. For 140575/140581 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4851 event pairs, 128 based on Foata normal form. 12/939 useless extension candidates. Maximal degree in co-relation 6801. Up to 646 conditions per place. [2024-06-03 20:02:23,692 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 36 changer transitions 8/163 dead transitions. [2024-06-03 20:02:23,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 163 transitions, 1849 flow [2024-06-03 20:02:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 20:02:23,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-03 20:02:23,693 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 1273 flow. Second operand 10 states and 117 transitions. [2024-06-03 20:02:23,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 163 transitions, 1849 flow [2024-06-03 20:02:23,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 163 transitions, 1655 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:23,925 INFO L231 Difference]: Finished difference. Result has 204 places, 136 transitions, 1138 flow [2024-06-03 20:02:23,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1138, PETRI_PLACES=204, PETRI_TRANSITIONS=136} [2024-06-03 20:02:23,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-03 20:02:23,925 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 136 transitions, 1138 flow [2024-06-03 20:02:23,926 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) [2024-06-03 20:02:23,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:23,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:23,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 20:02:23,926 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)] === [2024-06-03 20:02:23,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1034772340, now seen corresponding path program 11 times [2024-06-03 20:02:23,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:23,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919498516] [2024-06-03 20:02:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:23,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:25,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:25,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919498516] [2024-06-03 20:02:25,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919498516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:25,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:25,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204525155] [2024-06-03 20:02:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:25,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:25,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:25,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:25,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:25,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 136 transitions, 1138 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) [2024-06-03 20:02:25,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:25,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:25,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:25,491 INFO L124 PetriNetUnfolderBase]: 470/925 cut-off events. [2024-06-03 20:02:25,491 INFO L125 PetriNetUnfolderBase]: For 147944/147950 co-relation queries the response was YES. [2024-06-03 20:02:25,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 925 events. 470/925 cut-off events. For 147944/147950 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4819 event pairs, 136 based on Foata normal form. 14/936 useless extension candidates. Maximal degree in co-relation 6583. Up to 758 conditions per place. [2024-06-03 20:02:25,498 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 30 changer transitions 9/158 dead transitions. [2024-06-03 20:02:25,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 158 transitions, 1538 flow [2024-06-03 20:02:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 20:02:25,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-03 20:02:25,501 INFO L175 Difference]: Start difference. First operand has 204 places, 136 transitions, 1138 flow. Second operand 11 states and 120 transitions. [2024-06-03 20:02:25,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 158 transitions, 1538 flow [2024-06-03 20:02:25,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 158 transitions, 1468 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:25,733 INFO L231 Difference]: Finished difference. Result has 203 places, 133 transitions, 1110 flow [2024-06-03 20:02:25,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1110, PETRI_PLACES=203, PETRI_TRANSITIONS=133} [2024-06-03 20:02:25,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-03 20:02:25,734 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 133 transitions, 1110 flow [2024-06-03 20:02:25,734 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) [2024-06-03 20:02:25,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:25,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 20:02:25,734 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)] === [2024-06-03 20:02:25,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:25,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1072124852, now seen corresponding path program 12 times [2024-06-03 20:02:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:25,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886796000] [2024-06-03 20:02:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:26,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886796000] [2024-06-03 20:02:26,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886796000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:26,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:26,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:26,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82416459] [2024-06-03 20:02:26,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:26,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:26,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:26,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 133 transitions, 1110 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) [2024-06-03 20:02:26,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:26,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:26,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:26,978 INFO L124 PetriNetUnfolderBase]: 446/885 cut-off events. [2024-06-03 20:02:26,979 INFO L125 PetriNetUnfolderBase]: For 133731/133737 co-relation queries the response was YES. [2024-06-03 20:02:26,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 885 events. 446/885 cut-off events. For 133731/133737 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4594 event pairs, 128 based on Foata normal form. 14/896 useless extension candidates. Maximal degree in co-relation 6075. Up to 689 conditions per place. [2024-06-03 20:02:26,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 35 changer transitions 16/155 dead transitions. [2024-06-03 20:02:26,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 155 transitions, 1504 flow [2024-06-03 20:02:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 20:02:26,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-03 20:02:26,986 INFO L175 Difference]: Start difference. First operand has 203 places, 133 transitions, 1110 flow. Second operand 11 states and 123 transitions. [2024-06-03 20:02:26,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 155 transitions, 1504 flow [2024-06-03 20:02:27,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 155 transitions, 1438 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:27,193 INFO L231 Difference]: Finished difference. Result has 201 places, 127 transitions, 1073 flow [2024-06-03 20:02:27,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1073, PETRI_PLACES=201, PETRI_TRANSITIONS=127} [2024-06-03 20:02:27,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-03 20:02:27,194 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 127 transitions, 1073 flow [2024-06-03 20:02:27,194 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) [2024-06-03 20:02:27,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:27,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:27,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 20:02:27,194 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)] === [2024-06-03 20:02:27,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1418948644, now seen corresponding path program 13 times [2024-06-03 20:02:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:27,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236169229] [2024-06-03 20:02:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:27,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:28,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:28,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236169229] [2024-06-03 20:02:28,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236169229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:28,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:28,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:28,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747830972] [2024-06-03 20:02:28,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:28,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:28,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:28,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 127 transitions, 1073 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) [2024-06-03 20:02:28,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:28,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:28,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:28,432 INFO L124 PetriNetUnfolderBase]: 451/903 cut-off events. [2024-06-03 20:02:28,432 INFO L125 PetriNetUnfolderBase]: For 150326/150326 co-relation queries the response was YES. [2024-06-03 20:02:28,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6895 conditions, 903 events. 