./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_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/rfi000_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/rfi000_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi000_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:05:49,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:05:49,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:05:49,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:05:49,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:05:49,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:05:49,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:05:49,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:05:49,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:05:49,953 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:05:49,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:05:49,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:05:49,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:05:49,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:05:49,956 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:05:49,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:05:49,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:05:49,956 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:05:49,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:05:49,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:05:49,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:05:49,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:05:49,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:05:49,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:05:49,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:05:49,958 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:05:49,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:05:49,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:05:49,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:05:49,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:05:49,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:05:49,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:05:49,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:49,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:05:49,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:05:49,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:05:49,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:05:49,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:05:49,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:05:49,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:05:49,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:05:49,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:05:49,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:05:49,963 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:05:50,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:05:50,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:05:50,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:05:50,171 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:05:50,172 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:05:50,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi000_tso.yml/witness.yml [2024-06-04 14:05:50,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:05:50,275 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:05:50,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-04 14:05:51,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:05:51,719 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:05:51,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-04 14:05:51,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f59220e4/9bcaa63a219e49b590cc0354fed20d9f/FLAG2eeb8af8e [2024-06-04 14:05:51,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f59220e4/9bcaa63a219e49b590cc0354fed20d9f [2024-06-04 14:05:51,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:05:51,754 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:05:51,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:51,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:05:51,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:05:51,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:50" (1/2) ... [2024-06-04 14:05:51,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f32a4ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:50" (1/2) ... [2024-06-04 14:05:51,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ae58cc5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (2/2) ... [2024-06-04 14:05:51,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f32a4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (2/2) ... [2024-06-04 14:05:51,766 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:05:51,875 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:05:51,876 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! 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$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-04 14:05:51,876 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$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 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-04 14:05:51,877 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:05:51,877 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-04 14:05:51,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:05:52,260 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:52,275 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:05:52,436 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:52,473 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:05:52,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52 WrapperNode [2024-06-04 14:05:52,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:52,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:52,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:05:52,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:05:52,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,570 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 176 [2024-06-04 14:05:52,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:52,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:05:52,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:05:52,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:05:52,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,591 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,610 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 14:05:52,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:05:52,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:05:52,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:05:52,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:05:52,652 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:52,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:52,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 14:05:52,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 14:05:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:05:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:05:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:05:52,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:05:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:05:52,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:05:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:05:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:05:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:05:52,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:05:52,709 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:05:52,836 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:05:52,838 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:05:53,191 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:05:53,198 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:05:53,336 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:05:53,336 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:05:53,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:53 BoogieIcfgContainer [2024-06-04 14:05:53,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:05:53,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:05:53,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:05:53,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:05:53,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:50" (1/4) ... [2024-06-04 14:05:53,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3509c2ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:53, skipping insertion in model container [2024-06-04 14:05:53,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:05:51" (2/4) ... [2024-06-04 14:05:53,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3509c2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:53, skipping insertion in model container [2024-06-04 14:05:53,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:52" (3/4) ... [2024-06-04 14:05:53,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3509c2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:53, skipping insertion in model container [2024-06-04 14:05:53,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:53" (4/4) ... [2024-06-04 14:05:53,344 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-04 14:05:53,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:05:53,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:05:53,359 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:05:53,392 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:05:53,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 14:05:53,444 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 14:05:53,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:53,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:05:53,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 14:05:53,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 14:05:53,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:05:53,471 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;@51891937, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:05:53,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:05:53,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:05:53,477 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 14:05:53,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:53,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:53,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:05:53,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:53,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:53,483 INFO L85 PathProgramCache]: Analyzing trace with hash -400399295, now seen corresponding path program 1 times [2024-06-04 14:05:53,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:53,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634061763] [2024-06-04 14:05:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:54,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634061763] [2024-06-04 14:05:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634061763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:54,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:05:54,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042338917] [2024-06-04 14:05:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:54,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:05:54,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:05:54,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:05:54,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:05:54,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:54,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:05:54,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:54,342 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-04 14:05:54,342 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 14:05:54,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 387 events. 216/387 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1367 event pairs, 133 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-04 14:05:54,347 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 14:05:54,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-04 14:05:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:05:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:05:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-04 14:05:54,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 14:05:54,357 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-04 14:05:54,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-04 14:05:54,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:54,360 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 14:05:54,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 14:05:54,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 14:05:54,365 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 14:05:54,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:54,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:54,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:05:54,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:54,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1763365024, now seen corresponding path program 1 times [2024-06-04 14:05:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:54,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713641045] [2024-06-04 14:05:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713641045] [2024-06-04 14:05:54,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713641045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:54,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:54,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436825129] [2024-06-04 14:05:54,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:54,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:54,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:54,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:05:54,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 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) [2024-06-04 14:05:54,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:54,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:05:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:54,997 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-04 14:05:54,997 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-04 14:05:55,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 109 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-04 14:05:55,003 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 14:05:55,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-04 14:05:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:05:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:05:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-04 14:05:55,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-04 14:05:55,006 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-04 14:05:55,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-04 14:05:55,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:55,012 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 14:05:55,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 14:05:55,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 14:05:55,014 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 14:05:55,014 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) [2024-06-04 14:05:55,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:55,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:55,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:05:55,016 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)] === [2024-06-04 14:05:55,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1170258078, now seen corresponding path program 1 times [2024-06-04 14:05:55,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:55,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324700558] [2024-06-04 14:05:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:55,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324700558] [2024-06-04 14:05:55,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324700558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:55,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:55,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:05:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580235690] [2024-06-04 14:05:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:55,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:05:55,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:05:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:05:55,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:05:55,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 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) [2024-06-04 14:05:55,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:55,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:05:55,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:55,558 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-04 14:05:55,559 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-04 14:05:55,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 386 events. 215/386 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 53 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 958. Up to 320 conditions per place. [2024-06-04 14:05:55,561 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-04 14:05:55,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 267 flow [2024-06-04 14:05:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-04 14:05:55,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 14:05:55,562 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 80 transitions. [2024-06-04 14:05:55,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 267 flow [2024-06-04 14:05:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:55,564 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-04 14:05:55,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-04 14:05:55,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 14:05:55,565 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-04 14:05:55,565 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) [2024-06-04 14:05:55,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:55,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:55,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:05:55,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:55,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash 663452449, now seen corresponding path program 1 times [2024-06-04 14:05:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932971701] [2024-06-04 14:05:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:56,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932971701] [2024-06-04 14:05:56,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932971701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:56,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:56,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:56,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152379587] [2024-06-04 14:05:56,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:56,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:56,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:56,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:56,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:56,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:05:56,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 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) [2024-06-04 14:05:56,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:56,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:05:56,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:56,654 INFO L124 PetriNetUnfolderBase]: 216/389 cut-off events. [2024-06-04 14:05:56,654 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-06-04 14:05:56,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 389 events. 216/389 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 28 based on Foata normal form. 6/395 useless extension candidates. Maximal degree in co-relation 1151. Up to 297 conditions per place. [2024-06-04 14:05:56,656 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-04 14:05:56,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 318 flow [2024-06-04 14:05:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-04 14:05:56,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 14:05:56,658 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 88 transitions. [2024-06-04 14:05:56,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 318 flow [2024-06-04 14:05:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 314 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-04 14:05:56,660 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 189 flow [2024-06-04 14:05:56,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-04 14:05:56,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-04 14:05:56,661 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 189 flow [2024-06-04 14:05:56,662 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) [2024-06-04 14:05:56,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:56,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:05:56,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:56,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 163026754, now seen corresponding path program 1 times [2024-06-04 14:05:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435119474] [2024-06-04 14:05:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:57,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435119474] [2024-06-04 14:05:57,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435119474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:57,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:57,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253845905] [2024-06-04 14:05:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:57,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:57,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:57,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:57,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:05:57,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:57,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:05:57,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:57,289 INFO L124 PetriNetUnfolderBase]: 214/386 cut-off events. [2024-06-04 14:05:57,289 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-04 14:05:57,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 386 events. 214/386 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1364 event pairs, 77 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1243. Up to 374 conditions per place. [2024-06-04 14:05:57,291 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-04 14:05:57,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 279 flow [2024-06-04 14:05:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-04 14:05:57,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 14:05:57,293 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 189 flow. Second operand 5 states and 56 transitions. [2024-06-04 14:05:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 279 flow [2024-06-04 14:05:57,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 248 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:57,295 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 175 flow [2024-06-04 14:05:57,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-06-04 14:05:57,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 14:05:57,300 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 175 flow [2024-06-04 14:05:57,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:57,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:57,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:05:57,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:57,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash 747764070, now seen corresponding path program 1 times [2024-06-04 14:05:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:57,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291002778] [2024-06-04 14:05:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:57,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:57,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291002778] [2024-06-04 14:05:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291002778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:57,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:57,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:57,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844671389] [2024-06-04 14:05:57,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:57,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:57,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:57,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:05:57,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:57,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:05:57,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:57,984 INFO L124 PetriNetUnfolderBase]: 212/383 cut-off events. [2024-06-04 14:05:57,984 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-04 14:05:57,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 383 events. 212/383 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1347 event pairs, 76 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1219. Up to 368 conditions per place. [2024-06-04 14:05:57,986 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-04 14:05:57,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 281 flow [2024-06-04 14:05:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-04 14:05:57,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:05:57,987 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 175 flow. Second operand 6 states and 64 transitions. [2024-06-04 14:05:57,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 281 flow [2024-06-04 14:05:57,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 266 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:57,990 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 193 flow [2024-06-04 14:05:57,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-04 14:05:57,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 14:05:57,991 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 193 flow [2024-06-04 14:05:57,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:57,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:57,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:05:57,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:57,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1700129407, now seen corresponding path program 1 times [2024-06-04 14:05:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177098817] [2024-06-04 14:05:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:58,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177098817] [2024-06-04 14:05:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177098817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:58,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577292111] [2024-06-04 14:05:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:58,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:58,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:58,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:05:58,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:58,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:05:58,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:58,823 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-04 14:05:58,823 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-06-04 14:05:58,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 382 events. 211/382 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1356 event pairs, 53 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1287. Up to 318 conditions per place. [2024-06-04 14:05:58,826 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-04 14:05:58,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 346 flow [2024-06-04 14:05:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-04 14:05:58,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:05:58,827 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 193 flow. Second operand 6 states and 74 transitions. [2024-06-04 14:05:58,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 346 flow [2024-06-04 14:05:58,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 329 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:58,829 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 224 flow [2024-06-04 14:05:58,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-04 14:05:58,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 14:05:58,830 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 224 flow [2024-06-04 14:05:58,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:58,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:58,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:05:58,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:58,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2049929377, now seen corresponding path program 2 times [2024-06-04 14:05:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589981432] [2024-06-04 14:05:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589981432] [2024-06-04 14:05:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589981432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:59,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:59,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734950851] [2024-06-04 14:05:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:59,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:05:59,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:59,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:59,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:05:59,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:59,539 INFO L124 PetriNetUnfolderBase]: 206/374 cut-off events. [2024-06-04 14:05:59,539 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-04 14:05:59,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 374 events. 206/374 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1309 event pairs, 66 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1319. Up to 311 conditions per place. [2024-06-04 14:05:59,541 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 32 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2024-06-04 14:05:59,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 334 flow [2024-06-04 14:05:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-04 14:05:59,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 14:05:59,542 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 224 flow. Second operand 6 states and 71 transitions. [2024-06-04 14:05:59,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 334 flow [2024-06-04 14:05:59,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 319 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:59,545 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 242 flow [2024-06-04 14:05:59,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-04 14:05:59,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-04 14:05:59,545 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 242 flow [2024-06-04 14:05:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:59,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:59,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:59,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:05:59,546 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:59,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2038318823, now seen corresponding path program 1 times [2024-06-04 14:05:59,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:59,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385792761] [2024-06-04 14:05:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:59,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:00,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385792761] [2024-06-04 14:06:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385792761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756591740] [2024-06-04 14:06:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:00,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:00,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:00,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:00,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:00,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:00,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:00,360 INFO L124 PetriNetUnfolderBase]: 204/369 cut-off events. [2024-06-04 14:06:00,360 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-04 14:06:00,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 369 events. 204/369 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1300 event pairs, 71 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1353. Up to 351 conditions per place. [2024-06-04 14:06:00,362 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-04 14:06:00,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 362 flow [2024-06-04 14:06:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:00,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-04 14:06:00,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-04 14:06:00,366 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 242 flow. Second operand 7 states and 72 transitions. [2024-06-04 14:06:00,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 362 flow [2024-06-04 14:06:00,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 316 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:00,369 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 235 flow [2024-06-04 14:06:00,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-04 14:06:00,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-04 14:06:00,370 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 235 flow [2024-06-04 14:06:00,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:00,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:00,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:06:00,371 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:00,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1164405607, now seen corresponding path program 1 times [2024-06-04 14:06:00,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:00,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266092444] [2024-06-04 14:06:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:00,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:00,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266092444] [2024-06-04 14:06:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266092444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:00,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116835861] [2024-06-04 14:06:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:00,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:00,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:00,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 235 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:00,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:00,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:01,089 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-04 14:06:01,089 INFO L125 PetriNetUnfolderBase]: For 1865/1865 co-relation queries the response was YES. [2024-06-04 14:06:01,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 385 events. 213/385 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1372 event pairs, 56 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 1423. Up to 314 conditions per place. [2024-06-04 14:06:01,092 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2024-06-04 14:06:01,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 415 flow [2024-06-04 14:06:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-04 14:06:01,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-04 14:06:01,093 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 235 flow. Second operand 7 states and 82 transitions. [2024-06-04 14:06:01,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 415 flow [2024-06-04 14:06:01,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 392 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:01,097 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 319 flow [2024-06-04 14:06:01,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-04 14:06:01,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-04 14:06:01,098 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 319 flow [2024-06-04 14:06:01,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:01,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:01,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:01,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:06:01,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:01,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:01,100 INFO L85 PathProgramCache]: Analyzing trace with hash -876697211, now seen corresponding path program 2 times [2024-06-04 14:06:01,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:01,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898344490] [2024-06-04 14:06:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:01,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:01,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:01,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898344490] [2024-06-04 14:06:01,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898344490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:01,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:01,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059936686] [2024-06-04 14:06:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:01,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:01,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:01,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:01,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:01,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:01,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:01,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:01,821 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-04 14:06:01,822 INFO L125 PetriNetUnfolderBase]: For 2310/2312 co-relation queries the response was YES. [2024-06-04 14:06:01,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 391 events. 216/391 cut-off events. For 2310/2312 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1395 event pairs, 63 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1638. Up to 325 conditions per place. [2024-06-04 14:06:01,824 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 19 changer transitions 0/59 dead transitions. [2024-06-04 14:06:01,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 463 flow [2024-06-04 14:06:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:01,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 14:06:01,825 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 319 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:01,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 463 flow [2024-06-04 14:06:01,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 442 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:01,829 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 359 flow [2024-06-04 14:06:01,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-04 14:06:01,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-04 14:06:01,830 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 359 flow [2024-06-04 14:06:01,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:01,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:01,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:01,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:06:01,830 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:01,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1236633251, now seen corresponding path program 3 times [2024-06-04 14:06:01,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112918975] [2024-06-04 14:06:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:01,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:02,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:02,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112918975] [2024-06-04 14:06:02,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112918975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:02,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:02,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:02,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361796597] [2024-06-04 14:06:02,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:02,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:02,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:02,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:02,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:02,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:02,588 INFO L124 PetriNetUnfolderBase]: 219/396 cut-off events. [2024-06-04 14:06:02,588 INFO L125 PetriNetUnfolderBase]: For 2841/2843 co-relation queries the response was YES. [2024-06-04 14:06:02,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 396 events. 219/396 cut-off events. For 2841/2843 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1415 event pairs, 62 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1729. Up to 311 conditions per place. [2024-06-04 14:06:02,591 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 36 selfloop transitions, 27 changer transitions 0/65 dead transitions. [2024-06-04 14:06:02,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 563 flow [2024-06-04 14:06:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 14:06:02,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-04 14:06:02,592 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 359 flow. Second operand 7 states and 83 transitions. [2024-06-04 14:06:02,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 563 flow [2024-06-04 14:06:02,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 518 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:02,596 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 424 flow [2024-06-04 14:06:02,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-04 14:06:02,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 14:06:02,597 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 424 flow [2024-06-04 14:06:02,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:02,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:02,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:06:02,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:02,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1236624323, now seen corresponding path program 1 times [2024-06-04 14:06:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:02,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526108511] [2024-06-04 14:06:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:03,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526108511] [2024-06-04 14:06:03,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526108511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:03,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:03,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264848716] [2024-06-04 14:06:03,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:03,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:03,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:03,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:04,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:04,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:04,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:04,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:04,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:04,320 INFO L124 PetriNetUnfolderBase]: 217/391 cut-off events. [2024-06-04 14:06:04,320 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-06-04 14:06:04,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 391 events. 217/391 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1372 event pairs, 47 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1828. Up to 366 conditions per place. [2024-06-04 14:06:04,323 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 53 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2024-06-04 14:06:04,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 626 flow [2024-06-04 14:06:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-04 14:06:04,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 14:06:04,324 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 424 flow. Second operand 8 states and 82 transitions. [2024-06-04 14:06:04,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 626 flow [2024-06-04 14:06:04,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 587 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:04,332 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 454 flow [2024-06-04 14:06:04,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=454, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-04 14:06:04,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-04 14:06:04,333 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 454 flow [2024-06-04 14:06:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:04,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:04,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:04,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:06:04,334 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:04,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:04,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1305882237, now seen corresponding path program 1 times [2024-06-04 14:06:04,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:04,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157649847] [2024-06-04 14:06:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:04,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:04,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157649847] [2024-06-04 14:06:04,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157649847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:04,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:04,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:04,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706221498] [2024-06-04 14:06:04,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:04,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:04,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:04,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:04,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 14:06:04,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:04,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:04,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:05,080 INFO L124 PetriNetUnfolderBase]: 223/402 cut-off events. [2024-06-04 14:06:05,080 INFO L125 PetriNetUnfolderBase]: For 3777/3777 co-relation queries the response was YES. [2024-06-04 14:06:05,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 402 events. 223/402 cut-off events. For 3777/3777 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1441 event pairs, 55 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1960. Up to 334 conditions per place. [2024-06-04 14:06:05,083 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 20 changer transitions 0/76 dead transitions. [2024-06-04 14:06:05,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 658 flow [2024-06-04 14:06:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-04 14:06:05,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:06:05,084 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 454 flow. Second operand 7 states and 84 transitions. [2024-06-04 14:06:05,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 658 flow [2024-06-04 14:06:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 631 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:05,089 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 494 flow [2024-06-04 14:06:05,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-04 14:06:05,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-04 14:06:05,090 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 494 flow [2024-06-04 14:06:05,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 14:06:05,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:05,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:05,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:06:05,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:05,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1736837022, now seen corresponding path program 1 times [2024-06-04 14:06:05,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107344751] [2024-06-04 14:06:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:05,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:05,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:05,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107344751] [2024-06-04 14:06:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107344751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:05,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:05,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249092453] [2024-06-04 14:06:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:05,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:05,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:05,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 494 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:05,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:05,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:05,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:05,943 INFO L124 PetriNetUnfolderBase]: 232/417 cut-off events. [2024-06-04 14:06:05,944 INFO L125 PetriNetUnfolderBase]: For 4411/4411 co-relation queries the response was YES. [2024-06-04 14:06:05,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 417 events. 232/417 cut-off events. For 4411/4411 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1507 event pairs, 53 based on Foata normal form. 3/420 useless extension candidates. Maximal degree in co-relation 2115. Up to 335 conditions per place. [2024-06-04 14:06:05,947 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 23 changer transitions 0/78 dead transitions. [2024-06-04 14:06:05,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 710 flow [2024-06-04 14:06:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:06:05,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:06:05,948 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 494 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:06:05,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 710 flow [2024-06-04 14:06:05,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 657 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:05,954 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 525 flow [2024-06-04 14:06:05,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-06-04 14:06:05,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-04 14:06:05,956 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 525 flow [2024-06-04 14:06:05,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:05,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:05,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:06:05,956 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:05,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1305887817, now seen corresponding path program 2 times [2024-06-04 14:06:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297907310] [2024-06-04 14:06:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:06,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:06,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297907310] [2024-06-04 14:06:06,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297907310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:06,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:06,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251432369] [2024-06-04 14:06:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:06,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:06,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 14:06:06,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:06,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:06,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:06,684 INFO L124 PetriNetUnfolderBase]: 238/427 cut-off events. [2024-06-04 14:06:06,684 INFO L125 PetriNetUnfolderBase]: For 4913/4913 co-relation queries the response was YES. [2024-06-04 14:06:06,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 427 events. 238/427 cut-off events. For 4913/4913 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1557 event pairs, 53 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2251. Up to 339 conditions per place. [2024-06-04 14:06:06,687 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-04 14:06:06,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 739 flow [2024-06-04 14:06:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-04 14:06:06,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-04 14:06:06,688 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 525 flow. Second operand 7 states and 82 transitions. [2024-06-04 14:06:06,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 739 flow [2024-06-04 14:06:06,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 677 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:06,695 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 543 flow [2024-06-04 14:06:06,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-04 14:06:06,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-04 14:06:06,696 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 543 flow [2024-06-04 14:06:06,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 14:06:06,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:06,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:06,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:06:06,696 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:06,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1400456542, now seen corresponding path program 2 times [2024-06-04 14:06:06,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:06,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220215393] [2024-06-04 14:06:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:06,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220215393] [2024-06-04 14:06:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220215393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:07,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243174300] [2024-06-04 14:06:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:07,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:07,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:07,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:07,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:07,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:07,517 INFO L124 PetriNetUnfolderBase]: 241/433 cut-off events. [2024-06-04 14:06:07,518 INFO L125 PetriNetUnfolderBase]: For 5511/5513 co-relation queries the response was YES. [2024-06-04 14:06:07,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 433 events. 