451/903 cut-off events. For 150326/150326 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4707 event pairs, 136 based on Foata normal form. 8/910 useless extension candidates. Maximal degree in co-relation 6798. Up to 663 conditions per place. [2024-06-03 20:02:28,439 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 16 changer transitions 8/148 dead transitions. [2024-06-03 20:02:28,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 148 transitions, 1603 flow [2024-06-03 20:02:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 20:02:28,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 20:02:28,439 INFO L175 Difference]: Start difference. First operand has 201 places, 127 transitions, 1073 flow. Second operand 10 states and 107 transitions. [2024-06-03 20:02:28,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 148 transitions, 1603 flow [2024-06-03 20:02:28,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 148 transitions, 1513 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:28,632 INFO L231 Difference]: Finished difference. Result has 194 places, 124 transitions, 1004 flow [2024-06-03 20:02:28,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1004, PETRI_PLACES=194, PETRI_TRANSITIONS=124} [2024-06-03 20:02:28,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-03 20:02:28,633 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 124 transitions, 1004 flow [2024-06-03 20:02:28,633 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) [2024-06-03 20:02:28,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:28,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:28,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 20:02:28,633 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)] === [2024-06-03 20:02:28,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1418957014, now seen corresponding path program 14 times [2024-06-03 20:02:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:28,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603108239] [2024-06-03 20:02:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:29,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:29,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603108239] [2024-06-03 20:02:29,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603108239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:29,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:29,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304036403] [2024-06-03 20:02:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:29,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:29,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:29,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:29,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:29,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 124 transitions, 1004 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) [2024-06-03 20:02:29,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:29,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:29,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:29,873 INFO L124 PetriNetUnfolderBase]: 415/835 cut-off events. [2024-06-03 20:02:29,873 INFO L125 PetriNetUnfolderBase]: For 119434/119434 co-relation queries the response was YES. [2024-06-03 20:02:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5601 conditions, 835 events. 415/835 cut-off events. For 119434/119434 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4286 event pairs, 128 based on Foata normal form. 12/846 useless extension candidates. Maximal degree in co-relation 5507. Up to 732 conditions per place. [2024-06-03 20:02:29,879 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 16 changer transitions 10/141 dead transitions. [2024-06-03 20:02:29,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 141 transitions, 1350 flow [2024-06-03 20:02:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 20:02:29,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 20:02:29,880 INFO L175 Difference]: Start difference. First operand has 194 places, 124 transitions, 1004 flow. Second operand 10 states and 105 transitions. [2024-06-03 20:02:29,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 141 transitions, 1350 flow [2024-06-03 20:02:30,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 141 transitions, 1285 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:30,074 INFO L231 Difference]: Finished difference. Result has 193 places, 118 transitions, 932 flow [2024-06-03 20:02:30,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=932, PETRI_PLACES=193, PETRI_TRANSITIONS=118} [2024-06-03 20:02:30,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-03 20:02:30,075 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 118 transitions, 932 flow [2024-06-03 20:02:30,075 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) [2024-06-03 20:02:30,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:30,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:30,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 20:02:30,075 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)] === [2024-06-03 20:02:30,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1408829314, now seen corresponding path program 15 times [2024-06-03 20:02:30,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:30,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329695417] [2024-06-03 20:02:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:30,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:30,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329695417] [2024-06-03 20:02:30,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329695417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:30,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:30,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452821735] [2024-06-03 20:02:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:30,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:30,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:30,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 118 transitions, 932 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) [2024-06-03 20:02:30,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:30,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:30,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:31,270 INFO L124 PetriNetUnfolderBase]: 392/794 cut-off events. [2024-06-03 20:02:31,270 INFO L125 PetriNetUnfolderBase]: For 101339/101339 co-relation queries the response was YES. [2024-06-03 20:02:31,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 794 events. 392/794 cut-off events. For 101339/101339 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4024 event pairs, 117 based on Foata normal form. 8/801 useless extension candidates. Maximal degree in co-relation 5135. Up to 632 conditions per place. [2024-06-03 20:02:31,278 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 116 selfloop transitions, 12 changer transitions 11/141 dead transitions. [2024-06-03 20:02:31,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 141 transitions, 1444 flow [2024-06-03 20:02:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 20:02:31,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-03 20:02:31,289 INFO L175 Difference]: Start difference. First operand has 193 places, 118 transitions, 932 flow. Second operand 11 states and 114 transitions. [2024-06-03 20:02:31,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 141 transitions, 1444 flow [2024-06-03 20:02:31,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 141 transitions, 1338 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-03 20:02:31,457 INFO L231 Difference]: Finished difference. Result has 187 places, 114 transitions, 833 flow [2024-06-03 20:02:31,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=833, PETRI_PLACES=187, PETRI_TRANSITIONS=114} [2024-06-03 20:02:31,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-03 20:02:31,458 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 114 transitions, 833 flow [2024-06-03 20:02:31,458 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) [2024-06-03 20:02:31,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:31,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:31,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 20:02:31,458 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)] === [2024-06-03 20:02:31,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:31,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1704287524, now seen corresponding path program 16 times [2024-06-03 20:02:31,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:31,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132807762] [2024-06-03 20:02:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:31,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:32,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:32,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132807762] [2024-06-03 20:02:32,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132807762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:32,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:32,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:32,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746382233] [2024-06-03 20:02:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:32,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:32,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:32,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 114 transitions, 833 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) [2024-06-03 20:02:32,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:32,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:32,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:33,059 INFO L124 PetriNetUnfolderBase]: 371/755 cut-off events. [2024-06-03 20:02:33,059 INFO L125 PetriNetUnfolderBase]: For 97101/97101 co-relation queries the response was YES. [2024-06-03 20:02:33,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 755 events. 