241/433 cut-off events. For 5511/5513 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1583 event pairs, 59 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2331. Up to 345 conditions per place. [2024-06-04 14:06:07,521 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 29 changer transitions 0/79 dead transitions. [2024-06-04 14:06:07,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 775 flow [2024-06-04 14:06:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:07,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-04 14:06:07,522 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 543 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:07,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 775 flow [2024-06-04 14:06:07,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 713 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:07,529 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 568 flow [2024-06-04 14:06:07,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-06-04 14:06:07,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-04 14:06:07,530 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 568 flow [2024-06-04 14:06:07,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:07,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:07,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:07,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:06:07,531 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:07,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1362020450, now seen corresponding path program 3 times [2024-06-04 14:06:07,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:07,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144386716] [2024-06-04 14:06:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:08,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144386716] [2024-06-04 14:06:08,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144386716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:08,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:08,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740277617] [2024-06-04 14:06:08,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:08,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:08,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:08,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:08,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 568 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:08,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:08,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:08,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:08,362 INFO L124 PetriNetUnfolderBase]: 244/438 cut-off events. [2024-06-04 14:06:08,362 INFO L125 PetriNetUnfolderBase]: For 6147/6149 co-relation queries the response was YES. [2024-06-04 14:06:08,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 438 events. 244/438 cut-off events. For 6147/6149 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1592 event pairs, 62 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2406. Up to 369 conditions per place. [2024-06-04 14:06:08,365 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 21 changer transitions 0/79 dead transitions. [2024-06-04 14:06:08,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 764 flow [2024-06-04 14:06:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 14:06:08,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-04 14:06:08,367 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 568 flow. Second operand 8 states and 87 transitions. [2024-06-04 14:06:08,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 764 flow [2024-06-04 14:06:08,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 693 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:08,374 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 572 flow [2024-06-04 14:06:08,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-04 14:06:08,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-04 14:06:08,374 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 572 flow [2024-06-04 14:06:08,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:08,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:08,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:08,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:06:08,375 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:08,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 319076239, now seen corresponding path program 3 times [2024-06-04 14:06:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:08,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137670740] [2024-06-04 14:06:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:08,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:08,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137670740] [2024-06-04 14:06:08,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137670740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:08,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:08,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:08,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680356371] [2024-06-04 14:06:08,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:08,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:08,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:08,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:08,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:08,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 14:06:08,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:08,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:08,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:09,054 INFO L124 PetriNetUnfolderBase]: 245/440 cut-off events. [2024-06-04 14:06:09,054 INFO L125 PetriNetUnfolderBase]: For 6920/6922 co-relation queries the response was YES. [2024-06-04 14:06:09,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 440 events. 245/440 cut-off events. For 6920/6922 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1627 event pairs, 64 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2441. Up to 331 conditions per place. [2024-06-04 14:06:09,057 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 56 selfloop transitions, 27 changer transitions 0/85 dead transitions. [2024-06-04 14:06:09,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 860 flow [2024-06-04 14:06:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 14:06:09,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 14:06:09,059 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 572 flow. Second operand 7 states and 81 transitions. [2024-06-04 14:06:09,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 860 flow [2024-06-04 14:06:09,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 801 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:09,066 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 632 flow [2024-06-04 14:06:09,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-06-04 14:06:09,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-04 14:06:09,067 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 632 flow [2024-06-04 14:06:09,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-04 14:06:09,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:09,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:09,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:06:09,068 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:09,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1400189632, now seen corresponding path program 4 times [2024-06-04 14:06:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:09,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589174485] [2024-06-04 14:06:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:09,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:09,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589174485] [2024-06-04 14:06:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589174485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:09,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:09,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621963638] [2024-06-04 14:06:09,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:09,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:09,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:09,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:09,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:09,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:09,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:09,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:09,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:09,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:09,836 INFO L124 PetriNetUnfolderBase]: 243/435 cut-off events. [2024-06-04 14:06:09,836 INFO L125 PetriNetUnfolderBase]: For 7180/7180 co-relation queries the response was YES. [2024-06-04 14:06:09,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 435 events. 243/435 cut-off events. For 7180/7180 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1586 event pairs, 48 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2471. Up to 414 conditions per place. [2024-06-04 14:06:09,839 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-04 14:06:09,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 844 flow [2024-06-04 14:06:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:09,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-04 14:06:09,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:06:09,842 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 632 flow. Second operand 8 states and 80 transitions. [2024-06-04 14:06:09,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 844 flow [2024-06-04 14:06:09,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 800 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:09,852 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 649 flow [2024-06-04 14:06:09,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-06-04 14:06:09,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-04 14:06:09,853 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 649 flow [2024-06-04 14:06:09,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:09,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:09,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:09,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:06:09,854 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:09,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1354391970, now seen corresponding path program 1 times [2024-06-04 14:06:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:09,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843393328] [2024-06-04 14:06:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:09,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:11,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843393328] [2024-06-04 14:06:11,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843393328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:11,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:11,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:11,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832715443] [2024-06-04 14:06:11,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:11,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:11,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:11,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:11,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:11,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 649 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:11,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:11,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:11,500 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-04 14:06:11,516 INFO L125 PetriNetUnfolderBase]: For 7452/7452 co-relation queries the response was YES. [2024-06-04 14:06:11,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2506 conditions, 432 events. 241/432 cut-off events. For 7452/7452 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1581 event pairs, 47 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2460. Up to 408 conditions per place. [2024-06-04 14:06:11,520 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-04 14:06:11,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 86 transitions, 837 flow [2024-06-04 14:06:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-04 14:06:11,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 14:06:11,521 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 649 flow. Second operand 9 states and 88 transitions. [2024-06-04 14:06:11,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 86 transitions, 837 flow [2024-06-04 14:06:11,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 788 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:11,545 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 633 flow [2024-06-04 14:06:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=633, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-04 14:06:11,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-04 14:06:11,546 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 633 flow [2024-06-04 14:06:11,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:11,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:11,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:06:11,547 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:11,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:11,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2110958390, now seen corresponding path program 1 times [2024-06-04 14:06:11,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:11,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41291599] [2024-06-04 14:06:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:12,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41291599] [2024-06-04 14:06:12,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41291599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:12,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:12,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:12,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207826472] [2024-06-04 14:06:12,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:12,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:12,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:12,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:12,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:12,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 633 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:12,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:12,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:12,796 INFO L124 PetriNetUnfolderBase]: 245/440 cut-off events. [2024-06-04 14:06:12,797 INFO L125 PetriNetUnfolderBase]: For 8265/8265 co-relation queries the response was YES. [2024-06-04 14:06:12,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 440 events. 245/440 cut-off events. For 8265/8265 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1639 event pairs, 26 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2498. Up to 338 conditions per place. [2024-06-04 14:06:12,800 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 73 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-04 14:06:12,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 889 flow [2024-06-04 14:06:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:12,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 14:06:12,801 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 633 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:12,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 889 flow [2024-06-04 14:06:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 856 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:12,811 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 642 flow [2024-06-04 14:06:12,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=642, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-04 14:06:12,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 14:06:12,812 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 642 flow [2024-06-04 14:06:12,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:12,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:12,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:06:12,813 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:12,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2108216626, now seen corresponding path program 1 times [2024-06-04 14:06:12,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:12,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785288065] [2024-06-04 14:06:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:13,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785288065] [2024-06-04 14:06:13,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785288065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:13,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:13,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:13,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774503658] [2024-06-04 14:06:13,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:13,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:13,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:13,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:13,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:13,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 642 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:13,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:13,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:13,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:13,765 INFO L124 PetriNetUnfolderBase]: 243/437 cut-off events. [2024-06-04 14:06:13,765 INFO L125 PetriNetUnfolderBase]: For 8521/8521 co-relation queries the response was YES. [2024-06-04 14:06:13,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 437 events. 243/437 cut-off events. For 8521/8521 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1619 event pairs, 43 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2513. Up to 364 conditions per place. [2024-06-04 14:06:13,772 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 21 changer transitions 0/89 dead transitions. [2024-06-04 14:06:13,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 846 flow [2024-06-04 14:06:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 14:06:13,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-04 14:06:13,773 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 642 flow. Second operand 7 states and 83 transitions. [2024-06-04 14:06:13,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 846 flow [2024-06-04 14:06:13,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 815 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:13,788 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 662 flow [2024-06-04 14:06:13,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-04 14:06:13,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-04 14:06:13,789 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 662 flow [2024-06-04 14:06:13,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:13,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:13,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:13,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:06:13,790 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:13,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1712233806, now seen corresponding path program 2 times [2024-06-04 14:06:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:13,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176660232] [2024-06-04 14:06:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:13,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:14,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:14,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176660232] [2024-06-04 14:06:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176660232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:14,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039982761] [2024-06-04 14:06:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:14,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:14,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:14,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:14,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 662 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:14,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:14,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:14,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:14,706 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-04 14:06:14,706 INFO L125 PetriNetUnfolderBase]: For 8974/8974 co-relation queries the response was YES. [2024-06-04 14:06:14,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 432 events. 240/432 cut-off events. For 8974/8974 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1590 event pairs, 44 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2503. Up to 365 conditions per place. [2024-06-04 14:06:14,711 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 70 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-04 14:06:14,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 862 flow [2024-06-04 14:06:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 14:06:14,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 14:06:14,712 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 662 flow. Second operand 7 states and 81 transitions. [2024-06-04 14:06:14,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 862 flow [2024-06-04 14:06:14,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 799 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:14,725 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 637 flow [2024-06-04 14:06:14,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-04 14:06:14,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-04 14:06:14,726 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 637 flow [2024-06-04 14:06:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:14,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:14,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:14,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:06:14,727 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:14,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1827640420, now seen corresponding path program 2 times [2024-06-04 14:06:14,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557139844] [2024-06-04 14:06:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:14,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:15,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:15,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557139844] [2024-06-04 14:06:15,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557139844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:15,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:15,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:15,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517084369] [2024-06-04 14:06:15,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:15,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:15,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:15,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:15,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:15,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:15,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:15,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:15,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:15,803 INFO L124 PetriNetUnfolderBase]: 238/429 cut-off events. [2024-06-04 14:06:15,803 INFO L125 PetriNetUnfolderBase]: For 9057/9057 co-relation queries the response was YES. [2024-06-04 14:06:15,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 429 events. 238/429 cut-off events. For 9057/9057 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1568 event pairs, 44 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2437. Up to 359 conditions per place. [2024-06-04 14:06:15,807 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-04 14:06:15,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 855 flow [2024-06-04 14:06:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-04 14:06:15,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-04 14:06:15,808 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 637 flow. Second operand 7 states and 85 transitions. [2024-06-04 14:06:15,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 855 flow [2024-06-04 14:06:15,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 814 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:15,821 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 646 flow [2024-06-04 14:06:15,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-06-04 14:06:15,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-04 14:06:15,821 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 646 flow [2024-06-04 14:06:15,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:15,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:15,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:15,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:06:15,822 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:15,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1827818236, now seen corresponding path program 1 times [2024-06-04 14:06:15,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:15,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732049216] [2024-06-04 14:06:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:15,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:16,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732049216] [2024-06-04 14:06:16,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732049216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:16,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:16,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:16,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057835014] [2024-06-04 14:06:16,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:16,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:16,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:16,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:16,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:16,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 646 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:16,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:16,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:16,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:16,832 INFO L124 PetriNetUnfolderBase]: 244/440 cut-off events. [2024-06-04 14:06:16,833 INFO L125 PetriNetUnfolderBase]: For 10135/10135 co-relation queries the response was YES. [2024-06-04 14:06:16,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 440 events. 244/440 cut-off events. For 10135/10135 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1638 event pairs, 48 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2528. Up to 344 conditions per place. [2024-06-04 14:06:16,838 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 25 changer transitions 0/94 dead transitions. [2024-06-04 14:06:16,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 94 transitions, 898 flow [2024-06-04 14:06:16,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:16,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-04 14:06:16,840 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 646 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:16,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 94 transitions, 898 flow [2024-06-04 14:06:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 799 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:16,854 INFO L231 Difference]: Finished difference. Result has 95 places, 80 transitions, 630 flow [2024-06-04 14:06:16,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=630, PETRI_PLACES=95, PETRI_TRANSITIONS=80} [2024-06-04 14:06:16,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-04 14:06:16,854 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 80 transitions, 630 flow [2024-06-04 14:06:16,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:16,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:16,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:16,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:06:16,855 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:16,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1827645256, now seen corresponding path program 2 times [2024-06-04 14:06:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:16,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508988180] [2024-06-04 14:06:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:17,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508988180] [2024-06-04 14:06:17,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508988180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:17,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:17,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323541288] [2024-06-04 14:06:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:17,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:17,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:17,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:17,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 80 transitions, 630 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:17,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:17,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:17,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:17,783 INFO L124 PetriNetUnfolderBase]: 250/450 cut-off events. [2024-06-04 14:06:17,783 INFO L125 PetriNetUnfolderBase]: For 10901/10901 co-relation queries the response was YES. [2024-06-04 14:06:17,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 450 events. 250/450 cut-off events. For 10901/10901 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1686 event pairs, 52 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 2582. Up to 374 conditions per place. [2024-06-04 14:06:17,787 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-04 14:06:17,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 896 flow [2024-06-04 14:06:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 14:06:17,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 14:06:17,812 INFO L175 Difference]: Start difference. First operand has 95 places, 80 transitions, 630 flow. Second operand 8 states and 93 transitions. [2024-06-04 14:06:17,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 896 flow [2024-06-04 14:06:17,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 829 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:17,843 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 644 flow [2024-06-04 14:06:17,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-06-04 14:06:17,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-04 14:06:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 644 flow [2024-06-04 14:06:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:17,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:17,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:06:17,844 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:17,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 27020432, now seen corresponding path program 1 times [2024-06-04 14:06:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086481641] [2024-06-04 14:06:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:19,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086481641] [2024-06-04 14:06:19,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086481641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:19,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:19,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:19,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156024460] [2024-06-04 14:06:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:19,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:19,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:19,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:19,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:19,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:19,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:19,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:19,645 INFO L124 PetriNetUnfolderBase]: 259/465 cut-off events. [2024-06-04 14:06:19,645 INFO L125 PetriNetUnfolderBase]: For 12025/12025 co-relation queries the response was YES. [2024-06-04 14:06:19,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 465 events. 259/465 cut-off events. For 12025/12025 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1758 event pairs, 50 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2680. Up to 372 conditions per place. [2024-06-04 14:06:19,671 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 72 selfloop transitions, 26 changer transitions 0/100 dead transitions. [2024-06-04 14:06:19,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 926 flow [2024-06-04 14:06:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:06:19,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:06:19,678 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 644 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:06:19,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 926 flow [2024-06-04 14:06:19,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 861 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:19,697 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 683 flow [2024-06-04 14:06:19,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=683, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-06-04 14:06:19,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-04 14:06:19,703 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 683 flow [2024-06-04 14:06:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:19,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:19,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:19,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:06:19,704 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:19,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1827824746, now seen corresponding path program 3 times [2024-06-04 14:06:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:19,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367799667] [2024-06-04 14:06:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:20,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:20,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367799667] [2024-06-04 14:06:20,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367799667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:20,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:20,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:20,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548648343] [2024-06-04 14:06:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:20,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:20,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:20,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:20,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:20,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:20,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:20,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:20,630 INFO L124 PetriNetUnfolderBase]: 265/475 cut-off events. [2024-06-04 14:06:20,631 INFO L125 PetriNetUnfolderBase]: For 12364/12364 co-relation queries the response was YES. [2024-06-04 14:06:20,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 475 events. 265/475 cut-off events. For 12364/12364 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1810 event pairs, 46 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2809. Up to 349 conditions per place. [2024-06-04 14:06:20,654 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 32 changer transitions 0/101 dead transitions. [2024-06-04 14:06:20,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 959 flow [2024-06-04 14:06:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:06:20,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:06:20,657 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 683 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:06:20,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 959 flow [2024-06-04 14:06:20,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 877 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:20,699 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 709 flow [2024-06-04 14:06:20,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=709, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-06-04 14:06:20,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 14:06:20,701 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 709 flow [2024-06-04 14:06:20,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:20,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:20,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:20,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:06:20,702 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:20,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash -464478238, now seen corresponding path program 2 times [2024-06-04 14:06:20,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:20,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122711830] [2024-06-04 14:06:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:21,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:21,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122711830] [2024-06-04 14:06:21,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122711830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:21,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527885505] [2024-06-04 14:06:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:21,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:21,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:22,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:22,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 709 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:22,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:22,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:22,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:22,374 INFO L124 PetriNetUnfolderBase]: 271/486 cut-off events. [2024-06-04 14:06:22,374 INFO L125 PetriNetUnfolderBase]: For 13585/13587 co-relation queries the response was YES. [2024-06-04 14:06:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 486 events. 271/486 cut-off events. For 13585/13587 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1852 event pairs, 57 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 2923. Up to 393 conditions per place. [2024-06-04 14:06:22,377 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 67 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-06-04 14:06:22,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 963 flow [2024-06-04 14:06:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:06:22,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:06:22,379 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 709 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:06:22,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 963 flow [2024-06-04 14:06:22,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 873 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:22,398 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 716 flow [2024-06-04 14:06:22,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=716, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-06-04 14:06:22,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-04 14:06:22,399 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 716 flow [2024-06-04 14:06:22,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:22,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:22,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:22,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:06:22,400 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:22,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:22,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1073535998, now seen corresponding path program 3 times [2024-06-04 14:06:22,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:22,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606866686] [2024-06-04 14:06:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:22,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:23,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:23,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606866686] [2024-06-04 14:06:23,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606866686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:23,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:23,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:23,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508592630] [2024-06-04 14:06:23,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:23,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:23,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:23,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:23,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:23,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:23,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:24,083 INFO L124 PetriNetUnfolderBase]: 274/491 cut-off events. [2024-06-04 14:06:24,083 INFO L125 PetriNetUnfolderBase]: For 13870/13872 co-relation queries the response was YES. [2024-06-04 14:06:24,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 491 events. 274/491 cut-off events. For 13870/13872 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1872 event pairs, 61 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2958. Up to 419 conditions per place. [2024-06-04 14:06:24,087 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 23 changer transitions 0/100 dead transitions. [2024-06-04 14:06:24,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 100 transitions, 962 flow [2024-06-04 14:06:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 14:06:24,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-04 14:06:24,088 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 716 flow. Second operand 9 states and 95 transitions. [2024-06-04 14:06:24,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 100 transitions, 962 flow [2024-06-04 14:06:24,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 883 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:24,103 INFO L231 Difference]: Finished difference. Result has 106 places, 91 transitions, 722 flow [2024-06-04 14:06:24,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=722, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2024-06-04 14:06:24,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-04 14:06:24,103 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 722 flow [2024-06-04 14:06:24,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:24,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:24,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:24,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:06:24,104 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:24,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash -621508560, now seen corresponding path program 4 times [2024-06-04 14:06:24,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:24,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511360820] [2024-06-04 14:06:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:24,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:24,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:24,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511360820] [2024-06-04 14:06:24,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511360820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:24,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:24,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:24,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217808] [2024-06-04 14:06:24,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:24,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:24,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:24,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:24,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:24,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 91 transitions, 722 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:24,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:24,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:24,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:25,135 INFO L124 PetriNetUnfolderBase]: 280/501 cut-off events. [2024-06-04 14:06:25,135 INFO L125 PetriNetUnfolderBase]: For 15208/15210 co-relation queries the response was YES. [2024-06-04 14:06:25,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 501 events. 280/501 cut-off events. For 15208/15210 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1942 event pairs, 58 based on Foata normal form. 2/503 useless extension candidates. Maximal degree in co-relation 3035. Up to 386 conditions per place. [2024-06-04 14:06:25,139 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 29 changer transitions 0/104 dead transitions. [2024-06-04 14:06:25,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 1000 flow [2024-06-04 14:06:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 14:06:25,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 14:06:25,140 INFO L175 Difference]: Start difference. First operand has 106 places, 91 transitions, 722 flow. Second operand 8 states and 89 transitions. [2024-06-04 14:06:25,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 1000 flow [2024-06-04 14:06:25,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 931 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:25,155 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 758 flow [2024-06-04 14:06:25,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=758, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2024-06-04 14:06:25,156 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-04 14:06:25,156 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 758 flow [2024-06-04 14:06:25,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:25,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:25,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:25,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:06:25,156 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:25,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash 172156358, now seen corresponding path program 5 times [2024-06-04 14:06:25,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:25,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331841806] [2024-06-04 14:06:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:25,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331841806] [2024-06-04 14:06:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331841806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84228891] [2024-06-04 14:06:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:25,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:25,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:25,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:25,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:25,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:25,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:26,108 INFO L124 PetriNetUnfolderBase]: 291/519 cut-off events. [2024-06-04 14:06:26,108 INFO L125 PetriNetUnfolderBase]: For 17094/17096 co-relation queries the response was YES. [2024-06-04 14:06:26,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 519 events. 291/519 cut-off events. For 17094/17096 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2041 event pairs, 64 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 3281. Up to 336 conditions per place. [2024-06-04 14:06:26,111 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 41 changer transitions 0/113 dead transitions. [2024-06-04 14:06:26,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 1280 flow [2024-06-04 14:06:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:26,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 14:06:26,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:06:26,113 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 758 flow. Second operand 8 states and 96 transitions. [2024-06-04 14:06:26,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 1280 flow [2024-06-04 14:06:26,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 1191 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:26,130 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 886 flow [2024-06-04 14:06:26,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=886, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2024-06-04 14:06:26,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-04 14:06:26,131 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 886 flow [2024-06-04 14:06:26,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:26,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:26,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:26,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:06:26,132 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:26,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:26,132 INFO L85 PathProgramCache]: Analyzing trace with hash -455907358, now seen corresponding path program 4 times [2024-06-04 14:06:26,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:26,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128896230] [2024-06-04 14:06:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128896230] [2024-06-04 14:06:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128896230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:27,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185231490] [2024-06-04 14:06:27,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:27,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:27,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:27,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:27,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:27,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:27,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:27,461 INFO L124 PetriNetUnfolderBase]: 302/535 cut-off events. [2024-06-04 14:06:27,461 INFO L125 PetriNetUnfolderBase]: For 18840/18840 co-relation queries the response was YES. [2024-06-04 14:06:27,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 535 events. 302/535 cut-off events. For 18840/18840 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2098 event pairs, 50 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3490. Up to 501 conditions per place. [2024-06-04 14:06:27,465 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2024-06-04 14:06:27,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 114 transitions, 1270 flow [2024-06-04 14:06:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-04 14:06:27,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-04 14:06:27,467 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 886 flow. Second operand 9 states and 92 transitions. [2024-06-04 14:06:27,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 114 transitions, 1270 flow [2024-06-04 14:06:27,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 1215 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:27,490 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 952 flow [2024-06-04 14:06:27,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-04 14:06:27,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 14:06:27,490 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 952 flow [2024-06-04 14:06:27,491 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) [2024-06-04 14:06:27,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:27,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:06:27,491 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:27,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1309711110, now seen corresponding path program 6 times [2024-06-04 14:06:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280555762] [2024-06-04 14:06:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:28,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280555762] [2024-06-04 14:06:28,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280555762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:28,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:28,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801747306] [2024-06-04 14:06:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:28,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:28,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:28,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:28,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:28,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 952 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:28,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:28,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:28,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:28,290 INFO L124 PetriNetUnfolderBase]: 298/529 cut-off events. [2024-06-04 14:06:28,290 INFO L125 PetriNetUnfolderBase]: For 18488/18488 co-relation queries the response was YES. [2024-06-04 14:06:28,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 529 events. 