371/755 cut-off events. For 97101/97101 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3766 event pairs, 117 based on Foata normal form. 10/764 useless extension candidates. Maximal degree in co-relation 4607. Up to 669 conditions per place. [2024-06-03 20:02:33,064 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 12 changer transitions 9/132 dead transitions. [2024-06-03 20:02:33,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 132 transitions, 1163 flow [2024-06-03 20:02:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-03 20:02:33,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-03 20:02:33,065 INFO L175 Difference]: Start difference. First operand has 187 places, 114 transitions, 833 flow. Second operand 11 states and 106 transitions. [2024-06-03 20:02:33,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 132 transitions, 1163 flow [2024-06-03 20:02:33,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 132 transitions, 1136 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:33,223 INFO L231 Difference]: Finished difference. Result has 183 places, 111 transitions, 813 flow [2024-06-03 20:02:33,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=813, PETRI_PLACES=183, PETRI_TRANSITIONS=111} [2024-06-03 20:02:33,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-03 20:02:33,223 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 111 transitions, 813 flow [2024-06-03 20:02:33,223 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) [2024-06-03 20:02:33,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:33,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:33,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 20:02:33,224 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)] === [2024-06-03 20:02:33,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1295675588, now seen corresponding path program 1 times [2024-06-03 20:02:33,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:33,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878461080] [2024-06-03 20:02:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:33,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:34,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:34,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878461080] [2024-06-03 20:02:34,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878461080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:34,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:34,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:02:34,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76652929] [2024-06-03 20:02:34,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:34,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:02:34,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:34,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:02:34,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:02:34,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:34,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 111 transitions, 813 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) [2024-06-03 20:02:34,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:34,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:34,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:34,837 INFO L124 PetriNetUnfolderBase]: 353/725 cut-off events. [2024-06-03 20:02:34,837 INFO L125 PetriNetUnfolderBase]: For 82979/82979 co-relation queries the response was YES. [2024-06-03 20:02:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4505 conditions, 725 events. 353/725 cut-off events. For 82979/82979 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3594 event pairs, 105 based on Foata normal form. 6/730 useless extension candidates. Maximal degree in co-relation 4415. Up to 600 conditions per place. [2024-06-03 20:02:34,841 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 13 changer transitions 21/134 dead transitions. [2024-06-03 20:02:34,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 134 transitions, 1141 flow [2024-06-03 20:02:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-03 20:02:34,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 20:02:34,841 INFO L175 Difference]: Start difference. First operand has 183 places, 111 transitions, 813 flow. Second operand 11 states and 110 transitions. [2024-06-03 20:02:34,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 134 transitions, 1141 flow [2024-06-03 20:02:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 134 transitions, 1107 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:35,009 INFO L231 Difference]: Finished difference. Result has 181 places, 105 transitions, 771 flow [2024-06-03 20:02:35,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=771, PETRI_PLACES=181, PETRI_TRANSITIONS=105} [2024-06-03 20:02:35,009 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-03 20:02:35,009 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 105 transitions, 771 flow [2024-06-03 20:02:35,009 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) [2024-06-03 20:02:35,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:35,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:35,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 20:02:35,009 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)] === [2024-06-03 20:02:35,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash -625937400, now seen corresponding path program 2 times [2024-06-03 20:02:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513529639] [2024-06-03 20:02:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513529639] [2024-06-03 20:02:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513529639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:02:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746396506] [2024-06-03 20:02:36,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:02:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:02:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:02:36,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:36,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 105 transitions, 771 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) [2024-06-03 20:02:36,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:36,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:36,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:36,644 INFO L124 PetriNetUnfolderBase]: 326/676 cut-off events. [2024-06-03 20:02:36,644 INFO L125 PetriNetUnfolderBase]: For 80608/80608 co-relation queries the response was YES. [2024-06-03 20:02:36,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 676 events. 326/676 cut-off events. For 80608/80608 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3311 event pairs, 95 based on Foata normal form. 6/681 useless extension candidates. Maximal degree in co-relation 4189. Up to 551 conditions per place. [2024-06-03 20:02:36,648 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 16 changer transitions 16/125 dead transitions. [2024-06-03 20:02:36,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 125 transitions, 1071 flow [2024-06-03 20:02:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 20:02:36,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-03 20:02:36,649 INFO L175 Difference]: Start difference. First operand has 181 places, 105 transitions, 771 flow. Second operand 11 states and 107 transitions. [2024-06-03 20:02:36,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 125 transitions, 1071 flow [2024-06-03 20:02:36,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 125 transitions, 1021 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:36,813 INFO L231 Difference]: Finished difference. Result has 172 places, 99 transitions, 710 flow [2024-06-03 20:02:36,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=710, PETRI_PLACES=172, PETRI_TRANSITIONS=99} [2024-06-03 20:02:36,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-03 20:02:36,813 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 99 transitions, 710 flow [2024-06-03 20:02:36,813 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) [2024-06-03 20:02:36,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:36,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:36,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 20:02:36,814 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)] === [2024-06-03 20:02:36,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash -920372426, now seen corresponding path program 3 times [2024-06-03 20:02:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:36,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498491819] [2024-06-03 20:02:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:36,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498491819] [2024-06-03 20:02:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498491819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:38,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:38,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:02:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028040957] [2024-06-03 20:02:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:02:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:02:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:02:38,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:38,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 99 transitions, 710 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) [2024-06-03 20:02:38,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:38,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:38,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:38,384 INFO L124 PetriNetUnfolderBase]: 305/641 cut-off events. [2024-06-03 20:02:38,384 INFO L125 PetriNetUnfolderBase]: For 71057/71057 co-relation queries the response was YES. [2024-06-03 20:02:38,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 641 events. 