298/529 cut-off events. For 18488/18488 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2077 event pairs, 50 based on Foata normal form. 2/531 useless extension candidates. Maximal degree in co-relation 3436. Up to 502 conditions per place. [2024-06-04 14:06:28,293 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 98 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2024-06-04 14:06:28,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 113 transitions, 1198 flow [2024-06-04 14:06:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-04 14:06:28,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 14:06:28,294 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 952 flow. Second operand 8 states and 82 transitions. [2024-06-04 14:06:28,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 113 transitions, 1198 flow [2024-06-04 14:06:28,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 113 transitions, 1112 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:28,316 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 897 flow [2024-06-04 14:06:28,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=897, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-04 14:06:28,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-04 14:06:28,316 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 897 flow [2024-06-04 14:06:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:28,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:28,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:06:28,317 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -456204028, now seen corresponding path program 5 times [2024-06-04 14:06:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727976642] [2024-06-04 14:06:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:29,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:29,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727976642] [2024-06-04 14:06:29,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727976642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:29,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:29,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:29,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078442694] [2024-06-04 14:06:29,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:29,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:29,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:29,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:29,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:29,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:29,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 897 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:29,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:29,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:29,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:29,438 INFO L124 PetriNetUnfolderBase]: 299/531 cut-off events. [2024-06-04 14:06:29,439 INFO L125 PetriNetUnfolderBase]: For 18387/18387 co-relation queries the response was YES. [2024-06-04 14:06:29,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 531 events. 299/531 cut-off events. For 18387/18387 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2082 event pairs, 49 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 3347. Up to 488 conditions per place. [2024-06-04 14:06:29,443 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-06-04 14:06:29,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 117 transitions, 1263 flow [2024-06-04 14:06:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 14:06:29,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-04 14:06:29,444 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 897 flow. Second operand 9 states and 95 transitions. [2024-06-04 14:06:29,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 117 transitions, 1263 flow [2024-06-04 14:06:29,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 117 transitions, 1228 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:29,467 INFO L231 Difference]: Finished difference. Result has 120 places, 106 transitions, 947 flow [2024-06-04 14:06:29,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=947, PETRI_PLACES=120, PETRI_TRANSITIONS=106} [2024-06-04 14:06:29,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-04 14:06:29,468 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 106 transitions, 947 flow [2024-06-04 14:06:29,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:29,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:29,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:06:29,468 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:29,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1310018940, now seen corresponding path program 1 times [2024-06-04 14:06:29,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:29,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587671482] [2024-06-04 14:06:29,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:30,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:30,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587671482] [2024-06-04 14:06:30,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587671482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:30,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:30,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:30,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321454957] [2024-06-04 14:06:30,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:30,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:30,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:31,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:31,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 106 transitions, 947 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:31,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:31,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:31,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:31,394 INFO L124 PetriNetUnfolderBase]: 296/526 cut-off events. [2024-06-04 14:06:31,394 INFO L125 PetriNetUnfolderBase]: For 18280/18280 co-relation queries the response was YES. [2024-06-04 14:06:31,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 526 events. 296/526 cut-off events. For 18280/18280 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2046 event pairs, 48 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 3326. Up to 496 conditions per place. [2024-06-04 14:06:31,398 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2024-06-04 14:06:31,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 1201 flow [2024-06-04 14:06:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-04 14:06:31,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-04 14:06:31,399 INFO L175 Difference]: Start difference. First operand has 120 places, 106 transitions, 947 flow. Second operand 10 states and 95 transitions. [2024-06-04 14:06:31,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 1201 flow [2024-06-04 14:06:31,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 1136 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:31,420 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 916 flow [2024-06-04 14:06:31,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=916, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-04 14:06:31,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-04 14:06:31,421 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 916 flow [2024-06-04 14:06:31,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:31,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:31,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:31,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:06:31,422 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:31,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:31,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1015199108, now seen corresponding path program 1 times [2024-06-04 14:06:31,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:31,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653360862] [2024-06-04 14:06:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:31,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:32,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653360862] [2024-06-04 14:06:32,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653360862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:32,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:32,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796935896] [2024-06-04 14:06:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:32,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:32,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:32,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:32,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:32,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:32,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:32,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:32,355 INFO L124 PetriNetUnfolderBase]: 300/534 cut-off events. [2024-06-04 14:06:32,355 INFO L125 PetriNetUnfolderBase]: For 18728/18728 co-relation queries the response was YES. [2024-06-04 14:06:32,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3395 conditions, 534 events. 300/534 cut-off events. For 18728/18728 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2113 event pairs, 27 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 3333. Up to 427 conditions per place. [2024-06-04 14:06:32,359 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 102 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-04 14:06:32,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 121 transitions, 1200 flow [2024-06-04 14:06:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-04 14:06:32,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 14:06:32,360 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 916 flow. Second operand 8 states and 86 transitions. [2024-06-04 14:06:32,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 121 transitions, 1200 flow [2024-06-04 14:06:32,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 1156 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:06:32,384 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 926 flow [2024-06-04 14:06:32,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2024-06-04 14:06:32,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-04 14:06:32,385 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 926 flow [2024-06-04 14:06:32,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:32,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:32,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:06:32,386 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:32,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1013321438, now seen corresponding path program 2 times [2024-06-04 14:06:32,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:32,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908010588] [2024-06-04 14:06:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:32,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:33,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:33,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908010588] [2024-06-04 14:06:33,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908010588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:33,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:33,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3977850] [2024-06-04 14:06:33,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:33,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:33,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:33,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:33,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 926 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:33,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:33,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:33,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:33,355 INFO L124 PetriNetUnfolderBase]: 304/542 cut-off events. [2024-06-04 14:06:33,355 INFO L125 PetriNetUnfolderBase]: For 19791/19791 co-relation queries the response was YES. [2024-06-04 14:06:33,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 542 events. 304/542 cut-off events. For 19791/19791 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2158 event pairs, 45 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3400. Up to 461 conditions per place. [2024-06-04 14:06:33,359 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 97 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-06-04 14:06:33,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 121 transitions, 1214 flow [2024-06-04 14:06:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:33,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-04 14:06:33,383 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 926 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:33,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 121 transitions, 1214 flow [2024-06-04 14:06:33,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 121 transitions, 1170 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:33,412 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 949 flow [2024-06-04 14:06:33,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2024-06-04 14:06:33,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-04 14:06:33,413 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 949 flow [2024-06-04 14:06:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:33,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:33,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:06:33,414 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:33,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:33,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1013321283, now seen corresponding path program 1 times [2024-06-04 14:06:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224610568] [2024-06-04 14:06:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:33,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:34,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:34,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224610568] [2024-06-04 14:06:34,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224610568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:34,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:34,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799758695] [2024-06-04 14:06:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:34,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:34,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:34,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:34,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:34,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:34,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:34,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:34,707 INFO L124 PetriNetUnfolderBase]: 355/631 cut-off events. [2024-06-04 14:06:34,707 INFO L125 PetriNetUnfolderBase]: For 20823/20823 co-relation queries the response was YES. [2024-06-04 14:06:34,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 631 events. 355/631 cut-off events. For 20823/20823 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2644 event pairs, 57 based on Foata normal form. 1/632 useless extension candidates. Maximal degree in co-relation 3905. Up to 512 conditions per place. [2024-06-04 14:06:34,712 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 34 changer transitions 0/146 dead transitions. [2024-06-04 14:06:34,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 1564 flow [2024-06-04 14:06:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:06:34,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:06:34,714 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 949 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:06:34,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 1564 flow [2024-06-04 14:06:34,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 146 transitions, 1477 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:34,740 INFO L231 Difference]: Finished difference. Result has 132 places, 131 transitions, 1272 flow [2024-06-04 14:06:34,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1272, PETRI_PLACES=132, PETRI_TRANSITIONS=131} [2024-06-04 14:06:34,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-04 14:06:34,741 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 131 transitions, 1272 flow [2024-06-04 14:06:34,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:34,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:34,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:34,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:06:34,741 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:34,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash 342729985, now seen corresponding path program 2 times [2024-06-04 14:06:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433019546] [2024-06-04 14:06:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:35,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:35,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433019546] [2024-06-04 14:06:35,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433019546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:35,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:35,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:35,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776327584] [2024-06-04 14:06:35,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:35,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:35,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:35,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:35,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 131 transitions, 1272 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:35,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:35,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:35,874 INFO L124 PetriNetUnfolderBase]: 358/636 cut-off events. [2024-06-04 14:06:35,874 INFO L125 PetriNetUnfolderBase]: For 22056/22056 co-relation queries the response was YES. [2024-06-04 14:06:35,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4152 conditions, 636 events. 358/636 cut-off events. For 22056/22056 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2663 event pairs, 48 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 4083. Up to 517 conditions per place. [2024-06-04 14:06:35,879 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 35 changer transitions 0/150 dead transitions. [2024-06-04 14:06:35,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 150 transitions, 1682 flow [2024-06-04 14:06:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:06:35,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 14:06:35,880 INFO L175 Difference]: Start difference. First operand has 132 places, 131 transitions, 1272 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:06:35,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 150 transitions, 1682 flow [2024-06-04 14:06:35,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 150 transitions, 1624 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:35,916 INFO L231 Difference]: Finished difference. Result has 140 places, 134 transitions, 1367 flow [2024-06-04 14:06:35,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=140, PETRI_TRANSITIONS=134} [2024-06-04 14:06:35,917 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 14:06:35,917 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 1367 flow [2024-06-04 14:06:35,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:35,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:06:35,918 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:35,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1306464836, now seen corresponding path program 3 times [2024-06-04 14:06:35,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:35,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971262299] [2024-06-04 14:06:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:36,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:36,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971262299] [2024-06-04 14:06:36,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971262299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:36,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:36,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142986722] [2024-06-04 14:06:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:36,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:36,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:36,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:36,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 134 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:36,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:36,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:36,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:36,829 INFO L124 PetriNetUnfolderBase]: 366/652 cut-off events. [2024-06-04 14:06:36,829 INFO L125 PetriNetUnfolderBase]: For 24174/24174 co-relation queries the response was YES. [2024-06-04 14:06:36,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4291 conditions, 652 events. 366/652 cut-off events. For 24174/24174 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2760 event pairs, 52 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 4219. Up to 545 conditions per place. [2024-06-04 14:06:36,834 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 27 changer transitions 0/152 dead transitions. [2024-06-04 14:06:36,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 152 transitions, 1739 flow [2024-06-04 14:06:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:06:36,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 14:06:36,835 INFO L175 Difference]: Start difference. First operand has 140 places, 134 transitions, 1367 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:06:36,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 152 transitions, 1739 flow [2024-06-04 14:06:36,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 152 transitions, 1596 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:36,876 INFO L231 Difference]: Finished difference. Result has 142 places, 136 transitions, 1310 flow [2024-06-04 14:06:36,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1310, PETRI_PLACES=142, PETRI_TRANSITIONS=136} [2024-06-04 14:06:36,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 14:06:36,877 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 136 transitions, 1310 flow [2024-06-04 14:06:36,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:36,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:36,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:36,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:06:36,878 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:36,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1575327222, now seen corresponding path program 4 times [2024-06-04 14:06:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:36,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441514405] [2024-06-04 14:06:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:37,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:37,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441514405] [2024-06-04 14:06:37,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441514405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:37,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:37,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:37,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753380313] [2024-06-04 14:06:37,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:37,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:37,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:37,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:37,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 136 transitions, 1310 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:37,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:37,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:37,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:37,968 INFO L124 PetriNetUnfolderBase]: 387/693 cut-off events. [2024-06-04 14:06:37,968 INFO L125 PetriNetUnfolderBase]: For 25670/25670 co-relation queries the response was YES. [2024-06-04 14:06:37,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 693 events. 387/693 cut-off events. For 25670/25670 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3026 event pairs, 53 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 4319. Up to 565 conditions per place. [2024-06-04 14:06:37,973 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 130 selfloop transitions, 29 changer transitions 0/161 dead transitions. [2024-06-04 14:06:37,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 161 transitions, 1761 flow [2024-06-04 14:06:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:06:37,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 14:06:37,974 INFO L175 Difference]: Start difference. First operand has 142 places, 136 transitions, 1310 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:06:37,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 161 transitions, 1761 flow [2024-06-04 14:06:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 161 transitions, 1689 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:38,034 INFO L231 Difference]: Finished difference. Result has 148 places, 143 transitions, 1409 flow [2024-06-04 14:06:38,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1409, PETRI_PLACES=148, PETRI_TRANSITIONS=143} [2024-06-04 14:06:38,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-04 14:06:38,035 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 143 transitions, 1409 flow [2024-06-04 14:06:38,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:38,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:38,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:38,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:06:38,036 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:38,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1345642487, now seen corresponding path program 3 times [2024-06-04 14:06:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:38,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102742903] [2024-06-04 14:06:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102742903] [2024-06-04 14:06:38,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102742903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:38,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:38,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922300885] [2024-06-04 14:06:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:38,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:38,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:38,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 143 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:38,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:38,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:39,088 INFO L124 PetriNetUnfolderBase]: 412/735 cut-off events. [2024-06-04 14:06:39,088 INFO L125 PetriNetUnfolderBase]: For 26315/26315 co-relation queries the response was YES. [2024-06-04 14:06:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 735 events. 412/735 cut-off events. For 26315/26315 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3252 event pairs, 63 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 4638. Up to 606 conditions per place. [2024-06-04 14:06:39,093 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 39 changer transitions 0/173 dead transitions. [2024-06-04 14:06:39,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 173 transitions, 1980 flow [2024-06-04 14:06:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:06:39,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 14:06:39,115 INFO L175 Difference]: Start difference. First operand has 148 places, 143 transitions, 1409 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:06:39,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 173 transitions, 1980 flow [2024-06-04 14:06:39,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 173 transitions, 1921 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:39,167 INFO L231 Difference]: Finished difference. Result has 155 places, 157 transitions, 1641 flow [2024-06-04 14:06:39,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1641, PETRI_PLACES=155, PETRI_TRANSITIONS=157} [2024-06-04 14:06:39,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-04 14:06:39,168 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 157 transitions, 1641 flow [2024-06-04 14:06:39,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:39,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:39,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:39,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:06:39,168 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:39,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1345642332, now seen corresponding path program 5 times [2024-06-04 14:06:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608510020] [2024-06-04 14:06:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:39,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608510020] [2024-06-04 14:06:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608510020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:39,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:39,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052511927] [2024-06-04 14:06:39,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:39,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:39,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:39,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 157 transitions, 1641 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:39,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:39,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:39,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:40,165 INFO L124 PetriNetUnfolderBase]: 416/743 cut-off events. [2024-06-04 14:06:40,166 INFO L125 PetriNetUnfolderBase]: For 28845/28845 co-relation queries the response was YES. [2024-06-04 14:06:40,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4870 conditions, 743 events. 416/743 cut-off events. For 28845/28845 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3298 event pairs, 63 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4792. Up to 617 conditions per place. [2024-06-04 14:06:40,171 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 36 changer transitions 0/174 dead transitions. [2024-06-04 14:06:40,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 174 transitions, 2066 flow [2024-06-04 14:06:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:06:40,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:06:40,173 INFO L175 Difference]: Start difference. First operand has 155 places, 157 transitions, 1641 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:06:40,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 174 transitions, 2066 flow [2024-06-04 14:06:40,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 174 transitions, 1991 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-04 14:06:40,229 INFO L231 Difference]: Finished difference. Result has 161 places, 158 transitions, 1667 flow [2024-06-04 14:06:40,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1667, PETRI_PLACES=161, PETRI_TRANSITIONS=158} [2024-06-04 14:06:40,230 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-04 14:06:40,230 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 158 transitions, 1667 flow [2024-06-04 14:06:40,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:40,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:40,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:40,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:06:40,230 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:40,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:40,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1703524552, now seen corresponding path program 6 times [2024-06-04 14:06:40,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:40,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459948904] [2024-06-04 14:06:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:40,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:40,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459948904] [2024-06-04 14:06:40,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459948904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:40,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:40,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934449503] [2024-06-04 14:06:40,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:40,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:40,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:40,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 158 transitions, 1667 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:40,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:40,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:40,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:41,138 INFO L124 PetriNetUnfolderBase]: 426/763 cut-off events. [2024-06-04 14:06:41,139 INFO L125 PetriNetUnfolderBase]: For 30501/30501 co-relation queries the response was YES. [2024-06-04 14:06:41,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4995 conditions, 763 events. 426/763 cut-off events. For 30501/30501 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3439 event pairs, 60 based on Foata normal form. 2/765 useless extension candidates. Maximal degree in co-relation 4915. Up to 625 conditions per place. [2024-06-04 14:06:41,143 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 37 changer transitions 0/175 dead transitions. [2024-06-04 14:06:41,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 175 transitions, 2093 flow [2024-06-04 14:06:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:06:41,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 14:06:41,145 INFO L175 Difference]: Start difference. First operand has 161 places, 158 transitions, 1667 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:06:41,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 175 transitions, 2093 flow [2024-06-04 14:06:41,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 175 transitions, 2004 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:41,204 INFO L231 Difference]: Finished difference. Result has 164 places, 161 transitions, 1703 flow [2024-06-04 14:06:41,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1703, PETRI_PLACES=164, PETRI_TRANSITIONS=161} [2024-06-04 14:06:41,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-04 14:06:41,205 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 161 transitions, 1703 flow [2024-06-04 14:06:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:41,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:41,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:41,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:06:41,206 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:41,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1351154814, now seen corresponding path program 1 times [2024-06-04 14:06:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575615298] [2024-06-04 14:06:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:42,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:42,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575615298] [2024-06-04 14:06:42,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575615298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:42,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:42,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:42,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499628282] [2024-06-04 14:06:42,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:42,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:42,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:42,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:42,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 161 transitions, 1703 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:42,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:42,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:42,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:43,024 INFO L124 PetriNetUnfolderBase]: 438/783 cut-off events. [2024-06-04 14:06:43,025 INFO L125 PetriNetUnfolderBase]: For 31643/31643 co-relation queries the response was YES. [2024-06-04 14:06:43,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 783 events. 438/783 cut-off events. For 31643/31643 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3572 event pairs, 62 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 5037. Up to 635 conditions per place. [2024-06-04 14:06:43,031 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 40 changer transitions 0/181 dead transitions. [2024-06-04 14:06:43,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 181 transitions, 2161 flow [2024-06-04 14:06:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:06:43,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:06:43,032 INFO L175 Difference]: Start difference. First operand has 164 places, 161 transitions, 1703 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:06:43,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 181 transitions, 2161 flow [2024-06-04 14:06:43,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 181 transitions, 2078 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:43,112 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1762 flow [2024-06-04 14:06:43,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1762, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-06-04 14:06:43,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-04 14:06:43,112 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1762 flow [2024-06-04 14:06:43,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:43,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:43,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:43,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:06:43,113 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:43,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1351356624, now seen corresponding path program 2 times [2024-06-04 14:06:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175696278] [2024-06-04 14:06:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:43,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:44,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175696278] [2024-06-04 14:06:44,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175696278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:44,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:44,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:44,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965842564] [2024-06-04 14:06:44,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:44,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:44,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:44,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1762 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:44,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:44,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:44,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:44,674 INFO L124 PetriNetUnfolderBase]: 479/850 cut-off events. [2024-06-04 14:06:44,674 INFO L125 PetriNetUnfolderBase]: For 37492/37492 co-relation queries the response was YES. [2024-06-04 14:06:44,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5702 conditions, 850 events. 479/850 cut-off events. For 37492/37492 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3919 event pairs, 65 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 5618. Up to 638 conditions per place. [2024-06-04 14:06:44,681 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 52 changer transitions 0/194 dead transitions. [2024-06-04 14:06:44,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 194 transitions, 2530 flow [2024-06-04 14:06:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:06:44,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 14:06:44,682 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1762 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:06:44,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 194 transitions, 2530 flow [2024-06-04 14:06:44,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 194 transitions, 2426 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:44,784 INFO L231 Difference]: Finished difference. Result has 176 places, 176 transitions, 1939 flow [2024-06-04 14:06:44,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=176, PETRI_TRANSITIONS=176} [2024-06-04 14:06:44,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-04 14:06:44,785 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 176 transitions, 1939 flow [2024-06-04 14:06:44,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:44,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:44,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:44,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:06:44,785 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:44,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1351364064, now seen corresponding path program 3 times [2024-06-04 14:06:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196208007] [2024-06-04 14:06:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:44,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:45,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:45,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196208007] [2024-06-04 14:06:45,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196208007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:45,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:45,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:45,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476568951] [2024-06-04 14:06:45,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:45,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:45,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:45,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:45,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 176 transitions, 1939 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:45,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:45,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:45,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:46,327 INFO L124 PetriNetUnfolderBase]: 490/868 cut-off events. [2024-06-04 14:06:46,328 INFO L125 PetriNetUnfolderBase]: For 40798/40798 co-relation queries the response was YES. [2024-06-04 14:06:46,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6010 conditions, 868 events. 490/868 cut-off events. For 40798/40798 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4037 event pairs, 60 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 5923. Up to 623 conditions per place. [2024-06-04 14:06:46,334 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 139 selfloop transitions, 56 changer transitions 0/197 dead transitions. [2024-06-04 14:06:46,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 197 transitions, 2645 flow [2024-06-04 14:06:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:06:46,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 14:06:46,336 INFO L175 Difference]: Start difference. First operand has 176 places, 176 transitions, 1939 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:06:46,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 197 transitions, 2645 flow [2024-06-04 14:06:46,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 197 transitions, 2533 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:46,425 INFO L231 Difference]: Finished difference. Result has 182 places, 178 transitions, 2002 flow [2024-06-04 14:06:46,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=182, PETRI_TRANSITIONS=178} [2024-06-04 14:06:46,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-04 14:06:46,426 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 178 transitions, 2002 flow [2024-06-04 14:06:46,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:46,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:46,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:46,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:06:46,427 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:46,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1351364343, now seen corresponding path program 1 times [2024-06-04 14:06:46,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:46,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450380523] [2024-06-04 14:06:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:46,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:47,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:47,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450380523] [2024-06-04 14:06:47,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450380523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:47,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:47,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:47,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671528732] [2024-06-04 14:06:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:47,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:47,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:47,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 178 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:47,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:47,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:47,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:48,089 INFO L124 PetriNetUnfolderBase]: 494/875 cut-off events. [2024-06-04 14:06:48,089 INFO L125 PetriNetUnfolderBase]: For 42092/42092 co-relation queries the response was YES. [2024-06-04 14:06:48,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 875 events. 494/875 cut-off events. For 42092/42092 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4059 event pairs, 74 based on Foata normal form. 3/878 useless extension candidates. Maximal degree in co-relation 6076. Up to 722 conditions per place. [2024-06-04 14:06:48,097 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 150 selfloop transitions, 44 changer transitions 0/196 dead transitions. [2024-06-04 14:06:48,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 2510 flow [2024-06-04 14:06:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:06:48,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-04 14:06:48,102 INFO L175 Difference]: Start difference. First operand has 182 places, 178 transitions, 2002 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:06:48,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 2510 flow [2024-06-04 14:06:48,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 196 transitions, 2420 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:48,189 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 2086 flow [2024-06-04 14:06:48,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2086, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2024-06-04 14:06:48,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 14:06:48,190 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 2086 flow [2024-06-04 14:06:48,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:48,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:48,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:48,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:06:48,190 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:48,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:48,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1567437474, now seen corresponding path program 4 times [2024-06-04 14:06:48,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:48,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328805711] [2024-06-04 14:06:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:48,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:49,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:49,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328805711] [2024-06-04 14:06:49,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328805711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:49,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:49,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:49,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202845418] [2024-06-04 14:06:49,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:49,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:49,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:49,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 2086 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:49,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:49,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:49,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:49,689 INFO L124 PetriNetUnfolderBase]: 490/869 cut-off events. [2024-06-04 14:06:49,689 INFO L125 PetriNetUnfolderBase]: For 39902/39902 co-relation queries the response was YES. [2024-06-04 14:06:49,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 869 events. 490/869 cut-off events. For 39902/39902 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4042 event pairs, 72 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 5983. Up to 736 conditions per place. [2024-06-04 14:06:49,696 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 157 selfloop transitions, 39 changer transitions 0/198 dead transitions. [2024-06-04 14:06:49,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 2538 flow [2024-06-04 14:06:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:06:49,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:06:49,697 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 2086 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:06:49,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 2538 flow [2024-06-04 14:06:49,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 198 transitions, 2396 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:49,785 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 2035 flow [2024-06-04 14:06:49,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2035, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2024-06-04 14:06:49,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 14:06:49,786 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 2035 flow [2024-06-04 14:06:49,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:49,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:49,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:49,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:06:49,786 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:49,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1294741434, now seen corresponding path program 7 times [2024-06-04 14:06:49,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:49,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993710104] [2024-06-04 14:06:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:49,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:50,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:50,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993710104] [2024-06-04 14:06:50,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993710104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:50,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:50,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730114879] [2024-06-04 14:06:50,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:50,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:50,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:50,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:50,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:50,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:50,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 2035 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:50,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:50,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:50,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:50,856 INFO L124 PetriNetUnfolderBase]: 494/875 cut-off events. [2024-06-04 14:06:50,856 INFO L125 PetriNetUnfolderBase]: For 41313/41313 co-relation queries the response was YES. [2024-06-04 14:06:50,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6085 conditions, 875 events. 494/875 cut-off events. For 41313/41313 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4061 event pairs, 75 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 5993. Up to 736 conditions per place. [2024-06-04 14:06:50,864 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 154 selfloop transitions, 38 changer transitions 0/194 dead transitions. [2024-06-04 14:06:50,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 194 transitions, 2471 flow [2024-06-04 14:06:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 14:06:50,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 14:06:50,865 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 2035 flow. Second operand 8 states and 89 transitions. [2024-06-04 14:06:50,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 194 transitions, 2471 flow [2024-06-04 14:06:50,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 194 transitions, 2397 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:50,954 INFO L231 Difference]: Finished difference. Result has 194 places, 183 transitions, 2071 flow [2024-06-04 14:06:50,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2071, PETRI_PLACES=194, PETRI_TRANSITIONS=183} [2024-06-04 14:06:50,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-04 14:06:50,955 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 183 transitions, 2071 flow [2024-06-04 14:06:50,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:50,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:50,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:50,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:06:50,956 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:50,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1647574374, now seen corresponding path program 8 times [2024-06-04 14:06:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:50,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462436554] [2024-06-04 14:06:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:50,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:51,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462436554] [2024-06-04 14:06:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462436554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:51,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204756616] [2024-06-04 14:06:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:51,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:51,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:51,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 183 transitions, 2071 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:51,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:51,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:51,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:52,141 INFO L124 PetriNetUnfolderBase]: 498/885 cut-off events. [2024-06-04 14:06:52,141 INFO L125 PetriNetUnfolderBase]: For 43258/43258 co-relation queries the response was YES. [2024-06-04 14:06:52,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6184 conditions, 885 events. 498/885 cut-off events. For 43258/43258 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4169 event pairs, 66 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 6091. Up to 712 conditions per place. [2024-06-04 14:06:52,151 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 155 selfloop transitions, 41 changer transitions 0/198 dead transitions. [2024-06-04 14:06:52,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 198 transitions, 2539 flow [2024-06-04 14:06:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:06:52,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:06:52,152 INFO L175 Difference]: Start difference. First operand has 194 places, 183 transitions, 2071 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:06:52,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 198 transitions, 2539 flow [2024-06-04 14:06:52,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 2439 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:52,304 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 2089 flow [2024-06-04 14:06:52,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2089, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2024-06-04 14:06:52,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 14:06:52,305 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 2089 flow [2024-06-04 14:06:52,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:52,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:52,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:52,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:06:52,306 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:52,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1647570499, now seen corresponding path program 4 times [2024-06-04 14:06:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067266462] [2024-06-04 14:06:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:53,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:53,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067266462] [2024-06-04 14:06:53,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067266462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:53,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:53,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325309078] [2024-06-04 14:06:53,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:53,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:53,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:53,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 2089 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:53,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:53,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:53,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:53,349 INFO L124 PetriNetUnfolderBase]: 496/882 cut-off events. [2024-06-04 14:06:53,350 INFO L125 PetriNetUnfolderBase]: For 40423/40423 co-relation queries the response was YES. [2024-06-04 14:06:53,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 882 events. 496/882 cut-off events. For 40423/40423 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4165 event pairs, 85 based on Foata normal form. 1/883 useless extension candidates. Maximal degree in co-relation 5988. Up to 731 conditions per place. [2024-06-04 14:06:53,357 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 51 changer transitions 0/198 dead transitions. [2024-06-04 14:06:53,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 198 transitions, 2537 flow [2024-06-04 14:06:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 14:06:53,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:06:53,364 INFO L175 Difference]: Start difference. First operand has 196 places, 184 transitions, 2089 flow. Second operand 8 states and 94 transitions. [2024-06-04 14:06:53,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 198 transitions, 2537 flow [2024-06-04 14:06:53,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 198 transitions, 2423 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:53,457 INFO L231 Difference]: Finished difference. Result has 198 places, 184 transitions, 2091 flow [2024-06-04 14:06:53,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2091, PETRI_PLACES=198, PETRI_TRANSITIONS=184} [2024-06-04 14:06:53,458 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-04 14:06:53,458 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 184 transitions, 2091 flow [2024-06-04 14:06:53,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:53,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:53,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:53,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:06:53,459 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:53,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1647570654, now seen corresponding path program 9 times [2024-06-04 14:06:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858273512] [2024-06-04 14:06:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:54,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:54,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858273512] [2024-06-04 14:06:54,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858273512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:54,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:54,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626134419] [2024-06-04 14:06:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:54,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:54,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:54,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:54,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:54,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 184 transitions, 2091 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:54,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:54,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:54,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:54,440 INFO L124 PetriNetUnfolderBase]: 500/890 cut-off events. [2024-06-04 14:06:54,440 INFO L125 PetriNetUnfolderBase]: For 41769/41769 co-relation queries the response was YES. [2024-06-04 14:06:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 890 events. 500/890 cut-off events. For 41769/41769 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4205 event pairs, 87 based on Foata normal form. 2/892 useless extension candidates. Maximal degree in co-relation 6036. Up to 745 conditions per place. [2024-06-04 14:06:54,446 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 45 changer transitions 0/199 dead transitions. [2024-06-04 14:06:54,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 199 transitions, 2563 flow [2024-06-04 14:06:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 14:06:54,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 14:06:54,448 INFO L175 Difference]: Start difference. First operand has 198 places, 184 transitions, 2091 flow. Second operand 8 states and 93 transitions. [2024-06-04 14:06:54,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 199 transitions, 2563 flow [2024-06-04 14:06:54,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 199 transitions, 2390 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:54,547 INFO L231 Difference]: Finished difference. Result has 199 places, 185 transitions, 2044 flow [2024-06-04 14:06:54,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2044, PETRI_PLACES=199, PETRI_TRANSITIONS=185} [2024-06-04 14:06:54,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-04 14:06:54,548 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 185 transitions, 2044 flow [2024-06-04 14:06:54,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:54,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:54,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:54,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:06:54,549 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:54,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:54,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1647420552, now seen corresponding path program 5 times [2024-06-04 14:06:54,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:54,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302626352] [2024-06-04 14:06:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:54,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:55,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:55,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302626352] [2024-06-04 14:06:55,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302626352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:55,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:55,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:55,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091071781] [2024-06-04 14:06:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:55,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:55,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:55,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:55,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 185 transitions, 2044 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:55,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:55,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:55,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:56,024 INFO L124 PetriNetUnfolderBase]: 506/900 cut-off events. [2024-06-04 14:06:56,024 INFO L125 PetriNetUnfolderBase]: For 41735/41735 co-relation queries the response was YES. [2024-06-04 14:06:56,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 900 events. 506/900 cut-off events. For 41735/41735 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4268 event pairs, 74 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 6068. Up to 745 conditions per place. [2024-06-04 14:06:56,031 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 49 changer transitions 0/203 dead transitions. [2024-06-04 14:06:56,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 2554 flow [2024-06-04 14:06:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:06:56,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:06:56,033 INFO L175 Difference]: Start difference. First operand has 199 places, 185 transitions, 2044 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:06:56,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 2554 flow [2024-06-04 14:06:56,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 203 transitions, 2444 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:56,160 INFO L231 Difference]: Finished difference. Result has 202 places, 187 transitions, 2088 flow [2024-06-04 14:06:56,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2088, PETRI_PLACES=202, PETRI_TRANSITIONS=187} [2024-06-04 14:06:56,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 14:06:56,160 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 187 transitions, 2088 flow [2024-06-04 14:06:56,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:56,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:56,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:56,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:06:56,161 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:56,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1642064124, now seen corresponding path program 10 times [2024-06-04 14:06:56,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:56,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205062475] [2024-06-04 14:06:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:56,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:56,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205062475] [2024-06-04 14:06:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205062475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:56,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:56,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762018815] [2024-06-04 14:06:56,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:56,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:56,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:56,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 187 transitions, 2088 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:56,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:56,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:56,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:57,097 INFO L124 PetriNetUnfolderBase]: 510/908 cut-off events. [2024-06-04 14:06:57,097 INFO L125 PetriNetUnfolderBase]: For 41815/41815 co-relation queries the response was YES. [2024-06-04 14:06:57,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 908 events. 510/908 cut-off events. For 41815/41815 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4320 event pairs, 58 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 6149. Up to 738 conditions per place. [2024-06-04 14:06:57,104 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 151 selfloop transitions, 47 changer transitions 0/200 dead transitions. [2024-06-04 14:06:57,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 200 transitions, 2546 flow [2024-06-04 14:06:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 14:06:57,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 14:06:57,106 INFO L175 Difference]: Start difference. First operand has 202 places, 187 transitions, 2088 flow. Second operand 8 states and 90 transitions. [2024-06-04 14:06:57,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 200 transitions, 2546 flow [2024-06-04 14:06:57,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 200 transitions, 2413 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:57,217 INFO L231 Difference]: Finished difference. Result has 202 places, 188 transitions, 2083 flow [2024-06-04 14:06:57,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2083, PETRI_PLACES=202, PETRI_TRANSITIONS=188} [2024-06-04 14:06:57,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 14:06:57,217 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 188 transitions, 2083 flow [2024-06-04 14:06:57,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:57,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:57,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:57,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:06:57,218 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:57,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:57,218 INFO L85 PathProgramCache]: Analyzing trace with hash 827792072, now seen corresponding path program 6 times [2024-06-04 14:06:57,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:57,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001942862] [2024-06-04 14:06:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:57,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001942862] [2024-06-04 14:06:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001942862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970385616] [2024-06-04 14:06:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:58,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:58,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:58,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:58,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 188 transitions, 2083 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:58,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:58,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:58,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:58,669 INFO L124 PetriNetUnfolderBase]: 516/918 cut-off events. [2024-06-04 14:06:58,670 INFO L125 PetriNetUnfolderBase]: For 41985/41985 co-relation queries the response was YES. [2024-06-04 14:06:58,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 918 events. 516/918 cut-off events. For 41985/41985 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4366 event pairs, 61 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 6201. Up to 728 conditions per place. [2024-06-04 14:06:58,678 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 53 changer transitions 0/204 dead transitions. [2024-06-04 14:06:58,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 204 transitions, 2583 flow [2024-06-04 14:06:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:06:58,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 14:06:58,681 INFO L175 Difference]: Start difference. First operand has 202 places, 188 transitions, 2083 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:06:58,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 204 transitions, 2583 flow [2024-06-04 14:06:58,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 204 transitions, 2467 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:58,786 INFO L231 Difference]: Finished difference. Result has 205 places, 190 transitions, 2133 flow [2024-06-04 14:06:58,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2133, PETRI_PLACES=205, PETRI_TRANSITIONS=190} [2024-06-04 14:06:58,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-04 14:06:58,787 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 190 transitions, 2133 flow [2024-06-04 14:06:58,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:58,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:58,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:58,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:06:58,787 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:58,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 828001322, now seen corresponding path program 7 times [2024-06-04 14:06:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706505996] [2024-06-04 14:06:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:59,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:59,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706505996] [2024-06-04 14:06:59,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706505996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:59,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:59,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909409844] [2024-06-04 14:06:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:59,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:59,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:59,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:59,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:59,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:06:59,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 190 transitions, 2133 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:59,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:59,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:06:59,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:00,326 INFO L124 PetriNetUnfolderBase]: 532/944 cut-off events. [2024-06-04 14:07:00,326 INFO L125 PetriNetUnfolderBase]: For 45208/45208 co-relation queries the response was YES. [2024-06-04 14:07:00,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6635 conditions, 944 events. 532/944 cut-off events. For 45208/45208 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4538 event pairs, 57 based on Foata normal form. 2/946 useless extension candidates. Maximal degree in co-relation 6537. Up to 625 conditions per place. [2024-06-04 14:07:00,334 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 83 changer transitions 0/209 dead transitions. [2024-06-04 14:07:00,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 209 transitions, 2805 flow [2024-06-04 14:07:00,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:07:00,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:07:00,335 INFO L175 Difference]: Start difference. First operand has 205 places, 190 transitions, 2133 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:07:00,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 209 transitions, 2805 flow [2024-06-04 14:07:00,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 209 transitions, 2669 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:00,447 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 2280 flow [2024-06-04 14:07:00,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2280, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2024-06-04 14:07:00,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-04 14:07:00,448 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 2280 flow [2024-06-04 14:07:00,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:00,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:00,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:00,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:07:00,448 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:00,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash 828001601, now seen corresponding path program 2 times [2024-06-04 14:07:00,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:00,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003179881] [2024-06-04 14:07:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:00,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003179881] [2024-06-04 14:07:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003179881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:01,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:01,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402086829] [2024-06-04 14:07:01,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:01,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:01,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:01,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 2280 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:01,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:01,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:01,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:02,056 INFO L124 PetriNetUnfolderBase]: 541/959 cut-off events. [2024-06-04 14:07:02,056 INFO L125 PetriNetUnfolderBase]: For 48391/48391 co-relation queries the response was YES. [2024-06-04 14:07:02,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 959 events. 541/959 cut-off events. For 48391/48391 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4599 event pairs, 78 based on Foata normal form. 3/962 useless extension candidates. Maximal degree in co-relation 6788. Up to 764 conditions per place. [2024-06-04 14:07:02,062 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 150 selfloop transitions, 60 changer transitions 0/212 dead transitions. [2024-06-04 14:07:02,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 212 transitions, 2828 flow [2024-06-04 14:07:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:07:02,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 14:07:02,064 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 2280 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:07:02,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 212 transitions, 2828 flow [2024-06-04 14:07:02,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 212 transitions, 2693 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:02,182 INFO L231 Difference]: Finished difference. Result has 211 places, 197 transitions, 2359 flow [2024-06-04 14:07:02,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2359, PETRI_PLACES=211, PETRI_TRANSITIONS=197} [2024-06-04 14:07:02,182 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-04 14:07:02,182 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 197 transitions, 2359 flow [2024-06-04 14:07:02,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:02,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:02,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:02,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:07:02,183 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:02,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:02,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1641856362, now seen corresponding path program 8 times [2024-06-04 14:07:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:02,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423218429] [2024-06-04 14:07:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:02,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:03,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:03,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423218429] [2024-06-04 14:07:03,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423218429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:03,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:03,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764388612] [2024-06-04 14:07:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:03,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:03,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 197 transitions, 2359 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:03,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:03,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:03,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:03,773 INFO L124 PetriNetUnfolderBase]: 537/953 cut-off events. [2024-06-04 14:07:03,774 INFO L125 PetriNetUnfolderBase]: For 43624/43624 co-relation queries the response was YES. [2024-06-04 14:07:03,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6819 conditions, 953 events. 537/953 cut-off events. For 43624/43624 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4578 event pairs, 56 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 6719. Up to 708 conditions per place. [2024-06-04 14:07:03,782 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 66 changer transitions 0/211 dead transitions. [2024-06-04 14:07:03,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 2825 flow [2024-06-04 14:07:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:07:03,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 14:07:03,784 INFO L175 Difference]: Start difference. First operand has 211 places, 197 transitions, 2359 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:07:03,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 2825 flow [2024-06-04 14:07:03,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 211 transitions, 2621 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:03,898 INFO L231 Difference]: Finished difference. Result has 212 places, 197 transitions, 2295 flow [2024-06-04 14:07:03,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2295, PETRI_PLACES=212, PETRI_TRANSITIONS=197} [2024-06-04 14:07:03,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 14:07:03,899 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 197 transitions, 2295 flow [2024-06-04 14:07:03,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:03,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:03,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:03,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:07:03,899 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:03,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1514137336, now seen corresponding path program 11 times [2024-06-04 14:07:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:03,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306245173] [2024-06-04 14:07:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:04,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:04,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306245173] [2024-06-04 14:07:04,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306245173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:04,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:04,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668763448] [2024-06-04 14:07:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:04,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:04,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 197 transitions, 2295 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:04,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:04,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:04,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:04,786 INFO L124 PetriNetUnfolderBase]: 534/946 cut-off events. [2024-06-04 14:07:04,786 INFO L125 PetriNetUnfolderBase]: For 41458/41458 co-relation queries the response was YES. [2024-06-04 14:07:04,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 946 events. 534/946 cut-off events. For 41458/41458 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4524 event pairs, 72 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6537. Up to 758 conditions per place. [2024-06-04 14:07:04,793 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 156 selfloop transitions, 49 changer transitions 0/207 dead transitions. [2024-06-04 14:07:04,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2735 flow [2024-06-04 14:07:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:07:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:07:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:07:04,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:07:04,795 INFO L175 Difference]: Start difference. First operand has 212 places, 197 transitions, 2295 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:07:04,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2735 flow [2024-06-04 14:07:04,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 207 transitions, 2557 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:04,911 INFO L231 Difference]: Finished difference. Result has 211 places, 197 transitions, 2219 flow [2024-06-04 14:07:04,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2219, PETRI_PLACES=211, PETRI_TRANSITIONS=197} [2024-06-04 14:07:04,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-04 14:07:04,912 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 197 transitions, 2219 flow [2024-06-04 14:07:04,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:04,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:04,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:04,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:07:04,912 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:04,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:04,913 INFO L85 PathProgramCache]: Analyzing trace with hash 11077087, now seen corresponding path program 3 times [2024-06-04 14:07:04,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:04,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897898328] [2024-06-04 14:07:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:04,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:06,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:06,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897898328] [2024-06-04 14:07:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897898328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:06,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034453881] [2024-06-04 14:07:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:06,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:06,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:06,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 197 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:06,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:06,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:06,667 INFO L124 PetriNetUnfolderBase]: 532/943 cut-off events. [2024-06-04 14:07:06,667 INFO L125 PetriNetUnfolderBase]: For 38428/38428 co-relation queries the response was YES. [2024-06-04 14:07:06,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 943 events. 532/943 cut-off events. For 38428/38428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4496 event pairs, 96 based on Foata normal form. 1/944 useless extension candidates. Maximal degree in co-relation 6332. Up to 822 conditions per place. [2024-06-04 14:07:06,678 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 41 changer transitions 0/207 dead transitions. [2024-06-04 14:07:06,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2693 flow [2024-06-04 14:07:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:07:06,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:06,680 INFO L175 Difference]: Start difference. First operand has 211 places, 197 transitions, 2219 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:07:06,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2693 flow [2024-06-04 14:07:06,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 207 transitions, 2532 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:06,829 INFO L231 Difference]: Finished difference. Result has 213 places, 199 transitions, 2196 flow [2024-06-04 14:07:06,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2196, PETRI_PLACES=213, PETRI_TRANSITIONS=199} [2024-06-04 14:07:06,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-04 14:07:06,830 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 199 transitions, 2196 flow [2024-06-04 14:07:06,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:06,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:06,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:06,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:07:06,830 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:06,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1689839840, now seen corresponding path program 9 times [2024-06-04 14:07:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887706382] [2024-06-04 14:07:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:07,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887706382] [2024-06-04 14:07:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887706382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:07,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:07,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538823539] [2024-06-04 14:07:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:07,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:08,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:08,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 199 transitions, 2196 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:08,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:08,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:08,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:08,384 INFO L124 PetriNetUnfolderBase]: 558/985 cut-off events. [2024-06-04 14:07:08,385 INFO L125 PetriNetUnfolderBase]: For 47955/47955 co-relation queries the response was YES. [2024-06-04 14:07:08,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 985 events. 558/985 cut-off events. For 47955/47955 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4752 event pairs, 73 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 6861. Up to 755 conditions per place. [2024-06-04 14:07:08,393 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 161 selfloop transitions, 58 changer transitions 0/221 dead transitions. [2024-06-04 14:07:08,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 221 transitions, 3086 flow [2024-06-04 14:07:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:07:08,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 14:07:08,394 INFO L175 Difference]: Start difference. First operand has 213 places, 199 transitions, 2196 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:07:08,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 221 transitions, 3086 flow [2024-06-04 14:07:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 221 transitions, 2926 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:08,517 INFO L231 Difference]: Finished difference. Result has 215 places, 206 transitions, 2350 flow [2024-06-04 14:07:08,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2350, PETRI_PLACES=215, PETRI_TRANSITIONS=206} [2024-06-04 14:07:08,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 14:07:08,518 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 206 transitions, 2350 flow [2024-06-04 14:07:08,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:08,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:08,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:07:08,519 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:08,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1513922134, now seen corresponding path program 10 times [2024-06-04 14:07:08,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:08,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958221884] [2024-06-04 14:07:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:08,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:09,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958221884] [2024-06-04 14:07:09,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958221884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:09,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:09,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:09,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426586255] [2024-06-04 14:07:09,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:09,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:09,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 206 transitions, 2350 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:09,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:09,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:09,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:10,377 INFO L124 PetriNetUnfolderBase]: 564/995 cut-off events. [2024-06-04 14:07:10,377 INFO L125 PetriNetUnfolderBase]: For 48985/48985 co-relation queries the response was YES. [2024-06-04 14:07:10,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 995 events. 564/995 cut-off events. For 48985/48985 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4810 event pairs, 72 based on Foata normal form. 1/996 useless extension candidates. Maximal degree in co-relation 7013. Up to 776 conditions per place. [2024-06-04 14:07:10,387 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 63 changer transitions 0/227 dead transitions. [2024-06-04 14:07:10,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 227 transitions, 3126 flow [2024-06-04 14:07:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:07:10,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:07:10,391 INFO L175 Difference]: Start difference. First operand has 215 places, 206 transitions, 2350 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:07:10,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 227 transitions, 3126 flow [2024-06-04 14:07:10,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 227 transitions, 2928 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-04 14:07:10,573 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 2464 flow [2024-06-04 14:07:10,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2464, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-06-04 14:07:10,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 14:07:10,574 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 2464 flow [2024-06-04 14:07:10,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:10,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:10,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:10,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:07:10,575 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:10,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash 442157338, now seen corresponding path program 11 times [2024-06-04 14:07:10,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:10,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901245158] [2024-06-04 14:07:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:11,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:11,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901245158] [2024-06-04 14:07:11,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901245158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:11,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:11,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:11,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882025302] [2024-06-04 14:07:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:11,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:11,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:11,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:11,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 2464 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:11,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:11,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:11,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:12,341 INFO L124 PetriNetUnfolderBase]: 578/1018 cut-off events. [2024-06-04 14:07:12,341 INFO L125 PetriNetUnfolderBase]: For 55743/55743 co-relation queries the response was YES. [2024-06-04 14:07:12,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7554 conditions, 1018 events. 578/1018 cut-off events. For 55743/55743 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4931 event pairs, 103 based on Foata normal form. 3/1021 useless extension candidates. Maximal degree in co-relation 7448. Up to 432 conditions per place. [2024-06-04 14:07:12,348 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 94 changer transitions 0/234 dead transitions. [2024-06-04 14:07:12,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 234 transitions, 3387 flow [2024-06-04 14:07:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 14:07:12,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 14:07:12,349 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 2464 flow. Second operand 9 states and 109 transitions. [2024-06-04 14:07:12,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 234 transitions, 3387 flow [2024-06-04 14:07:12,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 234 transitions, 3149 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:12,466 INFO L231 Difference]: Finished difference. Result has 225 places, 219 transitions, 2592 flow [2024-06-04 14:07:12,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2592, PETRI_PLACES=225, PETRI_TRANSITIONS=219} [2024-06-04 14:07:12,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 14:07:12,466 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 219 transitions, 2592 flow [2024-06-04 14:07:12,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:12,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:12,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:12,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:07:12,467 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:12,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1248224854, now seen corresponding path program 12 times [2024-06-04 14:07:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594148465] [2024-06-04 14:07:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:13,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:13,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594148465] [2024-06-04 14:07:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594148465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:13,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:13,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277825016] [2024-06-04 14:07:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:13,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:13,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:13,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:13,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 219 transitions, 2592 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:13,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:13,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:13,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:13,883 INFO L124 PetriNetUnfolderBase]: 580/1022 cut-off events. [2024-06-04 14:07:13,883 INFO L125 PetriNetUnfolderBase]: For 55115/55115 co-relation queries the response was YES. [2024-06-04 14:07:13,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 1022 events. 580/1022 cut-off events. For 55115/55115 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4963 event pairs, 172 based on Foata normal form. 4/1026 useless extension candidates. Maximal degree in co-relation 7414. Up to 959 conditions per place. [2024-06-04 14:07:13,892 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 22 changer transitions 0/232 dead transitions. [2024-06-04 14:07:13,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 232 transitions, 3264 flow [2024-06-04 14:07:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:07:13,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 14:07:13,893 INFO L175 Difference]: Start difference. First operand has 225 places, 219 transitions, 2592 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:07:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 232 transitions, 3264 flow [2024-06-04 14:07:14,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 232 transitions, 3156 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 14:07:14,014 INFO L231 Difference]: Finished difference. Result has 231 places, 221 transitions, 2603 flow [2024-06-04 14:07:14,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2603, PETRI_PLACES=231, PETRI_TRANSITIONS=221} [2024-06-04 14:07:14,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 14:07:14,015 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 221 transitions, 2603 flow [2024-06-04 14:07:14,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:14,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:14,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:14,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:07:14,015 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:14,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:14,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1248224575, now seen corresponding path program 4 times [2024-06-04 14:07:14,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:14,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122068061] [2024-06-04 14:07:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:14,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122068061] [2024-06-04 14:07:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122068061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:15,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:15,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:15,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731734971] [2024-06-04 14:07:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:15,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:15,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:15,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:15,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:15,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:15,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 221 transitions, 2603 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:15,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:15,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:15,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:15,471 INFO L124 PetriNetUnfolderBase]: 578/1019 cut-off events. [2024-06-04 14:07:15,471 INFO L125 PetriNetUnfolderBase]: For 48742/48742 co-relation queries the response was YES. [2024-06-04 14:07:15,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7411 conditions, 1019 events. 578/1019 cut-off events. For 48742/48742 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4947 event pairs, 170 based on Foata normal form. 1/1020 useless extension candidates. Maximal degree in co-relation 7300. Up to 983 conditions per place. [2024-06-04 14:07:15,480 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 20 changer transitions 0/230 dead transitions. [2024-06-04 14:07:15,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 230 transitions, 3079 flow [2024-06-04 14:07:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-04 14:07:15,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-04 14:07:15,481 INFO L175 Difference]: Start difference. First operand has 231 places, 221 transitions, 2603 flow. Second operand 10 states and 98 transitions. [2024-06-04 14:07:15,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 230 transitions, 3079 flow [2024-06-04 14:07:15,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 230 transitions, 2996 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:15,643 INFO L231 Difference]: Finished difference. Result has 234 places, 221 transitions, 2568 flow [2024-06-04 14:07:15,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2568, PETRI_PLACES=234, PETRI_TRANSITIONS=221} [2024-06-04 14:07:15,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 14:07:15,644 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 221 transitions, 2568 flow [2024-06-04 14:07:15,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:15,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:15,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:15,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:07:15,644 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:15,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash -205074522, now seen corresponding path program 13 times [2024-06-04 14:07:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306031946] [2024-06-04 14:07:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306031946] [2024-06-04 14:07:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306031946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:16,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:16,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873241817] [2024-06-04 14:07:16,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:16,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:16,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:16,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:16,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:16,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 221 transitions, 2568 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:16,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:16,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:16,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:16,940 INFO L124 PetriNetUnfolderBase]: 599/1053 cut-off events. [2024-06-04 14:07:16,940 INFO L125 PetriNetUnfolderBase]: For 58934/58934 co-relation queries the response was YES. [2024-06-04 14:07:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7930 conditions, 1053 events. 599/1053 cut-off events. For 58934/58934 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5132 event pairs, 171 based on Foata normal form. 2/1055 useless extension candidates. Maximal degree in co-relation 7818. Up to 941 conditions per place. [2024-06-04 14:07:16,948 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 31 changer transitions 0/242 dead transitions. [2024-06-04 14:07:16,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 242 transitions, 3550 flow [2024-06-04 14:07:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:07:16,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:07:16,949 INFO L175 Difference]: Start difference. First operand has 234 places, 221 transitions, 2568 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:07:16,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 242 transitions, 3550 flow [2024-06-04 14:07:17,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 242 transitions, 3500 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:07:17,086 INFO L231 Difference]: Finished difference. Result has 235 places, 228 transitions, 2817 flow [2024-06-04 14:07:17,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2817, PETRI_PLACES=235, PETRI_TRANSITIONS=228} [2024-06-04 14:07:17,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-04 14:07:17,087 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 228 transitions, 2817 flow [2024-06-04 14:07:17,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:17,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:17,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:07:17,087 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:17,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1506779734, now seen corresponding path program 14 times [2024-06-04 14:07:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:17,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513688353] [2024-06-04 14:07:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513688353] [2024-06-04 14:07:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513688353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:17,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828355198] [2024-06-04 14:07:17,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:17,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:17,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:17,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:17,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:17,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 228 transitions, 2817 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:17,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:17,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:17,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:18,375 INFO L124 PetriNetUnfolderBase]: 595/1047 cut-off events. [2024-06-04 14:07:18,376 INFO L125 PetriNetUnfolderBase]: For 56110/56110 co-relation queries the response was YES. [2024-06-04 14:07:18,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7863 conditions, 1047 events. 595/1047 cut-off events. For 56110/56110 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5111 event pairs, 172 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7749. Up to 940 conditions per place. [2024-06-04 14:07:18,385 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 32 changer transitions 0/241 dead transitions. [2024-06-04 14:07:18,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 241 transitions, 3493 flow [2024-06-04 14:07:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:07:18,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 14:07:18,386 INFO L175 Difference]: Start difference. First operand has 235 places, 228 transitions, 2817 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:07:18,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 241 transitions, 3493 flow [2024-06-04 14:07:18,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 241 transitions, 3316 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-04 14:07:18,540 INFO L231 Difference]: Finished difference. Result has 241 places, 229 transitions, 2739 flow [2024-06-04 14:07:18,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2739, PETRI_PLACES=241, PETRI_TRANSITIONS=229} [2024-06-04 14:07:18,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-04 14:07:18,541 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 229 transitions, 2739 flow [2024-06-04 14:07:18,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:18,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:18,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:18,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:07:18,541 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:18,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:18,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1254476267, now seen corresponding path program 1 times [2024-06-04 14:07:18,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:18,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692399239] [2024-06-04 14:07:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:18,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:19,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:19,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692399239] [2024-06-04 14:07:19,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692399239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:19,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:19,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026264504] [2024-06-04 14:07:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:19,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:19,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:19,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:19,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 229 transitions, 2739 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:19,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:19,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:19,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:19,548 INFO L124 PetriNetUnfolderBase]: 616/1090 cut-off events. [2024-06-04 14:07:19,548 INFO L125 PetriNetUnfolderBase]: For 56689/56689 co-relation queries the response was YES. [2024-06-04 14:07:19,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7927 conditions, 1090 events. 