305/641 cut-off events. For 71057/71057 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3119 event pairs, 100 based on Foata normal form. 8/648 useless extension candidates. Maximal degree in co-relation 3785. Up to 505 conditions per place. [2024-06-03 20:02:38,388 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 22 changer transitions 9/118 dead transitions. [2024-06-03 20:02:38,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 118 transitions, 998 flow [2024-06-03 20:02:38,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-03 20:02:38,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-03 20:02:38,389 INFO L175 Difference]: Start difference. First operand has 172 places, 99 transitions, 710 flow. Second operand 11 states and 109 transitions. [2024-06-03 20:02:38,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 118 transitions, 998 flow [2024-06-03 20:02:38,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 118 transitions, 958 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:38,499 INFO L231 Difference]: Finished difference. Result has 166 places, 95 transitions, 679 flow [2024-06-03 20:02:38,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=679, PETRI_PLACES=166, PETRI_TRANSITIONS=95} [2024-06-03 20:02:38,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-03 20:02:38,499 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 95 transitions, 679 flow [2024-06-03 20:02:38,499 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) [2024-06-03 20:02:38,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:38,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:38,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 20:02:38,499 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)] === [2024-06-03 20:02:38,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash -622218330, now seen corresponding path program 4 times [2024-06-03 20:02:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:38,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097002248] [2024-06-03 20:02:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:39,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:39,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097002248] [2024-06-03 20:02:39,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097002248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:39,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:02:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92610875] [2024-06-03 20:02:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:39,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:02:39,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:02:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:02:40,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:40,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 95 transitions, 679 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) [2024-06-03 20:02:40,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:40,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:40,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:40,342 INFO L124 PetriNetUnfolderBase]: 296/626 cut-off events. [2024-06-03 20:02:40,342 INFO L125 PetriNetUnfolderBase]: For 60686/60686 co-relation queries the response was YES. [2024-06-03 20:02:40,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3710 conditions, 626 events. 296/626 cut-off events. For 60686/60686 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3034 event pairs, 96 based on Foata normal form. 6/631 useless extension candidates. Maximal degree in co-relation 3629. Up to 493 conditions per place. [2024-06-03 20:02:40,346 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 18 changer transitions 13/115 dead transitions. [2024-06-03 20:02:40,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 115 transitions, 963 flow [2024-06-03 20:02:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 20:02:40,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-03 20:02:40,347 INFO L175 Difference]: Start difference. First operand has 166 places, 95 transitions, 679 flow. Second operand 11 states and 107 transitions. [2024-06-03 20:02:40,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 115 transitions, 963 flow [2024-06-03 20:02:40,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 115 transitions, 878 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:40,455 INFO L231 Difference]: Finished difference. Result has 162 places, 90 transitions, 601 flow [2024-06-03 20:02:40,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=601, PETRI_PLACES=162, PETRI_TRANSITIONS=90} [2024-06-03 20:02:40,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-03 20:02:40,456 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 90 transitions, 601 flow [2024-06-03 20:02:40,456 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) [2024-06-03 20:02:40,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:40,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:40,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 20:02:40,456 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)] === [2024-06-03 20:02:40,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:40,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1943557482, now seen corresponding path program 5 times [2024-06-03 20:02:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:40,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508344371] [2024-06-03 20:02:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:40,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:41,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508344371] [2024-06-03 20:02:41,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508344371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:41,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:41,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:02:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144056467] [2024-06-03 20:02:41,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:02:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:02:41,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:02:41,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:41,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 90 transitions, 601 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) [2024-06-03 20:02:41,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:41,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:41,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:41,907 INFO L124 PetriNetUnfolderBase]: 283/603 cut-off events. [2024-06-03 20:02:41,907 INFO L125 PetriNetUnfolderBase]: For 52596/52596 co-relation queries the response was YES. [2024-06-03 20:02:41,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 603 events. 283/603 cut-off events. For 52596/52596 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2906 event pairs, 94 based on Foata normal form. 6/608 useless extension candidates. Maximal degree in co-relation 3348. Up to 473 conditions per place. [2024-06-03 20:02:41,910 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 6 changer transitions 32/110 dead transitions. [2024-06-03 20:02:41,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 110 transitions, 871 flow [2024-06-03 20:02:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-03 20:02:41,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-03 20:02:41,911 INFO L175 Difference]: Start difference. First operand has 162 places, 90 transitions, 601 flow. Second operand 11 states and 106 transitions. [2024-06-03 20:02:41,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 110 transitions, 871 flow [2024-06-03 20:02:41,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 110 transitions, 829 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:41,985 INFO L231 Difference]: Finished difference. Result has 157 places, 74 transitions, 435 flow [2024-06-03 20:02:41,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=435, PETRI_PLACES=157, PETRI_TRANSITIONS=74} [2024-06-03 20:02:41,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-03 20:02:41,985 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 74 transitions, 435 flow [2024-06-03 20:02:41,985 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) [2024-06-03 20:02:41,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:41,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:41,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 20:02:41,985 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)] === [2024-06-03 20:02:41,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash 746305010, now seen corresponding path program 6 times [2024-06-03 20:02:41,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:41,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086035028] [2024-06-03 20:02:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:41,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086035028] [2024-06-03 20:02:43,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086035028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:43,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:43,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:43,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671713385] [2024-06-03 20:02:43,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:43,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:43,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:43,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:43,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:43,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:43,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 74 transitions, 435 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) [2024-06-03 20:02:43,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:43,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:43,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:43,425 INFO L124 PetriNetUnfolderBase]: 239/514 cut-off events. [2024-06-03 20:02:43,425 INFO L125 PetriNetUnfolderBase]: For 48563/48563 co-relation queries the response was YES. [2024-06-03 20:02:43,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 514 events. 