616/1090 cut-off events. For 56689/56689 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5433 event pairs, 100 based on Foata normal form. 2/1092 useless extension candidates. Maximal degree in co-relation 7811. Up to 921 conditions per place. [2024-06-04 14:07:19,558 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 34 changer transitions 0/252 dead transitions. [2024-06-04 14:07:19,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 252 transitions, 3340 flow [2024-06-04 14:07:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:07:19,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:07:19,559 INFO L175 Difference]: Start difference. First operand has 241 places, 229 transitions, 2739 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:07:19,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 252 transitions, 3340 flow [2024-06-04 14:07:19,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 252 transitions, 3233 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:19,766 INFO L231 Difference]: Finished difference. Result has 245 places, 234 transitions, 2773 flow [2024-06-04 14:07:19,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2773, PETRI_PLACES=245, PETRI_TRANSITIONS=234} [2024-06-04 14:07:19,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 14:07:19,767 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 234 transitions, 2773 flow [2024-06-04 14:07:19,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:19,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:19,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:19,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:07:19,767 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:19,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1762903255, now seen corresponding path program 2 times [2024-06-04 14:07:19,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624420355] [2024-06-04 14:07:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624420355] [2024-06-04 14:07:20,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624420355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:20,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:20,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:20,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744168810] [2024-06-04 14:07:20,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:20,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:20,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:20,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:20,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:20,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 234 transitions, 2773 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:20,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:20,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:20,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:20,796 INFO L124 PetriNetUnfolderBase]: 633/1127 cut-off events. [2024-06-04 14:07:20,796 INFO L125 PetriNetUnfolderBase]: For 58908/58908 co-relation queries the response was YES. [2024-06-04 14:07:20,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 1127 events. 633/1127 cut-off events. For 58908/58908 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5735 event pairs, 95 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 7989. Up to 916 conditions per place. [2024-06-04 14:07:20,807 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 215 selfloop transitions, 38 changer transitions 0/255 dead transitions. [2024-06-04 14:07:20,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 255 transitions, 3367 flow [2024-06-04 14:07:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:07:20,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:07:20,808 INFO L175 Difference]: Start difference. First operand has 245 places, 234 transitions, 2773 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:07:20,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 255 transitions, 3367 flow [2024-06-04 14:07:20,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 255 transitions, 3293 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 14:07:21,001 INFO L231 Difference]: Finished difference. Result has 253 places, 238 transitions, 2855 flow [2024-06-04 14:07:21,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2855, PETRI_PLACES=253, PETRI_TRANSITIONS=238} [2024-06-04 14:07:21,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-04 14:07:21,011 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 238 transitions, 2855 flow [2024-06-04 14:07:21,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:21,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:21,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:07:21,012 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:21,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1208751227, now seen corresponding path program 1 times [2024-06-04 14:07:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:21,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611938603] [2024-06-04 14:07:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:22,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:22,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611938603] [2024-06-04 14:07:22,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611938603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:22,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:22,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:22,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376437932] [2024-06-04 14:07:22,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:22,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:22,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:22,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:22,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 238 transitions, 2855 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:22,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:22,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:22,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:22,887 INFO L124 PetriNetUnfolderBase]: 642/1142 cut-off events. [2024-06-04 14:07:22,887 INFO L125 PetriNetUnfolderBase]: For 58491/58491 co-relation queries the response was YES. [2024-06-04 14:07:22,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8332 conditions, 1142 events. 642/1142 cut-off events. For 58491/58491 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5810 event pairs, 109 based on Foata normal form. 1/1143 useless extension candidates. Maximal degree in co-relation 8209. Up to 991 conditions per place. [2024-06-04 14:07:22,898 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 210 selfloop transitions, 48 changer transitions 0/260 dead transitions. [2024-06-04 14:07:22,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 260 transitions, 3549 flow [2024-06-04 14:07:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:07:22,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:07:22,899 INFO L175 Difference]: Start difference. First operand has 253 places, 238 transitions, 2855 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:07:22,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 260 transitions, 3549 flow [2024-06-04 14:07:23,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 260 transitions, 3467 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 14:07:23,077 INFO L231 Difference]: Finished difference. Result has 261 places, 245 transitions, 3035 flow [2024-06-04 14:07:23,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3035, PETRI_PLACES=261, PETRI_TRANSITIONS=245} [2024-06-04 14:07:23,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-04 14:07:23,078 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 245 transitions, 3035 flow [2024-06-04 14:07:23,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:23,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:23,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:23,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:07:23,079 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:23,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash 372042309, now seen corresponding path program 2 times [2024-06-04 14:07:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90219885] [2024-06-04 14:07:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:23,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90219885] [2024-06-04 14:07:24,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90219885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:24,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:24,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586928759] [2024-06-04 14:07:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:24,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:24,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:24,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 245 transitions, 3035 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:24,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:24,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:24,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:24,784 INFO L124 PetriNetUnfolderBase]: 645/1147 cut-off events. [2024-06-04 14:07:24,784 INFO L125 PetriNetUnfolderBase]: For 60105/60105 co-relation queries the response was YES. [2024-06-04 14:07:24,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8504 conditions, 1147 events. 645/1147 cut-off events. For 60105/60105 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5848 event pairs, 102 based on Foata normal form. 1/1148 useless extension candidates. Maximal degree in co-relation 8377. Up to 987 conditions per place. [2024-06-04 14:07:24,794 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 54 changer transitions 0/262 dead transitions. [2024-06-04 14:07:24,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 262 transitions, 3689 flow [2024-06-04 14:07:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:07:24,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:07:24,795 INFO L175 Difference]: Start difference. First operand has 261 places, 245 transitions, 3035 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:07:24,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 262 transitions, 3689 flow [2024-06-04 14:07:25,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 262 transitions, 3580 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-04 14:07:25,020 INFO L231 Difference]: Finished difference. Result has 267 places, 247 transitions, 3124 flow [2024-06-04 14:07:25,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3124, PETRI_PLACES=267, PETRI_TRANSITIONS=247} [2024-06-04 14:07:25,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 14:07:25,021 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 247 transitions, 3124 flow [2024-06-04 14:07:25,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:25,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:25,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:25,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:07:25,022 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:25,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:25,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1137443301, now seen corresponding path program 3 times [2024-06-04 14:07:25,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:25,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558803796] [2024-06-04 14:07:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558803796] [2024-06-04 14:07:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558803796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23209447] [2024-06-04 14:07:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:25,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:25,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:25,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:25,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 247 transitions, 3124 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:25,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:25,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:25,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:26,271 INFO L124 PetriNetUnfolderBase]: 653/1163 cut-off events. [2024-06-04 14:07:26,271 INFO L125 PetriNetUnfolderBase]: For 63879/63879 co-relation queries the response was YES. [2024-06-04 14:07:26,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8632 conditions, 1163 events. 653/1163 cut-off events. For 63879/63879 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5968 event pairs, 106 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 8504. Up to 1024 conditions per place. [2024-06-04 14:07:26,282 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 40 changer transitions 0/264 dead transitions. [2024-06-04 14:07:26,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 264 transitions, 3719 flow [2024-06-04 14:07:26,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:07:26,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:07:26,283 INFO L175 Difference]: Start difference. First operand has 267 places, 247 transitions, 3124 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:07:26,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 264 transitions, 3719 flow [2024-06-04 14:07:26,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 264 transitions, 3563 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:26,529 INFO L231 Difference]: Finished difference. Result has 270 places, 249 transitions, 3086 flow [2024-06-04 14:07:26,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3086, PETRI_PLACES=270, PETRI_TRANSITIONS=249} [2024-06-04 14:07:26,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-04 14:07:26,529 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 249 transitions, 3086 flow [2024-06-04 14:07:26,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:26,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:26,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:26,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:07:26,530 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:26,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash 372042123, now seen corresponding path program 4 times [2024-06-04 14:07:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755556639] [2024-06-04 14:07:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:26,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:27,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755556639] [2024-06-04 14:07:27,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755556639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:27,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91947405] [2024-06-04 14:07:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:27,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:27,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:27,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 249 transitions, 3086 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:27,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:27,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:27,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:27,853 INFO L124 PetriNetUnfolderBase]: 657/1171 cut-off events. [2024-06-04 14:07:27,853 INFO L125 PetriNetUnfolderBase]: For 64127/64127 co-relation queries the response was YES. [2024-06-04 14:07:27,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8633 conditions, 1171 events. 657/1171 cut-off events. For 64127/64127 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6016 event pairs, 104 based on Foata normal form. 2/1173 useless extension candidates. Maximal degree in co-relation 8503. Up to 1018 conditions per place. [2024-06-04 14:07:27,864 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 48 changer transitions 0/265 dead transitions. [2024-06-04 14:07:27,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 265 transitions, 3690 flow [2024-06-04 14:07:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:07:27,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 14:07:27,865 INFO L175 Difference]: Start difference. First operand has 270 places, 249 transitions, 3086 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:07:27,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 265 transitions, 3690 flow [2024-06-04 14:07:28,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 265 transitions, 3593 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:28,159 INFO L231 Difference]: Finished difference. Result has 273 places, 250 transitions, 3119 flow [2024-06-04 14:07:28,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3119, PETRI_PLACES=273, PETRI_TRANSITIONS=250} [2024-06-04 14:07:28,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-04 14:07:28,160 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 250 transitions, 3119 flow [2024-06-04 14:07:28,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:28,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:28,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:28,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:07:28,160 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:28,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:28,161 INFO L85 PathProgramCache]: Analyzing trace with hash 520175951, now seen corresponding path program 5 times [2024-06-04 14:07:28,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:28,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734623056] [2024-06-04 14:07:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:28,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734623056] [2024-06-04 14:07:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734623056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:28,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:28,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:28,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107388311] [2024-06-04 14:07:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:28,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:28,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:28,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:28,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:28,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:28,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 250 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:28,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:28,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:28,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:29,345 INFO L124 PetriNetUnfolderBase]: 665/1187 cut-off events. [2024-06-04 14:07:29,345 INFO L125 PetriNetUnfolderBase]: For 66380/66380 co-relation queries the response was YES. [2024-06-04 14:07:29,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1187 events. 665/1187 cut-off events. For 66380/66380 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6129 event pairs, 118 based on Foata normal form. 2/1189 useless extension candidates. Maximal degree in co-relation 8607. Up to 1054 conditions per place. [2024-06-04 14:07:29,357 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 36 changer transitions 0/267 dead transitions. [2024-06-04 14:07:29,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 267 transitions, 3718 flow [2024-06-04 14:07:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:07:29,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:07:29,358 INFO L175 Difference]: Start difference. First operand has 273 places, 250 transitions, 3119 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:07:29,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 267 transitions, 3718 flow [2024-06-04 14:07:29,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 267 transitions, 3602 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:29,586 INFO L231 Difference]: Finished difference. Result has 276 places, 252 transitions, 3118 flow [2024-06-04 14:07:29,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3118, PETRI_PLACES=276, PETRI_TRANSITIONS=252} [2024-06-04 14:07:29,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 14:07:29,587 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 252 transitions, 3118 flow [2024-06-04 14:07:29,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:29,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:29,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:29,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:07:29,588 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:29,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 371922153, now seen corresponding path program 6 times [2024-06-04 14:07:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:29,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112540045] [2024-06-04 14:07:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:30,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:30,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112540045] [2024-06-04 14:07:30,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112540045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:30,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:30,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:30,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010378050] [2024-06-04 14:07:30,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:30,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:30,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:30,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:30,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 252 transitions, 3118 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:30,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:30,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:30,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:30,896 INFO L124 PetriNetUnfolderBase]: 669/1195 cut-off events. [2024-06-04 14:07:30,897 INFO L125 PetriNetUnfolderBase]: For 68153/68153 co-relation queries the response was YES. [2024-06-04 14:07:30,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 1195 events. 669/1195 cut-off events. For 68153/68153 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6202 event pairs, 110 based on Foata normal form. 2/1197 useless extension candidates. Maximal degree in co-relation 8659. Up to 1040 conditions per place. [2024-06-04 14:07:30,909 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2024-06-04 14:07:30,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 268 transitions, 3716 flow [2024-06-04 14:07:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:07:30,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:07:30,913 INFO L175 Difference]: Start difference. First operand has 276 places, 252 transitions, 3118 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:07:30,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 268 transitions, 3716 flow [2024-06-04 14:07:31,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 268 transitions, 3624 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:31,178 INFO L231 Difference]: Finished difference. Result has 280 places, 253 transitions, 3142 flow [2024-06-04 14:07:31,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3142, PETRI_PLACES=280, PETRI_TRANSITIONS=253} [2024-06-04 14:07:31,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-04 14:07:31,179 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 253 transitions, 3142 flow [2024-06-04 14:07:31,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:31,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:31,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:31,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:07:31,180 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:31,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 732820169, now seen corresponding path program 7 times [2024-06-04 14:07:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077049127] [2024-06-04 14:07:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077049127] [2024-06-04 14:07:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077049127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:31,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:31,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:31,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054770618] [2024-06-04 14:07:31,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:31,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:31,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:31,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 253 transitions, 3142 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:31,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:31,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:31,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:32,355 INFO L124 PetriNetUnfolderBase]: 677/1211 cut-off events. [2024-06-04 14:07:32,356 INFO L125 PetriNetUnfolderBase]: For 69850/69850 co-relation queries the response was YES. [2024-06-04 14:07:32,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8897 conditions, 1211 events. 677/1211 cut-off events. For 69850/69850 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6318 event pairs, 112 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 8763. Up to 1055 conditions per place. [2024-06-04 14:07:32,365 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 44 changer transitions 0/270 dead transitions. [2024-06-04 14:07:32,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 270 transitions, 3759 flow [2024-06-04 14:07:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:32,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:07:32,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:07:32,366 INFO L175 Difference]: Start difference. First operand has 280 places, 253 transitions, 3142 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:07:32,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 270 transitions, 3759 flow [2024-06-04 14:07:32,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 270 transitions, 3653 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:32,624 INFO L231 Difference]: Finished difference. Result has 283 places, 255 transitions, 3176 flow [2024-06-04 14:07:32,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3176, PETRI_PLACES=283, PETRI_TRANSITIONS=255} [2024-06-04 14:07:32,624 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-04 14:07:32,625 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 255 transitions, 3176 flow [2024-06-04 14:07:32,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:32,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:32,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:32,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:07:32,625 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:32,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1987010315, now seen corresponding path program 8 times [2024-06-04 14:07:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:32,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916050382] [2024-06-04 14:07:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:32,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:33,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:33,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916050382] [2024-06-04 14:07:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916050382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:33,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:33,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:33,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977455545] [2024-06-04 14:07:33,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:33,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:33,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:33,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:33,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:33,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 255 transitions, 3176 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:33,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:33,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:33,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:33,804 INFO L124 PetriNetUnfolderBase]: 694/1246 cut-off events. [2024-06-04 14:07:33,804 INFO L125 PetriNetUnfolderBase]: For 70428/70428 co-relation queries the response was YES. [2024-06-04 14:07:33,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 1246 events. 694/1246 cut-off events. For 70428/70428 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6614 event pairs, 78 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 8911. Up to 998 conditions per place. [2024-06-04 14:07:33,815 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 37 changer transitions 0/276 dead transitions. [2024-06-04 14:07:33,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 276 transitions, 3818 flow [2024-06-04 14:07:33,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 14:07:33,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 14:07:33,817 INFO L175 Difference]: Start difference. First operand has 283 places, 255 transitions, 3176 flow. Second operand 10 states and 103 transitions. [2024-06-04 14:07:33,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 276 transitions, 3818 flow [2024-06-04 14:07:34,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 276 transitions, 3705 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:34,083 INFO L231 Difference]: Finished difference. Result has 288 places, 259 transitions, 3205 flow [2024-06-04 14:07:34,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3205, PETRI_PLACES=288, PETRI_TRANSITIONS=259} [2024-06-04 14:07:34,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-04 14:07:34,084 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 259 transitions, 3205 flow [2024-06-04 14:07:34,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:34,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:34,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:34,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:07:34,084 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:34,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1234874415, now seen corresponding path program 9 times [2024-06-04 14:07:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:34,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903015852] [2024-06-04 14:07:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:34,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:34,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:34,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903015852] [2024-06-04 14:07:34,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903015852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:34,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:34,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175224914] [2024-06-04 14:07:34,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:34,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:34,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:34,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 259 transitions, 3205 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:34,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:34,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:34,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:35,265 INFO L124 PetriNetUnfolderBase]: 698/1254 cut-off events. [2024-06-04 14:07:35,265 INFO L125 PetriNetUnfolderBase]: For 70368/70368 co-relation queries the response was YES. [2024-06-04 14:07:35,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 1254 events. 698/1254 cut-off events. For 70368/70368 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6642 event pairs, 129 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 8960. Up to 1111 conditions per place. [2024-06-04 14:07:35,278 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 35 changer transitions 0/277 dead transitions. [2024-06-04 14:07:35,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 277 transitions, 3831 flow [2024-06-04 14:07:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:07:35,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 14:07:35,279 INFO L175 Difference]: Start difference. First operand has 288 places, 259 transitions, 3205 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:07:35,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 277 transitions, 3831 flow [2024-06-04 14:07:35,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 277 transitions, 3739 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 14:07:35,574 INFO L231 Difference]: Finished difference. Result has 293 places, 260 transitions, 3221 flow [2024-06-04 14:07:35,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3221, PETRI_PLACES=293, PETRI_TRANSITIONS=260} [2024-06-04 14:07:35,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-04 14:07:35,575 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 260 transitions, 3221 flow [2024-06-04 14:07:35,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:35,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:35,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:35,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:07:35,575 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:35,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1234759095, now seen corresponding path program 10 times [2024-06-04 14:07:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595611183] [2024-06-04 14:07:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:36,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595611183] [2024-06-04 14:07:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595611183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:36,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:36,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986253690] [2024-06-04 14:07:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:36,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:36,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:36,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 260 transitions, 3221 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:36,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:36,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:36,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:37,029 INFO L124 PetriNetUnfolderBase]: 702/1262 cut-off events. [2024-06-04 14:07:37,030 INFO L125 PetriNetUnfolderBase]: For 72562/72562 co-relation queries the response was YES. [2024-06-04 14:07:37,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 1262 events. 702/1262 cut-off events. For 72562/72562 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6721 event pairs, 124 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 9020. Up to 1126 conditions per place. [2024-06-04 14:07:37,043 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 36 changer transitions 0/277 dead transitions. [2024-06-04 14:07:37,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 277 transitions, 3853 flow [2024-06-04 14:07:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:07:37,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:07:37,044 INFO L175 Difference]: Start difference. First operand has 293 places, 260 transitions, 3221 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:07:37,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 277 transitions, 3853 flow [2024-06-04 14:07:37,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 277 transitions, 3755 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:37,323 INFO L231 Difference]: Finished difference. Result has 295 places, 261 transitions, 3235 flow [2024-06-04 14:07:37,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3235, PETRI_PLACES=295, PETRI_TRANSITIONS=261} [2024-06-04 14:07:37,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 14:07:37,324 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 261 transitions, 3235 flow [2024-06-04 14:07:37,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:37,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:37,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:37,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:07:37,325 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:37,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:37,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754259, now seen corresponding path program 3 times [2024-06-04 14:07:37,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:37,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152774245] [2024-06-04 14:07:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:37,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152774245] [2024-06-04 14:07:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152774245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:38,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:38,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:38,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388318813] [2024-06-04 14:07:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:38,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:38,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 261 transitions, 3235 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:38,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:38,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:39,011 INFO L124 PetriNetUnfolderBase]: 705/1267 cut-off events. [2024-06-04 14:07:39,011 INFO L125 PetriNetUnfolderBase]: For 72321/72321 co-relation queries the response was YES. [2024-06-04 14:07:39,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9214 conditions, 1267 events. 705/1267 cut-off events. For 72321/72321 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6758 event pairs, 127 based on Foata normal form. 1/1268 useless extension candidates. Maximal degree in co-relation 9074. Up to 1125 conditions per place. [2024-06-04 14:07:39,024 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 43 changer transitions 0/279 dead transitions. [2024-06-04 14:07:39,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 279 transitions, 3927 flow [2024-06-04 14:07:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:07:39,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 14:07:39,025 INFO L175 Difference]: Start difference. First operand has 295 places, 261 transitions, 3235 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:07:39,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 279 transitions, 3927 flow [2024-06-04 14:07:39,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 279 transitions, 3825 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:39,325 INFO L231 Difference]: Finished difference. Result has 297 places, 263 transitions, 3305 flow [2024-06-04 14:07:39,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3305, PETRI_PLACES=297, PETRI_TRANSITIONS=263} [2024-06-04 14:07:39,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-04 14:07:39,326 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 263 transitions, 3305 flow [2024-06-04 14:07:39,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:39,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:39,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:39,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:07:39,326 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:39,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754445, now seen corresponding path program 11 times [2024-06-04 14:07:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:39,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934803349] [2024-06-04 14:07:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:40,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934803349] [2024-06-04 14:07:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934803349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:40,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:40,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:40,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715935739] [2024-06-04 14:07:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:40,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:40,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 263 transitions, 3305 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:40,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:40,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:40,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:40,666 INFO L124 PetriNetUnfolderBase]: 709/1275 cut-off events. [2024-06-04 14:07:40,666 INFO L125 PetriNetUnfolderBase]: For 76689/76689 co-relation queries the response was YES. [2024-06-04 14:07:40,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9310 conditions, 1275 events. 709/1275 cut-off events. For 76689/76689 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6831 event pairs, 129 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 9169. Up to 1136 conditions per place. [2024-06-04 14:07:40,678 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 40 changer transitions 0/280 dead transitions. [2024-06-04 14:07:40,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 280 transitions, 3953 flow [2024-06-04 14:07:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:07:40,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 14:07:40,680 INFO L175 Difference]: Start difference. First operand has 297 places, 263 transitions, 3305 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:07:40,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 280 transitions, 3953 flow [2024-06-04 14:07:40,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 280 transitions, 3817 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:40,969 INFO L231 Difference]: Finished difference. Result has 299 places, 264 transitions, 3292 flow [2024-06-04 14:07:40,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3292, PETRI_PLACES=299, PETRI_TRANSITIONS=264} [2024-06-04 14:07:40,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-04 14:07:40,970 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 264 transitions, 3292 flow [2024-06-04 14:07:40,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:40,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:40,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:40,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:07:40,971 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:40,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1230105871, now seen corresponding path program 1 times [2024-06-04 14:07:40,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:40,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268094120] [2024-06-04 14:07:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:40,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:42,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268094120] [2024-06-04 14:07:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268094120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:42,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:42,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300685265] [2024-06-04 14:07:42,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:42,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:42,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:42,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 264 transitions, 3292 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:42,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:42,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:42,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:42,894 INFO L124 PetriNetUnfolderBase]: 715/1287 cut-off events. [2024-06-04 14:07:42,894 INFO L125 PetriNetUnfolderBase]: For 78330/78330 co-relation queries the response was YES. [2024-06-04 14:07:42,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9371 conditions, 1287 events. 715/1287 cut-off events. For 78330/78330 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6918 event pairs, 127 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9229. Up to 1144 conditions per place. [2024-06-04 14:07:42,907 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 240 selfloop transitions, 40 changer transitions 0/282 dead transitions. [2024-06-04 14:07:42,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 282 transitions, 3960 flow [2024-06-04 14:07:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:07:42,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 14:07:42,908 INFO L175 Difference]: Start difference. First operand has 299 places, 264 transitions, 3292 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:07:42,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 282 transitions, 3960 flow [2024-06-04 14:07:43,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 282 transitions, 3849 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:43,240 INFO L231 Difference]: Finished difference. Result has 301 places, 266 transitions, 3315 flow [2024-06-04 14:07:43,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3315, PETRI_PLACES=301, PETRI_TRANSITIONS=266} [2024-06-04 14:07:43,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:07:43,241 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 266 transitions, 3315 flow [2024-06-04 14:07:43,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:43,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:43,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:43,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:07:43,241 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:43,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1269659783, now seen corresponding path program 12 times [2024-06-04 14:07:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:43,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480260177] [2024-06-04 14:07:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:43,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:44,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:44,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480260177] [2024-06-04 14:07:44,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480260177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:44,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:44,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:44,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522150462] [2024-06-04 14:07:44,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:44,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:44,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:44,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:44,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 266 transitions, 3315 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:44,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:44,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:44,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:44,705 INFO L124 PetriNetUnfolderBase]: 719/1295 cut-off events. [2024-06-04 14:07:44,705 INFO L125 PetriNetUnfolderBase]: For 80469/80469 co-relation queries the response was YES. [2024-06-04 14:07:44,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9443 conditions, 1295 events. 719/1295 cut-off events. For 80469/80469 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7010 event pairs, 119 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 9300. Up to 1147 conditions per place. [2024-06-04 14:07:44,719 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 40 changer transitions 0/283 dead transitions. [2024-06-04 14:07:44,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 283 transitions, 3977 flow [2024-06-04 14:07:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:07:44,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:07:44,722 INFO L175 Difference]: Start difference. First operand has 301 places, 266 transitions, 3315 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:07:44,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 283 transitions, 3977 flow [2024-06-04 14:07:45,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 283 transitions, 3876 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:45,082 INFO L231 Difference]: Finished difference. Result has 304 places, 267 transitions, 3338 flow [2024-06-04 14:07:45,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3338, PETRI_PLACES=304, PETRI_TRANSITIONS=267} [2024-06-04 14:07:45,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 14:07:45,082 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 267 transitions, 3338 flow [2024-06-04 14:07:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:45,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:45,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:07:45,083 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:45,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1269655133, now seen corresponding path program 13 times [2024-06-04 14:07:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008945399] [2024-06-04 14:07:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:45,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:45,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008945399] [2024-06-04 14:07:45,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008945399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:45,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:45,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184442500] [2024-06-04 14:07:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:45,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:45,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:45,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:45,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:46,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:46,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 267 transitions, 3338 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:46,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:46,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:46,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:46,502 INFO L124 PetriNetUnfolderBase]: 723/1303 cut-off events. [2024-06-04 14:07:46,503 INFO L125 PetriNetUnfolderBase]: For 83213/83213 co-relation queries the response was YES. [2024-06-04 14:07:46,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9550 conditions, 1303 events. 723/1303 cut-off events. For 83213/83213 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7060 event pairs, 118 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 9406. Up to 1155 conditions per place. [2024-06-04 14:07:46,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 39 changer transitions 0/284 dead transitions. [2024-06-04 14:07:46,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 3996 flow [2024-06-04 14:07:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:07:46,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:07:46,519 INFO L175 Difference]: Start difference. First operand has 304 places, 267 transitions, 3338 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:07:46,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 3996 flow [2024-06-04 14:07:46,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 284 transitions, 3882 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:46,889 INFO L231 Difference]: Finished difference. Result has 306 places, 268 transitions, 3348 flow [2024-06-04 14:07:46,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3348, PETRI_PLACES=306, PETRI_TRANSITIONS=268} [2024-06-04 14:07:46,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 14:07:46,890 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 268 transitions, 3348 flow [2024-06-04 14:07:46,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:46,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:46,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:46,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:07:46,891 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:46,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1057376661, now seen corresponding path program 1 times [2024-06-04 14:07:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:46,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183904508] [2024-06-04 14:07:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:46,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183904508] [2024-06-04 14:07:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183904508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:48,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:48,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:48,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039931785] [2024-06-04 14:07:48,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:48,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:48,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 268 transitions, 3348 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:48,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:48,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:48,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:49,129 INFO L124 PetriNetUnfolderBase]: 743/1347 cut-off events. [2024-06-04 14:07:49,129 INFO L125 PetriNetUnfolderBase]: For 111267/111267 co-relation queries the response was YES. [2024-06-04 14:07:49,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9783 conditions, 1347 events. 743/1347 cut-off events. For 111267/111267 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7305 event pairs, 135 based on Foata normal form. 12/1359 useless extension candidates. Maximal degree in co-relation 9638. Up to 1144 conditions per place. [2024-06-04 14:07:49,143 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 238 selfloop transitions, 46 changer transitions 6/292 dead transitions. [2024-06-04 14:07:49,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 4104 flow [2024-06-04 14:07:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:07:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:07:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:07:49,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 14:07:49,145 INFO L175 Difference]: Start difference. First operand has 306 places, 268 transitions, 3348 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:07:49,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 4104 flow [2024-06-04 14:07:49,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 292 transitions, 3990 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:49,500 INFO L231 Difference]: Finished difference. Result has 310 places, 268 transitions, 3358 flow [2024-06-04 14:07:49,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3358, PETRI_PLACES=310, PETRI_TRANSITIONS=268} [2024-06-04 14:07:49,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-04 14:07:49,500 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 268 transitions, 3358 flow [2024-06-04 14:07:49,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:49,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:49,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:07:49,501 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:49,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 355547911, now seen corresponding path program 2 times [2024-06-04 14:07:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240723665] [2024-06-04 14:07:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:50,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240723665] [2024-06-04 14:07:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240723665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:50,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:50,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649979895] [2024-06-04 14:07:50,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:50,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:51,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:51,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 268 transitions, 3358 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:51,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:51,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:51,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:51,543 INFO L124 PetriNetUnfolderBase]: 743/1347 cut-off events. [2024-06-04 14:07:51,543 INFO L125 PetriNetUnfolderBase]: For 87403/87403 co-relation queries the response was YES. [2024-06-04 14:07:51,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 1347 events. 743/1347 cut-off events. For 87403/87403 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7342 event pairs, 126 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 9654. Up to 1189 conditions per place. [2024-06-04 14:07:51,554 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 243 selfloop transitions, 43 changer transitions 0/288 dead transitions. [2024-06-04 14:07:51,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 288 transitions, 4060 flow [2024-06-04 14:07:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:07:51,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:07:51,556 INFO L175 Difference]: Start difference. First operand has 310 places, 268 transitions, 3358 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:07:51,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 288 transitions, 4060 flow [2024-06-04 14:07:51,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 288 transitions, 3919 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-04 14:07:51,867 INFO L231 Difference]: Finished difference. Result has 310 places, 270 transitions, 3360 flow [2024-06-04 14:07:51,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3360, PETRI_PLACES=310, PETRI_TRANSITIONS=270} [2024-06-04 14:07:51,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-04 14:07:51,868 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 270 transitions, 3360 flow [2024-06-04 14:07:51,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:51,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:51,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:51,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:07:51,868 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:51,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1057622925, now seen corresponding path program 14 times [2024-06-04 14:07:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:51,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408027609] [2024-06-04 14:07:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:51,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:52,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:52,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408027609] [2024-06-04 14:07:52,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408027609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:52,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:52,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:52,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811342023] [2024-06-04 14:07:52,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:52,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:52,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:52,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:52,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:52,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 270 transitions, 3360 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:52,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:52,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:52,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:53,273 INFO L124 PetriNetUnfolderBase]: 747/1355 cut-off events. [2024-06-04 14:07:53,273 INFO L125 PetriNetUnfolderBase]: For 90108/90108 co-relation queries the response was YES. [2024-06-04 14:07:53,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9856 conditions, 1355 events. 747/1355 cut-off events. For 90108/90108 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7411 event pairs, 126 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 9709. Up to 1182 conditions per place. [2024-06-04 14:07:53,290 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 46 changer transitions 0/287 dead transitions. [2024-06-04 14:07:53,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 287 transitions, 4034 flow [2024-06-04 14:07:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:07:53,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:07:53,292 INFO L175 Difference]: Start difference. First operand has 310 places, 270 transitions, 3360 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:07:53,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 287 transitions, 4034 flow [2024-06-04 14:07:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 287 transitions, 3915 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:53,636 INFO L231 Difference]: Finished difference. Result has 311 places, 271 transitions, 3381 flow [2024-06-04 14:07:53,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3381, PETRI_PLACES=311, PETRI_TRANSITIONS=271} [2024-06-04 14:07:53,636 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-04 14:07:53,636 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 271 transitions, 3381 flow [2024-06-04 14:07:53,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:53,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:53,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:53,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:07:53,637 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:53,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1057615981, now seen corresponding path program 3 times [2024-06-04 14:07:53,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:53,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918796955] [2024-06-04 14:07:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:53,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918796955] [2024-06-04 14:07:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918796955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:54,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:54,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551511948] [2024-06-04 14:07:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:54,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:54,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:54,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 271 transitions, 3381 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:54,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:54,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:54,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:55,416 INFO L124 PetriNetUnfolderBase]: 753/1365 cut-off events. [2024-06-04 14:07:55,417 INFO L125 PetriNetUnfolderBase]: For 92438/92438 co-relation queries the response was YES. [2024-06-04 14:07:55,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9955 conditions, 1365 events. 753/1365 cut-off events. For 92438/92438 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7472 event pairs, 124 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 9807. Up to 1149 conditions per place. [2024-06-04 14:07:55,432 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 55 changer transitions 0/291 dead transitions. [2024-06-04 14:07:55,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 291 transitions, 4093 flow [2024-06-04 14:07:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:07:55,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 14:07:55,433 INFO L175 Difference]: Start difference. First operand has 311 places, 271 transitions, 3381 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:07:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 291 transitions, 4093 flow [2024-06-04 14:07:55,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 291 transitions, 3960 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:55,842 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 3419 flow [2024-06-04 14:07:55,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3419, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2024-06-04 14:07:55,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 14:07:55,843 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 3419 flow [2024-06-04 14:07:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:55,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:55,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:07:55,843 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:55,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1057385341, now seen corresponding path program 4 times [2024-06-04 14:07:55,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:55,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127401942] [2024-06-04 14:07:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127401942] [2024-06-04 14:07:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127401942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:07:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472299412] [2024-06-04 14:07:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:07:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:07:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:07:57,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:57,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 3419 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:57,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:57,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:57,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:57,839 INFO L124 PetriNetUnfolderBase]: 749/1359 cut-off events. [2024-06-04 14:07:57,839 INFO L125 PetriNetUnfolderBase]: For 87832/87832 co-relation queries the response was YES. [2024-06-04 14:07:57,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9733 conditions, 1359 events. 749/1359 cut-off events. For 87832/87832 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7442 event pairs, 125 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 9584. Up to 1106 conditions per place. [2024-06-04 14:07:57,855 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 60 changer transitions 0/289 dead transitions. [2024-06-04 14:07:57,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 289 transitions, 4063 flow [2024-06-04 14:07:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:07:57,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:07:57,856 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 3419 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:07:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 289 transitions, 4063 flow [2024-06-04 14:07:58,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 289 transitions, 3900 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:58,293 INFO L231 Difference]: Finished difference. Result has 315 places, 273 transitions, 3383 flow [2024-06-04 14:07:58,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3383, PETRI_PLACES=315, PETRI_TRANSITIONS=273} [2024-06-04 14:07:58,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-04 14:07:58,294 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 273 transitions, 3383 flow [2024-06-04 14:07:58,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:58,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:58,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:58,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:07:58,295 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:07:58,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1306676629, now seen corresponding path program 15 times [2024-06-04 14:07:58,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:58,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563370498] [2024-06-04 14:07:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:58,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:59,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563370498] [2024-06-04 14:07:59,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563370498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:59,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:59,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:59,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078580956] [2024-06-04 14:07:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:59,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:59,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:07:59,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 273 transitions, 3383 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:59,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:59,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:07:59,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:59,752 INFO L124 PetriNetUnfolderBase]: 753/1365 cut-off events. [2024-06-04 14:07:59,752 INFO L125 PetriNetUnfolderBase]: For 89835/89835 co-relation queries the response was YES. [2024-06-04 14:07:59,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9814 conditions, 1365 events. 753/1365 cut-off events. For 89835/89835 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7466 event pairs, 92 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 9664. Up to 1069 conditions per place. [2024-06-04 14:07:59,767 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 240 selfloop transitions, 46 changer transitions 0/288 dead transitions. [2024-06-04 14:07:59,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 288 transitions, 4031 flow [2024-06-04 14:07:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-04 14:07:59,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-04 14:07:59,768 INFO L175 Difference]: Start difference. First operand has 315 places, 273 transitions, 3383 flow. Second operand 9 states and 94 transitions. [2024-06-04 14:07:59,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 288 transitions, 4031 flow [2024-06-04 14:08:00,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 288 transitions, 3874 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:00,186 INFO L231 Difference]: Finished difference. Result has 316 places, 274 transitions, 3374 flow [2024-06-04 14:08:00,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3374, PETRI_PLACES=316, PETRI_TRANSITIONS=274} [2024-06-04 14:08:00,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-04 14:08:00,187 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 274 transitions, 3374 flow [2024-06-04 14:08:00,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:00,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:00,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:08:00,187 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:00,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1348187097, now seen corresponding path program 4 times [2024-06-04 14:08:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:00,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518405659] [2024-06-04 14:08:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:01,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:01,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518405659] [2024-06-04 14:08:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518405659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:01,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:01,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962647880] [2024-06-04 14:08:01,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:01,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:01,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 274 transitions, 3374 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:01,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:01,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:01,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:01,964 INFO L124 PetriNetUnfolderBase]: 756/1370 cut-off events. [2024-06-04 14:08:01,965 INFO L125 PetriNetUnfolderBase]: For 86897/86897 co-relation queries the response was YES. [2024-06-04 14:08:01,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9827 conditions, 1370 events. 756/1370 cut-off events. For 86897/86897 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7515 event pairs, 131 based on Foata normal form. 1/1371 useless extension candidates. Maximal degree in co-relation 9676. Up to 1170 conditions per place. [2024-06-04 14:08:01,979 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 71 changer transitions 0/289 dead transitions. [2024-06-04 14:08:01,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 289 transitions, 4076 flow [2024-06-04 14:08:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:08:01,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:08:01,981 INFO L175 Difference]: Start difference. First operand has 316 places, 274 transitions, 3374 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:08:01,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 289 transitions, 4076 flow [2024-06-04 14:08:02,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 289 transitions, 3939 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:02,394 INFO L231 Difference]: Finished difference. Result has 317 places, 276 transitions, 3476 flow [2024-06-04 14:08:02,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3476, PETRI_PLACES=317, PETRI_TRANSITIONS=276} [2024-06-04 14:08:02,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-04 14:08:02,395 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 276 transitions, 3476 flow [2024-06-04 14:08:02,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:02,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:02,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:08:02,396 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:02,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1348187283, now seen corresponding path program 16 times [2024-06-04 14:08:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088626454] [2024-06-04 14:08:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:03,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088626454] [2024-06-04 14:08:03,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088626454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:03,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:03,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477422535] [2024-06-04 14:08:03,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:03,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:03,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:03,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 276 transitions, 3476 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:03,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:03,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:03,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:03,889 INFO L124 PetriNetUnfolderBase]: 760/1378 cut-off events. [2024-06-04 14:08:03,889 INFO L125 PetriNetUnfolderBase]: For 87698/87698 co-relation queries the response was YES. [2024-06-04 14:08:03,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9892 conditions, 1378 events. 760/1378 cut-off events. For 87698/87698 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7585 event pairs, 131 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 9741. Up to 1191 conditions per place. [2024-06-04 14:08:03,904 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 227 selfloop transitions, 61 changer transitions 0/290 dead transitions. [2024-06-04 14:08:03,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 290 transitions, 4140 flow [2024-06-04 14:08:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:08:03,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 14:08:03,906 INFO L175 Difference]: Start difference. First operand has 317 places, 276 transitions, 3476 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:08:03,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 290 transitions, 4140 flow [2024-06-04 14:08:04,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 290 transitions, 3957 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:04,297 INFO L231 Difference]: Finished difference. Result has 319 places, 277 transitions, 3468 flow [2024-06-04 14:08:04,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3468, PETRI_PLACES=319, PETRI_TRANSITIONS=277} [2024-06-04 14:08:04,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-04 14:08:04,298 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 277 transitions, 3468 flow [2024-06-04 14:08:04,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:04,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:04,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:08:04,299 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:04,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1348307253, now seen corresponding path program 17 times [2024-06-04 14:08:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989537537] [2024-06-04 14:08:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:05,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989537537] [2024-06-04 14:08:05,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989537537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:05,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:05,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:05,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145307901] [2024-06-04 14:08:05,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:05,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:05,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:05,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:05,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 277 transitions, 3468 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:05,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:05,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:05,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:05,605 INFO L124 PetriNetUnfolderBase]: 764/1386 cut-off events. [2024-06-04 14:08:05,605 INFO L125 PetriNetUnfolderBase]: For 88473/88473 co-relation queries the response was YES. [2024-06-04 14:08:05,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 1386 events. 764/1386 cut-off events. For 88473/88473 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7643 event pairs, 137 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 9782. Up to 1209 conditions per place. [2024-06-04 14:08:05,621 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 245 selfloop transitions, 44 changer transitions 0/291 dead transitions. [2024-06-04 14:08:05,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 291 transitions, 4120 flow [2024-06-04 14:08:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:08:05,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 14:08:05,622 INFO L175 Difference]: Start difference. First operand has 319 places, 277 transitions, 3468 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:08:05,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 291 transitions, 4120 flow [2024-06-04 14:08:06,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 291 transitions, 3961 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:06,019 INFO L231 Difference]: Finished difference. Result has 321 places, 278 transitions, 3451 flow [2024-06-04 14:08:06,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3451, PETRI_PLACES=321, PETRI_TRANSITIONS=278} [2024-06-04 14:08:06,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 14:08:06,020 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 278 transitions, 3451 flow [2024-06-04 14:08:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:06,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:06,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:06,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:08:06,021 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:06,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1348191933, now seen corresponding path program 18 times [2024-06-04 14:08:06,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:06,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394383488] [2024-06-04 14:08:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:06,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:06,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:06,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394383488] [2024-06-04 14:08:06,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394383488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:06,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:06,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:06,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715371566] [2024-06-04 14:08:06,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:06,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:06,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:07,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:07,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 278 transitions, 3451 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:07,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:07,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:07,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:07,557 INFO L124 PetriNetUnfolderBase]: 768/1394 cut-off events. [2024-06-04 14:08:07,557 INFO L125 PetriNetUnfolderBase]: For 88341/88341 co-relation queries the response was YES. [2024-06-04 14:08:07,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9941 conditions, 1394 events. 768/1394 cut-off events. For 88341/88341 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7720 event pairs, 129 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 9788. Up to 1210 conditions per place. [2024-06-04 14:08:07,572 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 53 changer transitions 0/292 dead transitions. [2024-06-04 14:08:07,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 292 transitions, 4113 flow [2024-06-04 14:08:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:08:07,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:08:07,574 INFO L175 Difference]: Start difference. First operand has 321 places, 278 transitions, 3451 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:08:07,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 292 transitions, 4113 flow [2024-06-04 14:08:08,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 292 transitions, 3987 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:08,048 INFO L231 Difference]: Finished difference. Result has 323 places, 279 transitions, 3485 flow [2024-06-04 14:08:08,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3485, PETRI_PLACES=323, PETRI_TRANSITIONS=279} [2024-06-04 14:08:08,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-04 14:08:08,048 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 279 transitions, 3485 flow [2024-06-04 14:08:08,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:08,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:08,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:08,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:08:08,049 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:08,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:08,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1056325183, now seen corresponding path program 19 times [2024-06-04 14:08:08,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:08,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595249018] [2024-06-04 14:08:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:08,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:08,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595249018] [2024-06-04 14:08:08,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595249018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:08,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:08,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:08,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264590784] [2024-06-04 14:08:08,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:08,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:08,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:08,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:08,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 279 transitions, 3485 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:08,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:08,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:08,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:09,326 INFO L124 PetriNetUnfolderBase]: 772/1402 cut-off events. [2024-06-04 14:08:09,326 INFO L125 PetriNetUnfolderBase]: For 88552/88552 co-relation queries the response was YES. [2024-06-04 14:08:09,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10006 conditions, 1402 events. 772/1402 cut-off events. For 88552/88552 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7789 event pairs, 110 based on Foata normal form. 2/1404 useless extension candidates. Maximal degree in co-relation 9852. Up to 1192 conditions per place. [2024-06-04 14:08:09,342 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 247 selfloop transitions, 47 changer transitions 0/296 dead transitions. [2024-06-04 14:08:09,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 296 transitions, 4167 flow [2024-06-04 14:08:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:08:09,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 14:08:09,343 INFO L175 Difference]: Start difference. First operand has 323 places, 279 transitions, 3485 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:08:09,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 296 transitions, 4167 flow [2024-06-04 14:08:09,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 296 transitions, 4023 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:09,765 INFO L231 Difference]: Finished difference. Result has 325 places, 280 transitions, 3487 flow [2024-06-04 14:08:09,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3487, PETRI_PLACES=325, PETRI_TRANSITIONS=280} [2024-06-04 14:08:09,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-04 14:08:09,766 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 280 transitions, 3487 flow [2024-06-04 14:08:09,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:09,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:09,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:09,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:08:09,767 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:09,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash 464918851, now seen corresponding path program 20 times [2024-06-04 14:08:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:09,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967948993] [2024-06-04 14:08:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967948993] [2024-06-04 14:08:10,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967948993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:10,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:10,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38041004] [2024-06-04 14:08:10,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:10,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:10,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 280 transitions, 3487 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:10,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:10,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:10,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:10,892 INFO L124 PetriNetUnfolderBase]: 776/1410 cut-off events. [2024-06-04 14:08:10,892 INFO L125 PetriNetUnfolderBase]: For 88719/88719 co-relation queries the response was YES. [2024-06-04 14:08:10,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 1410 events. 776/1410 cut-off events. For 88719/88719 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7844 event pairs, 148 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 9886. Up to 1249 conditions per place. [2024-06-04 14:08:10,909 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 247 selfloop transitions, 48 changer transitions 0/297 dead transitions. [2024-06-04 14:08:10,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 297 transitions, 4179 flow [2024-06-04 14:08:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:08:10,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 14:08:10,911 INFO L175 Difference]: Start difference. First operand has 325 places, 280 transitions, 3487 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:08:10,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 297 transitions, 4179 flow [2024-06-04 14:08:11,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 297 transitions, 4045 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:11,352 INFO L231 Difference]: Finished difference. Result has 327 places, 281 transitions, 3501 flow [2024-06-04 14:08:11,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3501, PETRI_PLACES=327, PETRI_TRANSITIONS=281} [2024-06-04 14:08:11,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 14:08:11,352 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 281 transitions, 3501 flow [2024-06-04 14:08:11,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:11,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:11,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:11,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:08:11,353 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:11,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:11,353 INFO L85 PathProgramCache]: Analyzing trace with hash 464923687, now seen corresponding path program 5 times [2024-06-04 14:08:11,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:11,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684266026] [2024-06-04 14:08:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:11,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:12,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:12,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684266026] [2024-06-04 14:08:12,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684266026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:12,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:12,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256549956] [2024-06-04 14:08:12,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:12,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:12,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:12,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:12,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 281 transitions, 3501 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:12,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:12,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:12,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:13,073 INFO L124 PetriNetUnfolderBase]: 774/1407 cut-off events. [2024-06-04 14:08:13,073 INFO L125 PetriNetUnfolderBase]: For 81692/81692 co-relation queries the response was YES. [2024-06-04 14:08:13,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 1407 events. 774/1407 cut-off events. For 81692/81692 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7839 event pairs, 146 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 9695. Up to 1234 conditions per place. [2024-06-04 14:08:13,087 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 237 selfloop transitions, 60 changer transitions 0/299 dead transitions. [2024-06-04 14:08:13,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 299 transitions, 4243 flow [2024-06-04 14:08:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:08:13,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:08:13,089 INFO L175 Difference]: Start difference. First operand has 327 places, 281 transitions, 3501 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:08:13,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 299 transitions, 4243 flow [2024-06-04 14:08:13,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 299 transitions, 4109 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:13,577 INFO L231 Difference]: Finished difference. Result has 329 places, 283 transitions, 3579 flow [2024-06-04 14:08:13,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3579, PETRI_PLACES=329, PETRI_TRANSITIONS=283} [2024-06-04 14:08:13,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-04 14:08:13,578 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 283 transitions, 3579 flow [2024-06-04 14:08:13,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:13,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:13,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:13,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:08:13,579 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:13,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash 464923501, now seen corresponding path program 21 times [2024-06-04 14:08:13,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:13,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564522062] [2024-06-04 14:08:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:13,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:14,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:14,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564522062] [2024-06-04 14:08:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564522062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:14,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:14,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:14,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801243339] [2024-06-04 14:08:14,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:14,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:14,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:14,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:14,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:14,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 283 transitions, 3579 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:14,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:14,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:14,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:14,983 INFO L124 PetriNetUnfolderBase]: 778/1415 cut-off events. [2024-06-04 14:08:14,984 INFO L125 PetriNetUnfolderBase]: For 84719/84719 co-relation queries the response was YES. [2024-06-04 14:08:14,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9927 conditions, 1415 events. 778/1415 cut-off events. For 84719/84719 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7892 event pairs, 148 based on Foata normal form. 2/1417 useless extension candidates. Maximal degree in co-relation 9770. Up to 1248 conditions per place. [2024-06-04 14:08:14,997 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 244 selfloop transitions, 54 changer transitions 0/300 dead transitions. [2024-06-04 14:08:14,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 300 transitions, 4283 flow [2024-06-04 14:08:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:08:14,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:08:14,998 INFO L175 Difference]: Start difference. First operand has 329 places, 283 transitions, 3579 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:08:14,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 300 transitions, 4283 flow [2024-06-04 14:08:15,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 300 transitions, 4117 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:15,411 INFO L231 Difference]: Finished difference. Result has 331 places, 284 transitions, 3573 flow [2024-06-04 14:08:15,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3573, PETRI_PLACES=331, PETRI_TRANSITIONS=284} [2024-06-04 14:08:15,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 14:08:15,412 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 284 transitions, 3573 flow [2024-06-04 14:08:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:15,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:15,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:15,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:08:15,412 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:15,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:15,413 INFO L85 PathProgramCache]: Analyzing trace with hash 469572075, now seen corresponding path program 5 times [2024-06-04 14:08:15,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:15,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756866512] [2024-06-04 14:08:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756866512] [2024-06-04 14:08:16,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756866512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:16,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:16,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507266034] [2024-06-04 14:08:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:16,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:16,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 284 transitions, 3573 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:16,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:16,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:16,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:17,531 INFO L124 PetriNetUnfolderBase]: 784/1427 cut-off events. [2024-06-04 14:08:17,531 INFO L125 PetriNetUnfolderBase]: For 84924/84924 co-relation queries the response was YES. [2024-06-04 14:08:17,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 1427 events. 784/1427 cut-off events. For 84924/84924 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7962 event pairs, 143 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 9833. Up to 1254 conditions per place. [2024-06-04 14:08:17,547 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 249 selfloop transitions, 51 changer transitions 0/302 dead transitions. [2024-06-04 14:08:17,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 302 transitions, 4313 flow [2024-06-04 14:08:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:08:17,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:08:17,549 INFO L175 Difference]: Start difference. First operand has 331 places, 284 transitions, 3573 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:08:17,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 302 transitions, 4313 flow [2024-06-04 14:08:17,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 302 transitions, 4169 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:17,947 INFO L231 Difference]: Finished difference. Result has 333 places, 286 transitions, 3611 flow [2024-06-04 14:08:17,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3611, PETRI_PLACES=333, PETRI_TRANSITIONS=286} [2024-06-04 14:08:17,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-04 14:08:17,948 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 286 transitions, 3611 flow [2024-06-04 14:08:17,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:17,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:17,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:17,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:08:17,948 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:17,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 635625931, now seen corresponding path program 22 times [2024-06-04 14:08:17,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:17,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032221397] [2024-06-04 14:08:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:17,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:18,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032221397] [2024-06-04 14:08:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032221397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:18,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885528170] [2024-06-04 14:08:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:18,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:18,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:18,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:18,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 286 transitions, 3611 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:18,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:18,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:18,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:19,388 INFO L124 PetriNetUnfolderBase]: 788/1435 cut-off events. [2024-06-04 14:08:19,388 INFO L125 PetriNetUnfolderBase]: For 84885/84885 co-relation queries the response was YES. [2024-06-04 14:08:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10042 conditions, 1435 events. 788/1435 cut-off events. For 84885/84885 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8034 event pairs, 123 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 9883. Up to 1247 conditions per place. [2024-06-04 14:08:19,406 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 248 selfloop transitions, 51 changer transitions 0/301 dead transitions. [2024-06-04 14:08:19,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 301 transitions, 4307 flow [2024-06-04 14:08:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:08:19,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:08:19,408 INFO L175 Difference]: Start difference. First operand has 333 places, 286 transitions, 3611 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:08:19,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 301 transitions, 4307 flow [2024-06-04 14:08:19,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 301 transitions, 4161 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:19,824 INFO L231 Difference]: Finished difference. Result has 334 places, 287 transitions, 3617 flow [2024-06-04 14:08:19,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3617, PETRI_PLACES=334, PETRI_TRANSITIONS=287} [2024-06-04 14:08:19,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 14:08:19,825 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 287 transitions, 3617 flow [2024-06-04 14:08:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:19,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:19,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:19,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:08:19,825 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:19,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 635621281, now seen corresponding path program 23 times [2024-06-04 14:08:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:19,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464667774] [2024-06-04 14:08:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:20,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464667774] [2024-06-04 14:08:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464667774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:20,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:20,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:20,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549234995] [2024-06-04 14:08:20,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:20,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:20,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:20,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 287 transitions, 3617 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:20,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:20,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:20,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:21,251 INFO L124 PetriNetUnfolderBase]: 792/1443 cut-off events. [2024-06-04 14:08:21,251 INFO L125 PetriNetUnfolderBase]: For 85450/85450 co-relation queries the response was YES. [2024-06-04 14:08:21,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10104 conditions, 1443 events. 792/1443 cut-off events. For 85450/85450 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8071 event pairs, 119 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 9945. Up to 1255 conditions per place. [2024-06-04 14:08:21,267 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 251 selfloop transitions, 49 changer transitions 0/302 dead transitions. [2024-06-04 14:08:21,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 302 transitions, 4309 flow [2024-06-04 14:08:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:08:21,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 14:08:21,268 INFO L175 Difference]: Start difference. First operand has 334 places, 287 transitions, 3617 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:08:21,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 302 transitions, 4309 flow [2024-06-04 14:08:21,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 302 transitions, 4167 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:21,656 INFO L231 Difference]: Finished difference. Result has 336 places, 288 transitions, 3625 flow [2024-06-04 14:08:21,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3625, PETRI_PLACES=336, PETRI_TRANSITIONS=288} [2024-06-04 14:08:21,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 14:08:21,657 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 288 transitions, 3625 flow [2024-06-04 14:08:21,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:21,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:21,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:21,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:08:21,657 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:21,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 635805855, now seen corresponding path program 6 times [2024-06-04 14:08:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739868043] [2024-06-04 14:08:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:23,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:23,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739868043] [2024-06-04 14:08:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739868043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:23,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876102908] [2024-06-04 14:08:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:23,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:23,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:23,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 288 transitions, 3625 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:23,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:23,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:23,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:23,700 INFO L124 PetriNetUnfolderBase]: 798/1453 cut-off events. [2024-06-04 14:08:23,700 INFO L125 PetriNetUnfolderBase]: For 85222/85222 co-relation queries the response was YES. [2024-06-04 14:08:23,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 1453 events. 798/1453 cut-off events. For 85222/85222 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8128 event pairs, 123 based on Foata normal form. 2/1455 useless extension candidates. Maximal degree in co-relation 9987. Up to 1245 conditions per place. [2024-06-04 14:08:23,715 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 247 selfloop transitions, 55 changer transitions 0/304 dead transitions. [2024-06-04 14:08:23,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 304 transitions, 4363 flow [2024-06-04 14:08:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:08:23,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 14:08:23,716 INFO L175 Difference]: Start difference. First operand has 336 places, 288 transitions, 3625 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:08:23,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 304 transitions, 4363 flow [2024-06-04 14:08:24,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 304 transitions, 4227 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:24,119 INFO L231 Difference]: Finished difference. Result has 338 places, 290 transitions, 3683 flow [2024-06-04 14:08:24,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3489, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3683, PETRI_PLACES=338, PETRI_TRANSITIONS=290} [2024-06-04 14:08:24,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-04 14:08:24,120 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 290 transitions, 3683 flow [2024-06-04 14:08:24,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:24,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:24,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:24,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:08:24,121 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:24,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash -101761159, now seen corresponding path program 7 times [2024-06-04 14:08:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486174499] [2024-06-04 14:08:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:25,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486174499] [2024-06-04 14:08:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486174499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:25,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:25,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327397245] [2024-06-04 14:08:25,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:25,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:25,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:25,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:25,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 290 transitions, 3683 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:25,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:25,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:25,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:26,244 INFO L124 PetriNetUnfolderBase]: 820/1489 cut-off events. [2024-06-04 14:08:26,244 INFO L125 PetriNetUnfolderBase]: For 92032/92032 co-relation queries the response was YES. [2024-06-04 14:08:26,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10617 conditions, 1489 events. 