239/514 cut-off events. For 48563/48563 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2406 event pairs, 87 based on Foata normal form. 6/519 useless extension candidates. Maximal degree in co-relation 2899. Up to 426 conditions per place. [2024-06-03 20:02:43,428 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 11 changer transitions 10/90 dead transitions. [2024-06-03 20:02:43,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 90 transitions, 649 flow [2024-06-03 20:02:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-03 20:02:43,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-03 20:02:43,429 INFO L175 Difference]: Start difference. First operand has 157 places, 74 transitions, 435 flow. Second operand 11 states and 103 transitions. [2024-06-03 20:02:43,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 90 transitions, 649 flow [2024-06-03 20:02:43,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 90 transitions, 613 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-03 20:02:43,486 INFO L231 Difference]: Finished difference. Result has 138 places, 70 transitions, 407 flow [2024-06-03 20:02:43,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=138, PETRI_TRANSITIONS=70} [2024-06-03 20:02:43,486 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-03 20:02:43,486 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 70 transitions, 407 flow [2024-06-03 20:02:43,486 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) [2024-06-03 20:02:43,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:43,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 20:02:43,487 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)] === [2024-06-03 20:02:43,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash -689147680, now seen corresponding path program 7 times [2024-06-03 20:02:43,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:43,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094604748] [2024-06-03 20:02:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094604748] [2024-06-03 20:02:44,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094604748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:44,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:44,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630444133] [2024-06-03 20:02:44,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:44,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:44,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:44,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 70 transitions, 407 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) [2024-06-03 20:02:44,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:44,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:44,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:44,840 INFO L124 PetriNetUnfolderBase]: 212/457 cut-off events. [2024-06-03 20:02:44,840 INFO L125 PetriNetUnfolderBase]: For 33026/33026 co-relation queries the response was YES. [2024-06-03 20:02:44,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2363 conditions, 457 events. 212/457 cut-off events. For 33026/33026 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2049 event pairs, 76 based on Foata normal form. 6/462 useless extension candidates. Maximal degree in co-relation 2307. Up to 389 conditions per place. [2024-06-03 20:02:44,842 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 7 changer transitions 15/85 dead transitions. [2024-06-03 20:02:44,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 85 transitions, 607 flow [2024-06-03 20:02:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-03 20:02:44,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-03 20:02:44,843 INFO L175 Difference]: Start difference. First operand has 138 places, 70 transitions, 407 flow. Second operand 11 states and 100 transitions. [2024-06-03 20:02:44,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 85 transitions, 607 flow [2024-06-03 20:02:44,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 85 transitions, 577 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:44,880 INFO L231 Difference]: Finished difference. Result has 132 places, 65 transitions, 370 flow [2024-06-03 20:02:44,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=370, PETRI_PLACES=132, PETRI_TRANSITIONS=65} [2024-06-03 20:02:44,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-03 20:02:44,881 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 65 transitions, 370 flow [2024-06-03 20:02:44,881 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) [2024-06-03 20:02:44,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:44,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:44,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 20:02:44,881 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)] === [2024-06-03 20:02:44,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -250503024, now seen corresponding path program 8 times [2024-06-03 20:02:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355641146] [2024-06-03 20:02:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:46,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:46,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355641146] [2024-06-03 20:02:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355641146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:46,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:02:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54264611] [2024-06-03 20:02:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:02:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:02:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:02:46,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:46,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 65 transitions, 370 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) [2024-06-03 20:02:46,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:46,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:46,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:46,600 INFO L124 PetriNetUnfolderBase]: 202/435 cut-off events. [2024-06-03 20:02:46,600 INFO L125 PetriNetUnfolderBase]: For 28936/28936 co-relation queries the response was YES. [2024-06-03 20:02:46,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2216 conditions, 435 events. 202/435 cut-off events. For 28936/28936 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1912 event pairs, 72 based on Foata normal form. 6/440 useless extension candidates. Maximal degree in co-relation 2163. Up to 357 conditions per place. [2024-06-03 20:02:46,602 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 8 changer transitions 14/82 dead transitions. [2024-06-03 20:02:46,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 82 transitions, 568 flow [2024-06-03 20:02:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-03 20:02:46,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-03 20:02:46,603 INFO L175 Difference]: Start difference. First operand has 132 places, 65 transitions, 370 flow. Second operand 11 states and 102 transitions. [2024-06-03 20:02:46,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 82 transitions, 568 flow [2024-06-03 20:02:46,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 82 transitions, 544 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:46,627 INFO L231 Difference]: Finished difference. Result has 123 places, 61 transitions, 347 flow [2024-06-03 20:02:46,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=347, PETRI_PLACES=123, PETRI_TRANSITIONS=61} [2024-06-03 20:02:46,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-03 20:02:46,627 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 61 transitions, 347 flow [2024-06-03 20:02:46,628 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) [2024-06-03 20:02:46,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:46,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 20:02:46,628 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)] === [2024-06-03 20:02:46,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -517068868, now seen corresponding path program 9 times [2024-06-03 20:02:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282484264] [2024-06-03 20:02:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:47,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:47,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282484264] [2024-06-03 20:02:47,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282484264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:47,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324436006] [2024-06-03 20:02:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:48,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:48,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 61 transitions, 347 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) [2024-06-03 20:02:48,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:48,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:48,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:48,244 INFO L124 PetriNetUnfolderBase]: 188/409 cut-off events. [2024-06-03 20:02:48,244 INFO L125 PetriNetUnfolderBase]: For 23916/23916 co-relation queries the response was YES. [2024-06-03 20:02:48,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 409 events. 188/409 cut-off events. For 23916/23916 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1769 event pairs, 68 based on Foata normal form. 6/414 useless extension candidates. Maximal degree in co-relation 2001. Up to 331 conditions per place. [2024-06-03 20:02:48,246 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 48 selfloop transitions, 3 changer transitions 25/78 dead transitions. [2024-06-03 20:02:48,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 78 transitions, 537 flow [2024-06-03 20:02:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-03 20:02:48,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-03 20:02:48,246 INFO L175 Difference]: Start difference. First operand has 123 places, 61 transitions, 347 flow. Second operand 11 states and 101 transitions. [2024-06-03 20:02:48,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 78 transitions, 537 flow [2024-06-03 20:02:48,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 78 transitions, 513 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:48,267 INFO L231 Difference]: Finished difference. Result has 117 places, 52 transitions, 287 flow [2024-06-03 20:02:48,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=287, PETRI_PLACES=117, PETRI_TRANSITIONS=52} [2024-06-03 20:02:48,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-03 20:02:48,268 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 52 transitions, 287 flow [2024-06-03 20:02:48,268 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) [2024-06-03 20:02:48,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:48,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:48,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 20:02:48,268 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)] === [2024-06-03 20:02:48,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1769965010, now seen corresponding path program 10 times [2024-06-03 20:02:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:48,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447576403] [2024-06-03 20:02:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:48,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:49,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:49,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447576403] [2024-06-03 20:02:49,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447576403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:49,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:49,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:49,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589760587] [2024-06-03 20:02:49,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:49,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:49,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:49,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 52 transitions, 287 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) [2024-06-03 20:02:49,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:49,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:49,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:49,587 INFO L124 PetriNetUnfolderBase]: 151/327 cut-off events. [2024-06-03 20:02:49,587 INFO L125 PetriNetUnfolderBase]: For 16328/16328 co-relation queries the response was YES. [2024-06-03 20:02:49,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 327 events. 151/327 cut-off events. For 16328/16328 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1327 event pairs, 53 based on Foata normal form. 6/332 useless extension candidates. Maximal degree in co-relation 1488. Up to 265 conditions per place. [2024-06-03 20:02:49,588 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 9 changer transitions 11/66 dead transitions. [2024-06-03 20:02:49,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 66 transitions, 445 flow [2024-06-03 20:02:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-03 20:02:49,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-03 20:02:49,589 INFO L175 Difference]: Start difference. First operand has 117 places, 52 transitions, 287 flow. Second operand 11 states and 99 transitions. [2024-06-03 20:02:49,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 66 transitions, 445 flow [2024-06-03 20:02:49,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 66 transitions, 421 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:49,602 INFO L231 Difference]: Finished difference. Result has 102 places, 49 transitions, 269 flow [2024-06-03 20:02:49,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=269, PETRI_PLACES=102, PETRI_TRANSITIONS=49} [2024-06-03 20:02:49,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-03 20:02:49,602 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 49 transitions, 269 flow [2024-06-03 20:02:49,602 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) [2024-06-03 20:02:49,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:49,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:49,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 20:02:49,602 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)] === [2024-06-03 20:02:49,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2058282482, now seen corresponding path program 11 times [2024-06-03 20:02:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:49,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135864629] [2024-06-03 20:02:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:49,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135864629] [2024-06-03 20:02:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135864629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:50,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:50,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729587651] [2024-06-03 20:02:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:50,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:50,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:50,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 49 transitions, 269 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) [2024-06-03 20:02:50,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:50,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:50,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:50,929 INFO L124 PetriNetUnfolderBase]: 141/309 cut-off events. [2024-06-03 20:02:50,929 INFO L125 PetriNetUnfolderBase]: For 11450/11450 co-relation queries the response was YES. [2024-06-03 20:02:50,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 309 events. 141/309 cut-off events. For 11450/11450 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1243 event pairs, 51 based on Foata normal form. 6/314 useless extension candidates. Maximal degree in co-relation 1340. Up to 247 conditions per place. [2024-06-03 20:02:50,930 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 6 changer transitions 16/63 dead transitions. [2024-06-03 20:02:50,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 63 transitions, 421 flow [2024-06-03 20:02:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-03 20:02:50,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-03 20:02:50,931 INFO L175 Difference]: Start difference. First operand has 102 places, 49 transitions, 269 flow. Second operand 11 states and 98 transitions. [2024-06-03 20:02:50,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 63 transitions, 421 flow [2024-06-03 20:02:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 63 transitions, 397 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:50,952 INFO L231 Difference]: Finished difference. Result has 97 places, 44 transitions, 237 flow [2024-06-03 20:02:50,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=237, PETRI_PLACES=97, PETRI_TRANSITIONS=44} [2024-06-03 20:02:50,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-03 20:02:50,953 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 44 transitions, 237 flow [2024-06-03 20:02:50,953 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) [2024-06-03 20:02:50,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:50,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:50,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 20:02:50,954 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)] === [2024-06-03 20:02:50,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1317593096, now seen corresponding path program 12 times [2024-06-03 20:02:50,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:50,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134175094] [2024-06-03 20:02:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:50,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134175094] [2024-06-03 20:02:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134175094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403668071] [2024-06-03 20:02:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:52,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:52,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:52,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:52,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 44 transitions, 237 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) [2024-06-03 20:02:52,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:52,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:52,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:52,279 INFO L124 PetriNetUnfolderBase]: 113/249 cut-off events. [2024-06-03 20:02:52,279 INFO L125 PetriNetUnfolderBase]: For 7516/7516 co-relation queries the response was YES. [2024-06-03 20:02:52,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 249 events. 113/249 cut-off events. For 7516/7516 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 904 event pairs, 38 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 980. Up to 171 conditions per place. [2024-06-03 20:02:52,280 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 34 selfloop transitions, 9 changer transitions 13/58 dead transitions. [2024-06-03 20:02:52,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 58 transitions, 379 flow [2024-06-03 20:02:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-03 20:02:52,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-03 20:02:52,281 INFO L175 Difference]: Start difference. First operand has 97 places, 44 transitions, 237 flow. Second operand 11 states and 99 transitions. [2024-06-03 20:02:52,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 58 transitions, 379 flow [2024-06-03 20:02:52,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 58 transitions, 357 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:52,287 INFO L231 Difference]: Finished difference. Result has 89 places, 40 transitions, 216 flow [2024-06-03 20:02:52,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=89, PETRI_TRANSITIONS=40} [2024-06-03 20:02:52,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-03 20:02:52,287 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 40 transitions, 216 flow [2024-06-03 20:02:52,287 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) [2024-06-03 20:02:52,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:52,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:52,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 20:02:52,288 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)] === [2024-06-03 20:02:52,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1061618598, now seen corresponding path program 13 times [2024-06-03 20:02:52,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:52,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223469405] [2024-06-03 20:02:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:52,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:53,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:53,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223469405] [2024-06-03 20:02:53,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223469405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:53,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:53,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:02:53,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966970755] [2024-06-03 20:02:53,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:53,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:02:53,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:02:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:02:53,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:53,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 40 transitions, 216 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) [2024-06-03 20:02:53,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:53,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:53,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:53,891 INFO L124 PetriNetUnfolderBase]: 104/230 cut-off events. [2024-06-03 20:02:53,891 INFO L125 PetriNetUnfolderBase]: For 5596/5596 co-relation queries the response was YES. [2024-06-03 20:02:53,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 230 events. 