820/1489 cut-off events. For 92032/92032 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8376 event pairs, 120 based on Foata normal form. 2/1491 useless extension candidates. Maximal degree in co-relation 10456. Up to 1069 conditions per place. [2024-06-04 14:08:26,267 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 105 changer transitions 0/313 dead transitions. [2024-06-04 14:08:26,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 313 transitions, 4705 flow [2024-06-04 14:08:26,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:08:26,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 14:08:26,269 INFO L175 Difference]: Start difference. First operand has 338 places, 290 transitions, 3683 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:08:26,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 313 transitions, 4705 flow [2024-06-04 14:08:26,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 313 transitions, 4544 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:26,848 INFO L231 Difference]: Finished difference. Result has 340 places, 296 transitions, 3912 flow [2024-06-04 14:08:26,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3912, PETRI_PLACES=340, PETRI_TRANSITIONS=296} [2024-06-04 14:08:26,849 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 14:08:26,849 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 296 transitions, 3912 flow [2024-06-04 14:08:26,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:26,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:26,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:26,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:08:26,849 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:26,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:26,856 INFO L85 PathProgramCache]: Analyzing trace with hash -101752479, now seen corresponding path program 2 times [2024-06-04 14:08:26,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:26,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919702102] [2024-06-04 14:08:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:26,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:28,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919702102] [2024-06-04 14:08:28,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919702102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:28,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:28,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715052792] [2024-06-04 14:08:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:28,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:28,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:28,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 296 transitions, 3912 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:28,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:28,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:28,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:29,247 INFO L124 PetriNetUnfolderBase]: 840/1533 cut-off events. [2024-06-04 14:08:29,247 INFO L125 PetriNetUnfolderBase]: For 121948/121948 co-relation queries the response was YES. [2024-06-04 14:08:29,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11005 conditions, 1533 events. 840/1533 cut-off events. For 121948/121948 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8657 event pairs, 156 based on Foata normal form. 12/1545 useless extension candidates. Maximal degree in co-relation 10844. Up to 1250 conditions per place. [2024-06-04 14:08:29,263 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 60 changer transitions 6/318 dead transitions. [2024-06-04 14:08:29,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 318 transitions, 4714 flow [2024-06-04 14:08:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:08:29,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:08:29,264 INFO L175 Difference]: Start difference. First operand has 340 places, 296 transitions, 3912 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:08:29,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 318 transitions, 4714 flow [2024-06-04 14:08:29,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 318 transitions, 4542 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:29,727 INFO L231 Difference]: Finished difference. Result has 345 places, 296 transitions, 3896 flow [2024-06-04 14:08:29,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3896, PETRI_PLACES=345, PETRI_TRANSITIONS=296} [2024-06-04 14:08:29,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 14:08:29,728 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 296 transitions, 3896 flow [2024-06-04 14:08:29,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:29,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:29,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:29,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:08:29,728 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:29,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:29,729 INFO L85 PathProgramCache]: Analyzing trace with hash -101998743, now seen corresponding path program 24 times [2024-06-04 14:08:29,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:29,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220410214] [2024-06-04 14:08:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:29,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:30,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220410214] [2024-06-04 14:08:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220410214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:30,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:30,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823240823] [2024-06-04 14:08:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:30,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:30,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:30,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:30,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 296 transitions, 3896 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:30,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:30,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:30,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:31,029 INFO L124 PetriNetUnfolderBase]: 838/1531 cut-off events. [2024-06-04 14:08:31,029 INFO L125 PetriNetUnfolderBase]: For 94808/94808 co-relation queries the response was YES. [2024-06-04 14:08:31,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 1531 events. 838/1531 cut-off events. For 94808/94808 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8694 event pairs, 128 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 10899. Up to 1288 conditions per place. [2024-06-04 14:08:31,046 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 245 selfloop transitions, 64 changer transitions 0/311 dead transitions. [2024-06-04 14:08:31,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 311 transitions, 4612 flow [2024-06-04 14:08:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:08:31,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 14:08:31,047 INFO L175 Difference]: Start difference. First operand has 345 places, 296 transitions, 3896 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:08:31,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 311 transitions, 4612 flow [2024-06-04 14:08:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 311 transitions, 4466 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:31,485 INFO L231 Difference]: Finished difference. Result has 345 places, 297 transitions, 3928 flow [2024-06-04 14:08:31,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3928, PETRI_PLACES=345, PETRI_TRANSITIONS=297} [2024-06-04 14:08:31,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 14:08:31,486 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 297 transitions, 3928 flow [2024-06-04 14:08:31,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:31,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:31,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:31,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:08:31,486 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:31,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash -101752789, now seen corresponding path program 8 times [2024-06-04 14:08:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435098671] [2024-06-04 14:08:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:31,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:33,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:33,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435098671] [2024-06-04 14:08:33,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435098671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:33,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:33,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699903974] [2024-06-04 14:08:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:33,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:33,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:33,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 297 transitions, 3928 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:33,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:33,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:33,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:34,242 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-04 14:08:34,242 INFO L125 PetriNetUnfolderBase]: For 94786/94786 co-relation queries the response was YES. [2024-06-04 14:08:34,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11151 conditions, 1541 events. 844/1541 cut-off events. For 94786/94786 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8734 event pairs, 121 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 10987. Up to 1117 conditions per place. [2024-06-04 14:08:34,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 106 changer transitions 0/316 dead transitions. [2024-06-04 14:08:34,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 316 transitions, 4858 flow [2024-06-04 14:08:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:08:34,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 14:08:34,261 INFO L175 Difference]: Start difference. First operand has 345 places, 297 transitions, 3928 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:08:34,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 316 transitions, 4858 flow [2024-06-04 14:08:34,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 316 transitions, 4690 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:34,762 INFO L231 Difference]: Finished difference. Result has 348 places, 299 transitions, 4049 flow [2024-06-04 14:08:34,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4049, PETRI_PLACES=348, PETRI_TRANSITIONS=299} [2024-06-04 14:08:34,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-04 14:08:34,763 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 299 transitions, 4049 flow [2024-06-04 14:08:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:34,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:34,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:34,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:08:34,763 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:34,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash -101991799, now seen corresponding path program 9 times [2024-06-04 14:08:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785448591] [2024-06-04 14:08:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:36,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785448591] [2024-06-04 14:08:36,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785448591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:36,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:36,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278145820] [2024-06-04 14:08:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:36,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:36,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 299 transitions, 4049 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:36,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:36,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:36,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:37,049 INFO L124 PetriNetUnfolderBase]: 840/1535 cut-off events. [2024-06-04 14:08:37,049 INFO L125 PetriNetUnfolderBase]: For 87943/87943 co-relation queries the response was YES. [2024-06-04 14:08:37,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11004 conditions, 1535 events. 840/1535 cut-off events. For 87943/87943 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8723 event pairs, 125 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 10839. Up to 1272 conditions per place. [2024-06-04 14:08:37,068 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 70 changer transitions 0/315 dead transitions. [2024-06-04 14:08:37,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 315 transitions, 4751 flow [2024-06-04 14:08:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:08:37,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:08:37,069 INFO L175 Difference]: Start difference. First operand has 348 places, 299 transitions, 4049 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:08:37,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 315 transitions, 4751 flow [2024-06-04 14:08:37,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 315 transitions, 4473 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:37,568 INFO L231 Difference]: Finished difference. Result has 351 places, 299 transitions, 3919 flow [2024-06-04 14:08:37,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3919, PETRI_PLACES=351, PETRI_TRANSITIONS=299} [2024-06-04 14:08:37,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-04 14:08:37,569 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 299 transitions, 3919 flow [2024-06-04 14:08:37,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:37,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:37,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:37,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:08:37,570 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:37,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash 306562043, now seen corresponding path program 25 times [2024-06-04 14:08:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:37,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715310172] [2024-06-04 14:08:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715310172] [2024-06-04 14:08:38,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715310172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:38,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:38,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:38,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756389958] [2024-06-04 14:08:38,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:38,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:38,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:38,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 299 transitions, 3919 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:38,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:38,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:38,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:39,097 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-04 14:08:39,098 INFO L125 PetriNetUnfolderBase]: For 89504/89504 co-relation queries the response was YES. [2024-06-04 14:08:39,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10948 conditions, 1541 events. 844/1541 cut-off events. For 89504/89504 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8767 event pairs, 147 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 10782. Up to 1235 conditions per place. [2024-06-04 14:08:39,111 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 234 selfloop transitions, 76 changer transitions 0/312 dead transitions. [2024-06-04 14:08:39,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 312 transitions, 4631 flow [2024-06-04 14:08:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:08:39,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 14:08:39,113 INFO L175 Difference]: Start difference. First operand has 351 places, 299 transitions, 3919 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:08:39,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 312 transitions, 4631 flow [2024-06-04 14:08:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 312 transitions, 4452 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:39,566 INFO L231 Difference]: Finished difference. Result has 351 places, 300 transitions, 3940 flow [2024-06-04 14:08:39,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3940, PETRI_PLACES=351, PETRI_TRANSITIONS=300} [2024-06-04 14:08:39,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-04 14:08:39,566 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 300 transitions, 3940 flow [2024-06-04 14:08:39,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:39,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:39,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:08:39,567 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:39,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:39,567 INFO L85 PathProgramCache]: Analyzing trace with hash 306568987, now seen corresponding path program 10 times [2024-06-04 14:08:39,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:39,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729124252] [2024-06-04 14:08:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:39,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729124252] [2024-06-04 14:08:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729124252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:41,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91207639] [2024-06-04 14:08:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:41,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:41,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 300 transitions, 3940 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:41,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:41,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:41,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:41,744 INFO L124 PetriNetUnfolderBase]: 850/1551 cut-off events. [2024-06-04 14:08:41,744 INFO L125 PetriNetUnfolderBase]: For 89873/89873 co-relation queries the response was YES. [2024-06-04 14:08:41,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11001 conditions, 1551 events. 850/1551 cut-off events. For 89873/89873 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8831 event pairs, 146 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 10835. Up to 1339 conditions per place. [2024-06-04 14:08:41,762 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 257 selfloop transitions, 56 changer transitions 0/315 dead transitions. [2024-06-04 14:08:41,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 315 transitions, 4700 flow [2024-06-04 14:08:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:08:41,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:08:41,763 INFO L175 Difference]: Start difference. First operand has 351 places, 300 transitions, 3940 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:08:41,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 315 transitions, 4700 flow [2024-06-04 14:08:42,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 315 transitions, 4510 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:42,300 INFO L231 Difference]: Finished difference. Result has 353 places, 302 transitions, 3945 flow [2024-06-04 14:08:42,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3945, PETRI_PLACES=353, PETRI_TRANSITIONS=302} [2024-06-04 14:08:42,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-04 14:08:42,300 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 302 transitions, 3945 flow [2024-06-04 14:08:42,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:42,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:42,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:42,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:08:42,301 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:42,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash 313064107, now seen corresponding path program 11 times [2024-06-04 14:08:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49774365] [2024-06-04 14:08:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:43,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49774365] [2024-06-04 14:08:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49774365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:43,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:43,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026386906] [2024-06-04 14:08:43,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:43,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:43,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:43,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:43,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:43,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:43,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 302 transitions, 3945 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:43,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:43,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:44,411 INFO L124 PetriNetUnfolderBase]: 859/1566 cut-off events. [2024-06-04 14:08:44,411 INFO L125 PetriNetUnfolderBase]: For 95726/95726 co-relation queries the response was YES. [2024-06-04 14:08:44,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11137 conditions, 1566 events. 859/1566 cut-off events. For 95726/95726 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8924 event pairs, 146 based on Foata normal form. 3/1569 useless extension candidates. Maximal degree in co-relation 10970. Up to 1301 conditions per place. [2024-06-04 14:08:44,430 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 245 selfloop transitions, 75 changer transitions 0/322 dead transitions. [2024-06-04 14:08:44,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 322 transitions, 4973 flow [2024-06-04 14:08:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:08:44,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 14:08:44,431 INFO L175 Difference]: Start difference. First operand has 353 places, 302 transitions, 3945 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:08:44,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 322 transitions, 4973 flow [2024-06-04 14:08:44,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 322 transitions, 4768 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:44,904 INFO L231 Difference]: Finished difference. Result has 358 places, 306 transitions, 4059 flow [2024-06-04 14:08:44,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4059, PETRI_PLACES=358, PETRI_TRANSITIONS=306} [2024-06-04 14:08:44,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-04 14:08:44,904 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 306 transitions, 4059 flow [2024-06-04 14:08:44,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:44,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:44,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:08:44,905 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:44,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 313064417, now seen corresponding path program 3 times [2024-06-04 14:08:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900330363] [2024-06-04 14:08:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:44,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900330363] [2024-06-04 14:08:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900330363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:46,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021954232] [2024-06-04 14:08:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:46,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:46,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:46,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 306 transitions, 4059 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:46,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:46,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:47,051 INFO L124 PetriNetUnfolderBase]: 863/1574 cut-off events. [2024-06-04 14:08:47,051 INFO L125 PetriNetUnfolderBase]: For 96480/96480 co-relation queries the response was YES. [2024-06-04 14:08:47,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 1574 events. 863/1574 cut-off events. For 96480/96480 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8980 event pairs, 170 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 11059. Up to 1412 conditions per place. [2024-06-04 14:08:47,067 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 58 changer transitions 0/318 dead transitions. [2024-06-04 14:08:47,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 318 transitions, 4761 flow [2024-06-04 14:08:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:08:47,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 14:08:47,069 INFO L175 Difference]: Start difference. First operand has 358 places, 306 transitions, 4059 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:08:47,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 318 transitions, 4761 flow [2024-06-04 14:08:47,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 318 transitions, 4568 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:47,550 INFO L231 Difference]: Finished difference. Result has 360 places, 307 transitions, 4026 flow [2024-06-04 14:08:47,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3866, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4026, PETRI_PLACES=360, PETRI_TRANSITIONS=307} [2024-06-04 14:08:47,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-04 14:08:47,551 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 307 transitions, 4026 flow [2024-06-04 14:08:47,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:47,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:47,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:47,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:08:47,552 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:47,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1766757181, now seen corresponding path program 4 times [2024-06-04 14:08:47,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002731989] [2024-06-04 14:08:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:48,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002731989] [2024-06-04 14:08:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002731989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:48,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555268301] [2024-06-04 14:08:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:48,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:48,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:48,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 307 transitions, 4026 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:48,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:48,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:48,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:49,250 INFO L124 PetriNetUnfolderBase]: 874/1595 cut-off events. [2024-06-04 14:08:49,250 INFO L125 PetriNetUnfolderBase]: For 105825/105825 co-relation queries the response was YES. [2024-06-04 14:08:49,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11592 conditions, 1595 events. 874/1595 cut-off events. For 105825/105825 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9151 event pairs, 320 based on Foata normal form. 2/1597 useless extension candidates. Maximal degree in co-relation 11422. Up to 1532 conditions per place. [2024-06-04 14:08:49,269 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 300 selfloop transitions, 19 changer transitions 0/321 dead transitions. [2024-06-04 14:08:49,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 321 transitions, 4938 flow [2024-06-04 14:08:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-04 14:08:49,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-04 14:08:49,270 INFO L175 Difference]: Start difference. First operand has 360 places, 307 transitions, 4026 flow. Second operand 10 states and 99 transitions. [2024-06-04 14:08:49,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 321 transitions, 4938 flow [2024-06-04 14:08:49,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 321 transitions, 4788 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:49,797 INFO L231 Difference]: Finished difference. Result has 362 places, 309 transitions, 4000 flow [2024-06-04 14:08:49,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4000, PETRI_PLACES=362, PETRI_TRANSITIONS=309} [2024-06-04 14:08:49,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-04 14:08:49,797 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 309 transitions, 4000 flow [2024-06-04 14:08:49,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:49,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:49,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:49,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:08:49,798 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:49,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1767113371, now seen corresponding path program 5 times [2024-06-04 14:08:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:49,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669618229] [2024-06-04 14:08:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:51,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669618229] [2024-06-04 14:08:51,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669618229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:51,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:51,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140007123] [2024-06-04 14:08:51,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:51,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:51,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:51,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 309 transitions, 4000 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:51,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:51,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:51,644 INFO L124 PetriNetUnfolderBase]: 878/1603 cut-off events. [2024-06-04 14:08:51,644 INFO L125 PetriNetUnfolderBase]: For 108142/108142 co-relation queries the response was YES. [2024-06-04 14:08:51,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 1603 events. 878/1603 cut-off events. For 108142/108142 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9248 event pairs, 322 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 11394. Up to 1559 conditions per place. [2024-06-04 14:08:51,664 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 298 selfloop transitions, 20 changer transitions 0/320 dead transitions. [2024-06-04 14:08:51,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 320 transitions, 4700 flow [2024-06-04 14:08:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-04 14:08:51,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-04 14:08:51,680 INFO L175 Difference]: Start difference. First operand has 362 places, 309 transitions, 4000 flow. Second operand 10 states and 99 transitions. [2024-06-04 14:08:51,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 320 transitions, 4700 flow [2024-06-04 14:08:52,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 320 transitions, 4633 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:52,300 INFO L231 Difference]: Finished difference. Result has 366 places, 310 transitions, 4021 flow [2024-06-04 14:08:52,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4021, PETRI_PLACES=366, PETRI_TRANSITIONS=310} [2024-06-04 14:08:52,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-04 14:08:52,300 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 310 transitions, 4021 flow [2024-06-04 14:08:52,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:52,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:52,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:52,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:08:52,316 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:52,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash 875995389, now seen corresponding path program 6 times [2024-06-04 14:08:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:52,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894072529] [2024-06-04 14:08:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:53,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894072529] [2024-06-04 14:08:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894072529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:53,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:53,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517629295] [2024-06-04 14:08:53,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:53,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:53,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:54,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:54,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 310 transitions, 4021 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:54,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:54,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:54,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:54,697 INFO L124 PetriNetUnfolderBase]: 882/1611 cut-off events. [2024-06-04 14:08:54,697 INFO L125 PetriNetUnfolderBase]: For 110344/110344 co-relation queries the response was YES. [2024-06-04 14:08:54,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11635 conditions, 1611 events. 882/1611 cut-off events. For 110344/110344 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9273 event pairs, 189 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 11462. Up to 1482 conditions per place. [2024-06-04 14:08:54,717 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 44 changer transitions 0/322 dead transitions. [2024-06-04 14:08:54,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 322 transitions, 4727 flow [2024-06-04 14:08:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 14:08:54,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-04 14:08:54,719 INFO L175 Difference]: Start difference. First operand has 366 places, 310 transitions, 4021 flow. Second operand 11 states and 111 transitions. [2024-06-04 14:08:54,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 322 transitions, 4727 flow [2024-06-04 14:08:55,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 4655 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:55,310 INFO L231 Difference]: Finished difference. Result has 369 places, 311 transitions, 4085 flow [2024-06-04 14:08:55,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4085, PETRI_PLACES=369, PETRI_TRANSITIONS=311} [2024-06-04 14:08:55,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-04 14:08:55,311 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 311 transitions, 4085 flow [2024-06-04 14:08:55,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:55,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:55,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:55,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:08:55,311 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:55,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2062578835, now seen corresponding path program 26 times [2024-06-04 14:08:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256957826] [2024-06-04 14:08:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:56,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256957826] [2024-06-04 14:08:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256957826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:56,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417656592] [2024-06-04 14:08:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:56,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:56,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:56,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:56,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 311 transitions, 4085 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:56,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:56,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:56,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:56,660 INFO L124 PetriNetUnfolderBase]: 886/1619 cut-off events. [2024-06-04 14:08:56,660 INFO L125 PetriNetUnfolderBase]: For 113132/113132 co-relation queries the response was YES. [2024-06-04 14:08:56,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11762 conditions, 1619 events. 886/1619 cut-off events. For 113132/113132 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9366 event pairs, 323 based on Foata normal form. 2/1621 useless extension candidates. Maximal degree in co-relation 11588. Up to 1581 conditions per place. [2024-06-04 14:08:56,679 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 305 selfloop transitions, 15 changer transitions 0/322 dead transitions. [2024-06-04 14:08:56,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 322 transitions, 4799 flow [2024-06-04 14:08:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-04 14:08:56,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:08:56,680 INFO L175 Difference]: Start difference. First operand has 369 places, 311 transitions, 4085 flow. Second operand 9 states and 90 transitions. [2024-06-04 14:08:56,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 322 transitions, 4799 flow [2024-06-04 14:08:57,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 4672 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:57,120 INFO L231 Difference]: Finished difference. Result has 369 places, 312 transitions, 4038 flow [2024-06-04 14:08:57,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3958, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4038, PETRI_PLACES=369, PETRI_TRANSITIONS=312} [2024-06-04 14:08:57,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-04 14:08:57,120 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 312 transitions, 4038 flow [2024-06-04 14:08:57,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:57,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:57,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:57,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:08:57,121 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:57,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash 306384413, now seen corresponding path program 27 times [2024-06-04 14:08:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:57,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662545139] [2024-06-04 14:08:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:58,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662545139] [2024-06-04 14:08:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662545139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:58,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:58,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668137925] [2024-06-04 14:08:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:58,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:58,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:58,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:08:58,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 312 transitions, 4038 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:58,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:58,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:08:58,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:58,584 INFO L124 PetriNetUnfolderBase]: 890/1627 cut-off events. [2024-06-04 14:08:58,584 INFO L125 PetriNetUnfolderBase]: For 115193/115193 co-relation queries the response was YES. [2024-06-04 14:08:58,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11757 conditions, 1627 events. 890/1627 cut-off events. For 115193/115193 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9413 event pairs, 152 based on Foata normal form. 2/1629 useless extension candidates. Maximal degree in co-relation 11582. Up to 1428 conditions per place. [2024-06-04 14:08:58,604 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 271 selfloop transitions, 52 changer transitions 0/325 dead transitions. [2024-06-04 14:08:58,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 325 transitions, 4772 flow [2024-06-04 14:08:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:08:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:08:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:08:58,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:08:58,606 INFO L175 Difference]: Start difference. First operand has 369 places, 312 transitions, 4038 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:08:58,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 325 transitions, 4772 flow [2024-06-04 14:08:59,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 325 transitions, 4702 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:59,229 INFO L231 Difference]: Finished difference. Result has 371 places, 313 transitions, 4124 flow [2024-06-04 14:08:59,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4124, PETRI_PLACES=371, PETRI_TRANSITIONS=313} [2024-06-04 14:08:59,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-04 14:08:59,229 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 313 transitions, 4124 flow [2024-06-04 14:08:59,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:59,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:59,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:59,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:08:59,230 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:59,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:59,230 INFO L85 PathProgramCache]: Analyzing trace with hash -40263175, now seen corresponding path program 12 times [2024-06-04 14:08:59,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:59,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271821541] [2024-06-04 14:08:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:59,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271821541] [2024-06-04 14:09:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271821541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:00,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:00,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938464782] [2024-06-04 14:09:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:00,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:00,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:00,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 313 transitions, 4124 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:00,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:00,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:00,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:01,071 INFO L124 PetriNetUnfolderBase]: 896/1637 cut-off events. [2024-06-04 14:09:01,071 INFO L125 PetriNetUnfolderBase]: For 117689/117689 co-relation queries the response was YES. [2024-06-04 14:09:01,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11910 conditions, 1637 events. 896/1637 cut-off events. For 117689/117689 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9492 event pairs, 323 based on Foata normal form. 2/1639 useless extension candidates. Maximal degree in co-relation 11734. Up to 1570 conditions per place. [2024-06-04 14:09:01,093 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 24 changer transitions 0/329 dead transitions. [2024-06-04 14:09:01,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 329 transitions, 5062 flow [2024-06-04 14:09:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-04 14:09:01,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-04 14:09:01,094 INFO L175 Difference]: Start difference. First operand has 371 places, 313 transitions, 4124 flow. Second operand 11 states and 113 transitions. [2024-06-04 14:09:01,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 329 transitions, 5062 flow [2024-06-04 14:09:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 329 transitions, 4916 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:09:01,607 INFO L231 Difference]: Finished difference. Result has 375 places, 315 transitions, 4083 flow [2024-06-04 14:09:01,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3978, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4083, PETRI_PLACES=375, PETRI_TRANSITIONS=315} [2024-06-04 14:09:01,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-04 14:09:01,608 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 315 transitions, 4083 flow [2024-06-04 14:09:01,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:01,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:01,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:09:01,608 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:01,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash -40254805, now seen corresponding path program 13 times [2024-06-04 14:09:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:01,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174493602] [2024-06-04 14:09:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174493602] [2024-06-04 14:09:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174493602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:02,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:02,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:02,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140353610] [2024-06-04 14:09:02,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:02,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:02,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:02,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:02,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 315 transitions, 4083 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:02,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:02,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:02,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:03,366 INFO L124 PetriNetUnfolderBase]: 892/1631 cut-off events. [2024-06-04 14:09:03,366 INFO L125 PetriNetUnfolderBase]: For 110838/110838 co-relation queries the response was YES. [2024-06-04 14:09:03,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11551 conditions, 1631 events. 892/1631 cut-off events. For 110838/110838 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9455 event pairs, 322 based on Foata normal form. 2/1633 useless extension candidates. Maximal degree in co-relation 11374. Up to 1567 conditions per place. [2024-06-04 14:09:03,387 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 299 selfloop transitions, 25 changer transitions 0/326 dead transitions. [2024-06-04 14:09:03,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 326 transitions, 4771 flow [2024-06-04 14:09:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 14:09:03,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 14:09:03,388 INFO L175 Difference]: Start difference. First operand has 375 places, 315 transitions, 4083 flow. Second operand 10 states and 103 transitions. [2024-06-04 14:09:03,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 326 transitions, 4771 flow [2024-06-04 14:09:03,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 326 transitions, 4645 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:03,977 INFO L231 Difference]: Finished difference. Result has 375 places, 315 transitions, 4015 flow [2024-06-04 14:09:03,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4015, PETRI_PLACES=375, PETRI_TRANSITIONS=315} [2024-06-04 14:09:03,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-04 14:09:03,977 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 315 transitions, 4015 flow [2024-06-04 14:09:03,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:03,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:03,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:03,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:09:03,978 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:03,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:03,978 INFO L85 PathProgramCache]: Analyzing trace with hash 828226391, now seen corresponding path program 28 times [2024-06-04 14:09:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:03,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282565381] [2024-06-04 14:09:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:03,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282565381] [2024-06-04 14:09:04,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282565381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:04,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:04,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:04,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586960170] [2024-06-04 14:09:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:04,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:04,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 315 transitions, 4015 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:04,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:04,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:04,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:05,243 INFO L124 PetriNetUnfolderBase]: 889/1626 cut-off events. [2024-06-04 14:09:05,244 INFO L125 PetriNetUnfolderBase]: For 104114/104114 co-relation queries the response was YES. [2024-06-04 14:09:05,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11254 conditions, 1626 events. 889/1626 cut-off events. For 104114/104114 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9448 event pairs, 150 based on Foata normal form. 2/1628 useless extension candidates. Maximal degree in co-relation 11077. Up to 1418 conditions per place. [2024-06-04 14:09:05,263 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 270 selfloop transitions, 56 changer transitions 0/328 dead transitions. [2024-06-04 14:09:05,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 328 transitions, 4727 flow [2024-06-04 14:09:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:09:05,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 14:09:05,264 INFO L175 Difference]: Start difference. First operand has 375 places, 315 transitions, 4015 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:09:05,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 328 transitions, 4727 flow [2024-06-04 14:09:05,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 328 transitions, 4676 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:05,853 INFO L231 Difference]: Finished difference. Result has 375 places, 315 transitions, 4080 flow [2024-06-04 14:09:05,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4080, PETRI_PLACES=375, PETRI_TRANSITIONS=315} [2024-06-04 14:09:05,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-04 14:09:05,853 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 315 transitions, 4080 flow [2024-06-04 14:09:05,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:05,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:05,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:05,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:09:05,854 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:05,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2004732909, now seen corresponding path program 7 times [2024-06-04 14:09:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:05,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420480778] [2024-06-04 14:09:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:05,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420480778] [2024-06-04 14:09:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420480778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:07,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:07,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776432453] [2024-06-04 14:09:07,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:07,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:07,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:07,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:07,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:07,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 315 transitions, 4080 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:07,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:07,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:07,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:07,560 INFO L124 PetriNetUnfolderBase]: 886/1621 cut-off events. [2024-06-04 14:09:07,560 INFO L125 PetriNetUnfolderBase]: For 96412/96412 co-relation queries the response was YES. [2024-06-04 14:09:07,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 1621 events. 886/1621 cut-off events. For 96412/96412 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9405 event pairs, 321 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 10932. Up to 1557 conditions per place. [2024-06-04 14:09:07,581 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 22 changer transitions 0/325 dead transitions. [2024-06-04 14:09:07,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 325 transitions, 4748 flow [2024-06-04 14:09:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-04 14:09:07,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-04 14:09:07,582 INFO L175 Difference]: Start difference. First operand has 375 places, 315 transitions, 4080 flow. Second operand 10 states and 99 transitions. [2024-06-04 14:09:07,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 325 transitions, 4748 flow [2024-06-04 14:09:08,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 325 transitions, 4478 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:08,056 INFO L231 Difference]: Finished difference. Result has 377 places, 315 transitions, 3862 flow [2024-06-04 14:09:08,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3810, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3862, PETRI_PLACES=377, PETRI_TRANSITIONS=315} [2024-06-04 14:09:08,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-04 14:09:08,057 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 315 transitions, 3862 flow [2024-06-04 14:09:08,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:08,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:08,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:08,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:09:08,059 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:08,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1670333095, now seen corresponding path program 14 times [2024-06-04 14:09:08,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:08,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945449990] [2024-06-04 14:09:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:08,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:09,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:09,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945449990] [2024-06-04 14:09:09,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945449990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:09,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:09,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:09,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44633185] [2024-06-04 14:09:09,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:09,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:09,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 315 transitions, 3862 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:09,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:09,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:09,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:09,838 INFO L124 PetriNetUnfolderBase]: 882/1615 cut-off events. [2024-06-04 14:09:09,838 INFO L125 PetriNetUnfolderBase]: For 87318/87318 co-relation queries the response was YES. [2024-06-04 14:09:09,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10535 conditions, 1615 events. 882/1615 cut-off events. For 87318/87318 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9386 event pairs, 148 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 10357. Up to 1394 conditions per place. [2024-06-04 14:09:09,858 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 61 changer transitions 0/330 dead transitions. [2024-06-04 14:09:09,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 330 transitions, 4592 flow [2024-06-04 14:09:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:09:09,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:09:09,859 INFO L175 Difference]: Start difference. First operand has 377 places, 315 transitions, 3862 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:09:09,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 330 transitions, 4592 flow [2024-06-04 14:09:10,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 330 transitions, 4494 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-04 14:09:10,378 INFO L231 Difference]: Finished difference. Result has 376 places, 315 transitions, 3892 flow [2024-06-04 14:09:10,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3892, PETRI_PLACES=376, PETRI_TRANSITIONS=315} [2024-06-04 14:09:10,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-04 14:09:10,379 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 315 transitions, 3892 flow [2024-06-04 14:09:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:10,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:10,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:10,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:09:10,380 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:10,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash -325363045, now seen corresponding path program 15 times [2024-06-04 14:09:10,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:10,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373057619] [2024-06-04 14:09:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:11,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:11,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373057619] [2024-06-04 14:09:11,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373057619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:11,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:11,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:11,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209726411] [2024-06-04 14:09:11,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:11,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:11,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:11,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:11,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:12,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:12,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 315 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:12,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:12,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:12,593 INFO L124 PetriNetUnfolderBase]: 888/1625 cut-off events. [2024-06-04 14:09:12,593 INFO L125 PetriNetUnfolderBase]: For 84261/84261 co-relation queries the response was YES. [2024-06-04 14:09:12,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 1625 events. 888/1625 cut-off events. For 84261/84261 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9446 event pairs, 317 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 10460. Up to 1568 conditions per place. [2024-06-04 14:09:12,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 307 selfloop transitions, 21 changer transitions 0/330 dead transitions. [2024-06-04 14:09:12,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 330 transitions, 4662 flow [2024-06-04 14:09:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 14:09:12,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 14:09:12,610 INFO L175 Difference]: Start difference. First operand has 376 places, 315 transitions, 3892 flow. Second operand 10 states and 103 transitions. [2024-06-04 14:09:12,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 330 transitions, 4662 flow [2024-06-04 14:09:13,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 330 transitions, 4538 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:13,066 INFO L231 Difference]: Finished difference. Result has 378 places, 317 transitions, 3873 flow [2024-06-04 14:09:13,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3768, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3873, PETRI_PLACES=378, PETRI_TRANSITIONS=317} [2024-06-04 14:09:13,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-04 14:09:13,066 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 317 transitions, 3873 flow [2024-06-04 14:09:13,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:13,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:13,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:13,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:09:13,067 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:13,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:13,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1050117385, now seen corresponding path program 16 times [2024-06-04 14:09:13,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:13,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142570841] [2024-06-04 14:09:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:13,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:14,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142570841] [2024-06-04 14:09:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142570841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:14,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:14,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:14,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416013325] [2024-06-04 14:09:14,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:14,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:14,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:14,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:14,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:14,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 317 transitions, 3873 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:14,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:14,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:14,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:14,803 INFO L124 PetriNetUnfolderBase]: 894/1635 cut-off events. [2024-06-04 14:09:14,803 INFO L125 PetriNetUnfolderBase]: For 86039/86039 co-relation queries the response was YES. [2024-06-04 14:09:14,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10661 conditions, 1635 events. 894/1635 cut-off events. For 86039/86039 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9523 event pairs, 314 based on Foata normal form. 2/1637 useless extension candidates. Maximal degree in co-relation 10483. Up to 1517 conditions per place. [2024-06-04 14:09:14,822 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 295 selfloop transitions, 39 changer transitions 0/336 dead transitions. [2024-06-04 14:09:14,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 336 transitions, 4865 flow [2024-06-04 14:09:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:09:14,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:09:14,823 INFO L175 Difference]: Start difference. First operand has 378 places, 317 transitions, 3873 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:09:14,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 336 transitions, 4865 flow [2024-06-04 14:09:15,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 336 transitions, 4786 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:15,361 INFO L231 Difference]: Finished difference. Result has 381 places, 319 transitions, 3938 flow [2024-06-04 14:09:15,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3938, PETRI_PLACES=381, PETRI_TRANSITIONS=319} [2024-06-04 14:09:15,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-04 14:09:15,361 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 319 transitions, 3938 flow [2024-06-04 14:09:15,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:15,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:15,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:15,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:09:15,362 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:15,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1050117695, now seen corresponding path program 8 times [2024-06-04 14:09:15,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:15,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064135904] [2024-06-04 14:09:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:15,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064135904] [2024-06-04 14:09:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064135904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:16,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480354042] [2024-06-04 14:09:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:16,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:16,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 319 transitions, 3938 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:16,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:16,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:16,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:17,350 INFO L124 PetriNetUnfolderBase]: 896/1638 cut-off events. [2024-06-04 14:09:17,350 INFO L125 PetriNetUnfolderBase]: For 83835/83835 co-relation queries the response was YES. [2024-06-04 14:09:17,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10682 conditions, 1638 events. 896/1638 cut-off events. For 83835/83835 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9520 event pairs, 169 based on Foata normal form. 2/1640 useless extension candidates. Maximal degree in co-relation 10503. Up to 1348 conditions per place. [2024-06-04 14:09:17,370 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 95 changer transitions 0/335 dead transitions. [2024-06-04 14:09:17,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 335 transitions, 4914 flow [2024-06-04 14:09:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:09:17,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:09:17,371 INFO L175 Difference]: Start difference. First operand has 381 places, 319 transitions, 3938 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:09:17,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 335 transitions, 4914 flow [2024-06-04 14:09:17,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 335 transitions, 4770 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:17,903 INFO L231 Difference]: Finished difference. Result has 383 places, 321 transitions, 4115 flow [2024-06-04 14:09:17,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4115, PETRI_PLACES=383, PETRI_TRANSITIONS=321} [2024-06-04 14:09:17,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-04 14:09:17,904 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 321 transitions, 4115 flow [2024-06-04 14:09:17,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:17,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:17,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:17,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:09:17,905 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:17,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2062571891, now seen corresponding path program 17 times [2024-06-04 14:09:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257038322] [2024-06-04 14:09:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:17,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:19,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:19,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257038322] [2024-06-04 14:09:19,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257038322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:19,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:19,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:09:19,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840133651] [2024-06-04 14:09:19,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:19,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:09:19,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:09:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:09:19,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:19,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 321 transitions, 4115 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:19,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:19,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:19,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:19,650 INFO L124 PetriNetUnfolderBase]: 892/1632 cut-off events. [2024-06-04 14:09:19,650 INFO L125 PetriNetUnfolderBase]: For 77039/77039 co-relation queries the response was YES. [2024-06-04 14:09:19,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 1632 events. 892/1632 cut-off events. For 77039/77039 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9508 event pairs, 316 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 10405. Up to 1517 conditions per place. [2024-06-04 14:09:19,670 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 294 selfloop transitions, 36 changer transitions 0/332 dead transitions. [2024-06-04 14:09:19,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 332 transitions, 4823 flow [2024-06-04 14:09:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:09:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:09:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:09:19,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 14:09:19,672 INFO L175 Difference]: Start difference. First operand has 383 places, 321 transitions, 4115 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:09:19,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 332 transitions, 4823 flow [2024-06-04 14:09:20,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 332 transitions, 4561 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:20,141 INFO L231 Difference]: Finished difference. Result has 382 places, 321 transitions, 3931 flow [2024-06-04 14:09:20,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3931, PETRI_PLACES=382, PETRI_TRANSITIONS=321} [2024-06-04 14:09:20,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-04 14:09:20,143 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 321 transitions, 3931 flow [2024-06-04 14:09:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:20,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:20,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:20,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:09:20,143 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:20,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash -234057009, now seen corresponding path program 1 times [2024-06-04 14:09:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:20,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722464213] [2024-06-04 14:09:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:20,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:21,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722464213] [2024-06-04 14:09:21,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722464213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:21,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:21,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:21,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245766350] [2024-06-04 14:09:21,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:21,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:21,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:21,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:21,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:21,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 321 transitions, 3931 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:21,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:21,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:21,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:21,874 INFO L124 PetriNetUnfolderBase]: 896/1640 cut-off events. [2024-06-04 14:09:21,874 INFO L125 PetriNetUnfolderBase]: For 77314/77314 co-relation queries the response was YES. [2024-06-04 14:09:21,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10370 conditions, 1640 events. 896/1640 cut-off events. For 77314/77314 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9559 event pairs, 178 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 10191. Up to 1461 conditions per place. [2024-06-04 14:09:21,894 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 304 selfloop transitions, 35 changer transitions 0/341 dead transitions. [2024-06-04 14:09:21,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 341 transitions, 4681 flow [2024-06-04 14:09:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:09:21,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 14:09:21,895 INFO L175 Difference]: Start difference. First operand has 382 places, 321 transitions, 3931 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:09:21,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 341 transitions, 4681 flow [2024-06-04 14:09:22,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 341 transitions, 4602 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:22,482 INFO L231 Difference]: Finished difference. Result has 385 places, 322 transitions, 3954 flow [2024-06-04 14:09:22,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3852, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3954, PETRI_PLACES=385, PETRI_TRANSITIONS=322} [2024-06-04 14:09:22,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-04 14:09:22,483 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 322 transitions, 3954 flow [2024-06-04 14:09:22,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:22,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:22,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:22,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:09:22,484 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:22,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:22,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1184575547, now seen corresponding path program 2 times [2024-06-04 14:09:22,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:22,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123555087] [2024-06-04 14:09:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:22,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:23,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:23,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123555087] [2024-06-04 14:09:23,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123555087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:23,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:23,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:23,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222371457] [2024-06-04 14:09:23,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:23,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:23,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:23,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:23,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:23,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:23,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 322 transitions, 3954 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:23,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:23,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:23,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:24,275 INFO L124 PetriNetUnfolderBase]: 915/1681 cut-off events. [2024-06-04 14:09:24,275 INFO L125 PetriNetUnfolderBase]: For 100107/100107 co-relation queries the response was YES. [2024-06-04 14:09:24,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11087 conditions, 1681 events. 915/1681 cut-off events. For 100107/100107 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9853 event pairs, 169 based on Foata normal form. 2/1683 useless extension candidates. Maximal degree in co-relation 10908. Up to 1413 conditions per place. [2024-06-04 14:09:24,295 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 40 changer transitions 0/345 dead transitions. [2024-06-04 14:09:24,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 345 transitions, 4916 flow [2024-06-04 14:09:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:09:24,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:09:24,296 INFO L175 Difference]: Start difference. First operand has 385 places, 322 transitions, 3954 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:09:24,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 345 transitions, 4916 flow [2024-06-04 14:09:24,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 345 transitions, 4824 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:24,846 INFO L231 Difference]: Finished difference. Result has 387 places, 323 transitions, 3978 flow [2024-06-04 14:09:24,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3862, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3978, PETRI_PLACES=387, PETRI_TRANSITIONS=323} [2024-06-04 14:09:24,847 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-04 14:09:24,847 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 323 transitions, 3978 flow [2024-06-04 14:09:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:24,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:24,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:24,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:09:24,847 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:24,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1570528011, now seen corresponding path program 3 times [2024-06-04 14:09:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191758207] [2024-06-04 14:09:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:26,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:26,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191758207] [2024-06-04 14:09:26,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191758207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:26,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:26,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:26,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731679572] [2024-06-04 14:09:26,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:26,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:26,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:26,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:26,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 323 transitions, 3978 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:26,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:26,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:26,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:27,109 INFO L124 PetriNetUnfolderBase]: 919/1689 cut-off events. [2024-06-04 14:09:27,110 INFO L125 PetriNetUnfolderBase]: For 104117/104117 co-relation queries the response was YES. [2024-06-04 14:09:27,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11166 conditions, 1689 events. 919/1689 cut-off events. For 104117/104117 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9890 event pairs, 180 based on Foata normal form. 2/1691 useless extension candidates. Maximal degree in co-relation 10986. Up to 1528 conditions per place. [2024-06-04 14:09:27,130 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 49 changer transitions 0/341 dead transitions. [2024-06-04 14:09:27,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 341 transitions, 4742 flow [2024-06-04 14:09:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:09:27,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:09:27,131 INFO L175 Difference]: Start difference. First operand has 387 places, 323 transitions, 3978 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:09:27,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 341 transitions, 4742 flow [2024-06-04 14:09:27,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 341 transitions, 4636 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:27,742 INFO L231 Difference]: Finished difference. Result has 389 places, 324 transitions, 4006 flow [2024-06-04 14:09:27,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4006, PETRI_PLACES=389, PETRI_TRANSITIONS=324} [2024-06-04 14:09:27,743 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-04 14:09:27,743 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 324 transitions, 4006 flow [2024-06-04 14:09:27,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:27,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:27,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:27,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:09:27,743 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:27,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1570533808, now seen corresponding path program 1 times [2024-06-04 14:09:27,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:27,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715661790] [2024-06-04 14:09:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:29,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:29,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715661790] [2024-06-04 14:09:29,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715661790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:29,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:29,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472981198] [2024-06-04 14:09:29,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:29,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:29,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:29,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:29,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:29,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:29,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 324 transitions, 4006 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:29,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:29,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:29,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:29,777 INFO L124 PetriNetUnfolderBase]: 907/1661 cut-off events. [2024-06-04 14:09:29,778 INFO L125 PetriNetUnfolderBase]: For 74963/74963 co-relation queries the response was YES. [2024-06-04 14:09:29,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10559 conditions, 1661 events. 907/1661 cut-off events. For 74963/74963 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9716 event pairs, 170 based on Foata normal form. 1/1662 useless extension candidates. Maximal degree in co-relation 10378. Up to 1485 conditions per place. [2024-06-04 14:09:29,798 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 282 selfloop transitions, 58 changer transitions 1/343 dead transitions. [2024-06-04 14:09:29,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 343 transitions, 4844 flow [2024-06-04 14:09:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:09:29,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 14:09:29,799 INFO L175 Difference]: Start difference. First operand has 389 places, 324 transitions, 4006 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:09:29,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 343 transitions, 4844 flow [2024-06-04 14:09:30,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 343 transitions, 4722 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:30,362 INFO L231 Difference]: Finished difference. Result has 391 places, 326 transitions, 4097 flow [2024-06-04 14:09:30,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4097, PETRI_PLACES=391, PETRI_TRANSITIONS=326} [2024-06-04 14:09:30,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-04 14:09:30,363 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 326 transitions, 4097 flow [2024-06-04 14:09:30,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:30,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:30,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:30,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:09:30,364 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:30,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1570533591, now seen corresponding path program 4 times [2024-06-04 14:09:30,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:30,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790487290] [2024-06-04 14:09:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:30,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790487290] [2024-06-04 14:09:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790487290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:31,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:31,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:31,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773537610] [2024-06-04 14:09:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:31,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:31,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:31,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 326 transitions, 4097 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:31,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:31,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:31,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:32,374 INFO L124 PetriNetUnfolderBase]: 911/1669 cut-off events. [2024-06-04 14:09:32,374 INFO L125 PetriNetUnfolderBase]: For 80833/80833 co-relation queries the response was YES. [2024-06-04 14:09:32,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10638 conditions, 1669 events. 911/1669 cut-off events. For 80833/80833 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9790 event pairs, 172 based on Foata normal form. 2/1671 useless extension candidates. Maximal degree in co-relation 10456. Up to 1499 conditions per place. [2024-06-04 14:09:32,395 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 55 changer transitions 0/344 dead transitions. [2024-06-04 14:09:32,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 344 transitions, 4875 flow [2024-06-04 14:09:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:09:32,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 14:09:32,397 INFO L175 Difference]: Start difference. First operand has 391 places, 326 transitions, 4097 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:09:32,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 344 transitions, 4875 flow [2024-06-04 14:09:32,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 344 transitions, 4702 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:32,982 INFO L231 Difference]: Finished difference. Result has 393 places, 327 transitions, 4072 flow [2024-06-04 14:09:32,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4072, PETRI_PLACES=393, PETRI_TRANSITIONS=327} [2024-06-04 14:09:32,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:09:32,982 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 327 transitions, 4072 flow [2024-06-04 14:09:32,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:32,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:32,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:09:32,983 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:32,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1050838179, now seen corresponding path program 5 times [2024-06-04 14:09:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915884385] [2024-06-04 14:09:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:34,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915884385] [2024-06-04 14:09:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915884385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:34,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:34,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789135050] [2024-06-04 14:09:34,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:34,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:34,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:34,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 327 transitions, 4072 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:34,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:34,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:34,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:34,876 INFO L124 PetriNetUnfolderBase]: 915/1677 cut-off events. [2024-06-04 14:09:34,876 INFO L125 PetriNetUnfolderBase]: For 82722/82722 co-relation queries the response was YES. [2024-06-04 14:09:34,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10677 conditions, 1677 events. 915/1677 cut-off events. For 82722/82722 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9842 event pairs, 168 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 10494. Up to 1509 conditions per place. [2024-06-04 14:09:34,896 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 298 selfloop transitions, 45 changer transitions 0/345 dead transitions. [2024-06-04 14:09:34,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 345 transitions, 4838 flow [2024-06-04 14:09:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:09:34,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 14:09:34,897 INFO L175 Difference]: Start difference. First operand has 393 places, 327 transitions, 4072 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:09:34,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 345 transitions, 4838 flow [2024-06-04 14:09:35,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 345 transitions, 4704 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:35,592 INFO L231 Difference]: Finished difference. Result has 395 places, 328 transitions, 4067 flow [2024-06-04 14:09:35,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4067, PETRI_PLACES=395, PETRI_TRANSITIONS=328} [2024-06-04 14:09:35,592 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-04 14:09:35,592 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 328 transitions, 4067 flow [2024-06-04 14:09:35,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:35,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:35,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:35,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:09:35,593 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:35,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:35,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1179694395, now seen corresponding path program 6 times [2024-06-04 14:09:35,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:35,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827517992] [2024-06-04 14:09:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:36,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827517992] [2024-06-04 14:09:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827517992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:36,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:36,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:36,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21548792] [2024-06-04 14:09:36,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:36,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:36,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:36,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:36,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 328 transitions, 4067 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:36,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:36,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:36,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:37,514 INFO L124 PetriNetUnfolderBase]: 919/1685 cut-off events. [2024-06-04 14:09:37,515 INFO L125 PetriNetUnfolderBase]: For 84718/84718 co-relation queries the response was YES. [2024-06-04 14:09:37,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 1685 events. 919/1685 cut-off events. For 84718/84718 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9912 event pairs, 186 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 10528. Up to 1544 conditions per place. [2024-06-04 14:09:37,536 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 37 changer transitions 0/346 dead transitions. [2024-06-04 14:09:37,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 346 transitions, 4829 flow [2024-06-04 14:09:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:09:37,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 14:09:37,537 INFO L175 Difference]: Start difference. First operand has 395 places, 328 transitions, 4067 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:09:37,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 346 transitions, 4829 flow [2024-06-04 14:09:38,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 346 transitions, 4712 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:38,057 INFO L231 Difference]: Finished difference. Result has 397 places, 329 transitions, 4064 flow [2024-06-04 14:09:38,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4064, PETRI_PLACES=397, PETRI_TRANSITIONS=329} [2024-06-04 14:09:38,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-04 14:09:38,058 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 329 transitions, 4064 flow [2024-06-04 14:09:38,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:38,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:38,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:09:38,059 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:38,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1355313541, now seen corresponding path program 7 times [2024-06-04 14:09:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114421397] [2024-06-04 14:09:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:38,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:39,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:39,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114421397] [2024-06-04 14:09:39,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114421397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:39,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:39,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:39,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235939791] [2024-06-04 14:09:39,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:39,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:39,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:39,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:39,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 329 transitions, 4064 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:39,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:39,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:39,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:40,175 INFO L124 PetriNetUnfolderBase]: 923/1693 cut-off events. [2024-06-04 14:09:40,175 INFO L125 PetriNetUnfolderBase]: For 86299/86299 co-relation queries the response was YES. [2024-06-04 14:09:40,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10753 conditions, 1693 events. 923/1693 cut-off events. For 86299/86299 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9919 event pairs, 178 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 10568. Up to 1522 conditions per place. [2024-06-04 14:09:40,197 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 304 selfloop transitions, 41 changer transitions 0/347 dead transitions. [2024-06-04 14:09:40,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 347 transitions, 4830 flow [2024-06-04 14:09:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:09:40,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 14:09:40,198 INFO L175 Difference]: Start difference. First operand has 397 places, 329 transitions, 4064 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:09:40,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 347 transitions, 4830 flow [2024-06-04 14:09:40,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 347 transitions, 4726 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:40,943 INFO L231 Difference]: Finished difference. Result has 399 places, 330 transitions, 4086 flow [2024-06-04 14:09:40,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4086, PETRI_PLACES=399, PETRI_TRANSITIONS=330} [2024-06-04 14:09:40,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-04 14:09:40,944 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 330 transitions, 4086 flow [2024-06-04 14:09:40,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:40,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:40,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:40,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:09:40,945 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:40,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1467779225, now seen corresponding path program 8 times [2024-06-04 14:09:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:40,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915215776] [2024-06-04 14:09:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:40,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915215776] [2024-06-04 14:09:42,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915215776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:42,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:42,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042148724] [2024-06-04 14:09:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:42,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:42,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:42,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:42,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:42,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 330 transitions, 4086 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:42,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:42,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:42,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:42,831 INFO L124 PetriNetUnfolderBase]: 927/1701 cut-off events. [2024-06-04 14:09:42,832 INFO L125 PetriNetUnfolderBase]: For 88201/88201 co-relation queries the response was YES. [2024-06-04 14:09:42,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10820 conditions, 1701 events. 927/1701 cut-off events. For 88201/88201 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10003 event pairs, 125 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 10634. Up to 1445 conditions per place. [2024-06-04 14:09:42,853 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 310 selfloop transitions, 38 changer transitions 0/350 dead transitions. [2024-06-04 14:09:42,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 350 transitions, 4864 flow [2024-06-04 14:09:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 14:09:42,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-04 14:09:42,854 INFO L175 Difference]: Start difference. First operand has 399 places, 330 transitions, 4086 flow. Second operand 11 states and 111 transitions. [2024-06-04 14:09:42,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 350 transitions, 4864 flow [2024-06-04 14:09:43,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 350 transitions, 4748 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:43,446 INFO L231 Difference]: Finished difference. Result has 401 places, 331 transitions, 4090 flow [2024-06-04 14:09:43,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4090, PETRI_PLACES=401, PETRI_TRANSITIONS=331} [2024-06-04 14:09:43,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-04 14:09:43,458 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 331 transitions, 4090 flow [2024-06-04 14:09:43,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:43,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:43,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:43,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:09:43,458 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:43,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash 373600403, now seen corresponding path program 9 times [2024-06-04 14:09:43,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:43,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121937669] [2024-06-04 14:09:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:43,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:44,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:44,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121937669] [2024-06-04 14:09:44,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121937669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:44,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:44,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482438945] [2024-06-04 14:09:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:44,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:44,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:44,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:44,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 331 transitions, 4090 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:44,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:44,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:44,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:45,259 INFO L124 PetriNetUnfolderBase]: 931/1709 cut-off events. [2024-06-04 14:09:45,259 INFO L125 PetriNetUnfolderBase]: For 88291/88291 co-relation queries the response was YES. [2024-06-04 14:09:45,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10858 conditions, 1709 events. 931/1709 cut-off events. For 88291/88291 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10108 event pairs, 191 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 10671. Up to 1558 conditions per place. [2024-06-04 14:09:45,285 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 313 selfloop transitions, 36 changer transitions 0/351 dead transitions. [2024-06-04 14:09:45,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 351 transitions, 4874 flow [2024-06-04 14:09:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:09:45,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:09:45,287 INFO L175 Difference]: Start difference. First operand has 401 places, 331 transitions, 4090 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:09:45,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 351 transitions, 4874 flow [2024-06-04 14:09:45,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 351 transitions, 4766 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:45,903 INFO L231 Difference]: Finished difference. Result has 403 places, 332 transitions, 4098 flow [2024-06-04 14:09:45,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4098, PETRI_PLACES=403, PETRI_TRANSITIONS=332} [2024-06-04 14:09:45,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-04 14:09:45,903 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 332 transitions, 4098 flow [2024-06-04 14:09:45,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:45,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:45,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:45,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:09:45,904 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:45,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash 377175323, now seen corresponding path program 10 times [2024-06-04 14:09:45,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471118752] [2024-06-04 14:09:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:47,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471118752] [2024-06-04 14:09:47,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471118752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:47,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:47,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:47,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071046405] [2024-06-04 14:09:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:47,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:47,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:47,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:47,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:47,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 332 transitions, 4098 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:47,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:47,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:47,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:47,858 INFO L124 PetriNetUnfolderBase]: 935/1717 cut-off events. [2024-06-04 14:09:47,858 INFO L125 PetriNetUnfolderBase]: For 90109/90109 co-relation queries the response was YES. [2024-06-04 14:09:47,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 1717 events. 935/1717 cut-off events. For 90109/90109 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10150 event pairs, 191 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 10709. Up to 1573 conditions per place. [2024-06-04 14:09:47,876 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 311 selfloop transitions, 38 changer transitions 0/351 dead transitions. [2024-06-04 14:09:47,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 351 transitions, 4888 flow [2024-06-04 14:09:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:09:47,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 14:09:47,877 INFO L175 Difference]: Start difference. First operand has 403 places, 332 transitions, 4098 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:09:47,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 351 transitions, 4888 flow [2024-06-04 14:09:48,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 351 transitions, 4782 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:48,514 INFO L231 Difference]: Finished difference. Result has 405 places, 333 transitions, 4114 flow [2024-06-04 14:09:48,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4114, PETRI_PLACES=405, PETRI_TRANSITIONS=333} [2024-06-04 14:09:48,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-04 14:09:48,514 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 333 transitions, 4114 flow [2024-06-04 14:09:48,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:48,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:48,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:48,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:09:48,515 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:48,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:48,515 INFO L85 PathProgramCache]: Analyzing trace with hash 377325270, now seen corresponding path program 2 times [2024-06-04 14:09:48,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:48,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776727822] [2024-06-04 14:09:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:48,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:49,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:49,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776727822] [2024-06-04 14:09:49,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776727822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:49,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:49,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:49,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025441666] [2024-06-04 14:09:49,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:49,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:49,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:49,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:49,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:49,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:49,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 333 transitions, 4114 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:49,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:49,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:49,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:50,557 INFO L124 PetriNetUnfolderBase]: 938/1722 cut-off events. [2024-06-04 14:09:50,557 INFO L125 PetriNetUnfolderBase]: For 86620/86620 co-relation queries the response was YES. [2024-06-04 14:09:50,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10946 conditions, 1722 events. 938/1722 cut-off events. For 86620/86620 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10183 event pairs, 191 based on Foata normal form. 1/1723 useless extension candidates. Maximal degree in co-relation 10757. Up to 1569 conditions per place. [2024-06-04 14:09:50,579 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 304 selfloop transitions, 47 changer transitions 0/353 dead transitions. [2024-06-04 14:09:50,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 353 transitions, 4976 flow [2024-06-04 14:09:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:09:50,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:09:50,580 INFO L175 Difference]: Start difference. First operand has 405 places, 333 transitions, 4114 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:09:50,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 353 transitions, 4976 flow [2024-06-04 14:09:51,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 353 transitions, 4864 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:51,130 