104/230 cut-off events. For 5596/5596 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 808 event pairs, 34 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 884. Up to 163 conditions per place. [2024-06-03 20:02:53,892 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 33 selfloop transitions, 9 changer transitions 11/55 dead transitions. [2024-06-03 20:02:53,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 55 transitions, 354 flow [2024-06-03 20:02:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-03 20:02:53,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-03 20:02:53,892 INFO L175 Difference]: Start difference. First operand has 89 places, 40 transitions, 216 flow. Second operand 11 states and 100 transitions. [2024-06-03 20:02:53,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 55 transitions, 354 flow [2024-06-03 20:02:53,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 55 transitions, 328 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:53,896 INFO L231 Difference]: Finished difference. Result has 82 places, 37 transitions, 197 flow [2024-06-03 20:02:53,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=197, PETRI_PLACES=82, PETRI_TRANSITIONS=37} [2024-06-03 20:02:53,897 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-03 20:02:53,897 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions, 197 flow [2024-06-03 20:02:53,897 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) [2024-06-03 20:02:53,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:53,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:53,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 20:02:53,897 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)] === [2024-06-03 20:02:53,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1118147156, now seen corresponding path program 14 times [2024-06-03 20:02:53,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:53,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863483003] [2024-06-03 20:02:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:53,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:55,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863483003] [2024-06-03 20:02:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863483003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:55,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:55,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170115889] [2024-06-03 20:02:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:55,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:55,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:55,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions, 197 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) [2024-06-03 20:02:55,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:55,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:55,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:55,422 INFO L124 PetriNetUnfolderBase]: 94/212 cut-off events. [2024-06-03 20:02:55,422 INFO L125 PetriNetUnfolderBase]: For 4352/4352 co-relation queries the response was YES. [2024-06-03 20:02:55,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 212 events. 94/212 cut-off events. For 4352/4352 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 723 event pairs, 32 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 802. Up to 129 conditions per place. [2024-06-03 20:02:55,423 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 9 changer transitions 11/51 dead transitions. [2024-06-03 20:02:55,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 51 transitions, 325 flow [2024-06-03 20:02:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-03 20:02:55,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-03 20:02:55,424 INFO L175 Difference]: Start difference. First operand has 82 places, 37 transitions, 197 flow. Second operand 11 states and 98 transitions. [2024-06-03 20:02:55,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 51 transitions, 325 flow [2024-06-03 20:02:55,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 51 transitions, 301 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:55,427 INFO L231 Difference]: Finished difference. Result has 78 places, 32 transitions, 170 flow [2024-06-03 20:02:55,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=78, PETRI_TRANSITIONS=32} [2024-06-03 20:02:55,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-03 20:02:55,427 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 32 transitions, 170 flow [2024-06-03 20:02:55,427 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) [2024-06-03 20:02:55,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:55,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:55,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 20:02:55,428 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)] === [2024-06-03 20:02:55,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:55,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1293519962, now seen corresponding path program 15 times [2024-06-03 20:02:55,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:55,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954266042] [2024-06-03 20:02:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:55,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:56,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:56,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954266042] [2024-06-03 20:02:56,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954266042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:56,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:56,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:56,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420653448] [2024-06-03 20:02:56,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:56,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:56,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:56,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:56,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:56,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:56,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 32 transitions, 170 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) [2024-06-03 20:02:56,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:56,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:56,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:56,790 INFO L124 PetriNetUnfolderBase]: 66/152 cut-off events. [2024-06-03 20:02:56,790 INFO L125 PetriNetUnfolderBase]: For 2396/2396 co-relation queries the response was YES. [2024-06-03 20:02:56,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 152 events. 66/152 cut-off events. For 2396/2396 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 435 event pairs, 21 based on Foata normal form. 6/157 useless extension candidates. Maximal degree in co-relation 514. Up to 95 conditions per place. [2024-06-03 20:02:56,791 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 22 selfloop transitions, 4 changer transitions 17/45 dead transitions. [2024-06-03 20:02:56,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 45 transitions, 284 flow [2024-06-03 20:02:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-03 20:02:56,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2785923753665689 [2024-06-03 20:02:56,791 INFO L175 Difference]: Start difference. First operand has 78 places, 32 transitions, 170 flow. Second operand 11 states and 95 transitions. [2024-06-03 20:02:56,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 45 transitions, 284 flow [2024-06-03 20:02:56,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 45 transitions, 256 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-03 20:02:56,793 INFO L231 Difference]: Finished difference. Result has 70 places, 26 transitions, 125 flow [2024-06-03 20:02:56,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=125, PETRI_PLACES=70, PETRI_TRANSITIONS=26} [2024-06-03 20:02:56,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-03 20:02:56,793 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 26 transitions, 125 flow [2024-06-03 20:02:56,793 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) [2024-06-03 20:02:56,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:56,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:56,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 20:02:56,794 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)] === [2024-06-03 20:02:56,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:56,794 INFO L85 PathProgramCache]: Analyzing trace with hash -875476058, now seen corresponding path program 16 times [2024-06-03 20:02:56,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003307409] [2024-06-03 20:02:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:58,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:58,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003307409] [2024-06-03 20:02:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003307409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:58,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179441684] [2024-06-03 20:02:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:58,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:58,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:02:58,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 26 transitions, 125 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) [2024-06-03 20:02:58,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:58,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:02:58,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:58,580 INFO L124 PetriNetUnfolderBase]: 55/127 cut-off events. [2024-06-03 20:02:58,581 INFO L125 PetriNetUnfolderBase]: For 1524/1524 co-relation queries the response was YES. [2024-06-03 20:02:58,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 127 events. 55/127 cut-off events. For 1524/1524 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 319 event pairs, 17 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 408. Up to 60 conditions per place. [2024-06-03 20:02:58,581 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 6 changer transitions 14/40 dead transitions. [2024-06-03 20:02:58,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 40 transitions, 231 flow [2024-06-03 20:02:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-03 20:02:58,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2756598240469208 [2024-06-03 20:02:58,582 INFO L175 Difference]: Start difference. First operand has 70 places, 26 transitions, 125 flow. Second operand 11 states and 94 transitions. [2024-06-03 20:02:58,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 40 transitions, 231 flow [2024-06-03 20:02:58,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 40 transitions, 213 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:58,583 INFO L231 Difference]: Finished difference. Result has 59 places, 22 transitions, 104 flow [2024-06-03 20:02:58,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=104, PETRI_PLACES=59, PETRI_TRANSITIONS=22} [2024-06-03 20:02:58,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-03 20:02:58,583 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 22 transitions, 104 flow [2024-06-03 20:02:58,583 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) [2024-06-03 20:02:58,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:58,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:58,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 20:02:58,584 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)] === [2024-06-03 20:02:58,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1057899528, now seen corresponding path program 17 times [2024-06-03 20:02:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924318767] [2024-06-03 20:02:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:59,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924318767] [2024-06-03 20:02:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924318767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:59,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:59,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534028965] [2024-06-03 20:02:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:59,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:59,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:59,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:59,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:00,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 20:03:00,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 22 transitions, 104 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) [2024-06-03 20:03:00,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:00,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 20:03:00,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:00,233 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-06-03 20:03:00,233 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-06-03 20:03:00,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 68 events. 26/68 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 176. Up to 24 conditions per place. [2024-06-03 20:03:00,233 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-03 20:03:00,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 31 transitions, 156 flow [2024-06-03 20:03:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-03 20:03:00,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24926686217008798 [2024-06-03 20:03:00,234 INFO L175 Difference]: Start difference. First operand has 59 places, 22 transitions, 104 flow. Second operand 11 states and 85 transitions. [2024-06-03 20:03:00,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 31 transitions, 156 flow [2024-06-03 20:03:00,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-03 20:03:00,235 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-03 20:03:00,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-03 20:03:00,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-03 20:03:00,235 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-03 20:03:00,235 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) [2024-06-03 20:03:00,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:03:00,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:03:00,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:03:00,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:03:00,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 20:03:00,239 INFO L445 BasicCegarLoop]: Path program histogram: [19, 17, 16, 10, 10, 10, 6, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:00,241 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:03:00,241 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:03:00,244 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:03:00,244 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:03:00,245 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:03:00 BasicIcfg [2024-06-03 20:03:00,245 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:03:00,245 INFO L158 Benchmark]: Toolchain (without parser) took 164047.29ms. Allocated memory was 197.1MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 162.2MB in the beginning and 991.4MB in the end (delta: -829.2MB). Peak memory consumption was 172.0MB. Max. memory is 16.1GB. [2024-06-03 20:03:00,246 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:03:00,246 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 168.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:03:00,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.72ms. Allocated memory is still 197.1MB. Free memory was 162.2MB in the beginning and 127.8MB in the end (delta: 34.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-03 20:03:00,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.41ms. Allocated memory is still 197.1MB. Free memory was 127.8MB in the beginning and 124.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 20:03:00,246 INFO L158 Benchmark]: Boogie Preprocessor took 61.73ms. Allocated memory is still 197.1MB. Free memory was 124.5MB in the beginning and 121.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:03:00,246 INFO L158 Benchmark]: RCFGBuilder took 588.17ms. Allocated memory is still 197.1MB. Free memory was 121.1MB in the beginning and 126.2MB in the end (delta: -5.0MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2024-06-03 20:03:00,247 INFO L158 Benchmark]: TraceAbstraction took 162787.72ms. Allocated memory was 197.1MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 125.1MB in the beginning and 991.4MB in the end (delta: -866.3MB). Peak memory consumption was 135.1MB. Max. memory is 16.1GB. [2024-06-03 20:03:00,247 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 168.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.72ms. Allocated memory is still 197.1MB. Free memory was 162.2MB in the beginning and 127.8MB in the end (delta: 34.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.41ms. Allocated memory is still 197.1MB. Free memory was 127.8MB in the beginning and 124.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.73ms. Allocated memory is still 197.1MB. Free memory was 124.5MB in the beginning and 121.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 588.17ms. Allocated memory is still 197.1MB. Free memory was 121.1MB in the beginning and 126.2MB in the end (delta: -5.0MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * TraceAbstraction took 162787.72ms. Allocated memory was 197.1MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 125.1MB in the beginning and 991.4MB in the end (delta: -866.3MB). Peak memory consumption was 135.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 162.7s, OverallIterations: 126, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 50.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6244 SdHoareTripleChecker+Valid, 25.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5351 mSDsluCounter, 2529 SdHoareTripleChecker+Invalid, 21.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1953 mSDsCounter, 1309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42370 IncrementalHoareTripleChecker+Invalid, 43679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1309 mSolverCounterUnsat, 576 mSDtfsCounter, 42370 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1324 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2492 ImplicationChecksByTransitivity, 31.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1778occurred in iteration=65, InterpolantAutomatonStates: 1162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 110.2s InterpolantComputationTime, 2092 NumberOfCodeBlocks, 2092 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 1966 ConstructedInterpolants, 0 QuantifiedInterpolants, 82514 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 126 InterpolantComputations, 126 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 20:03:00,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE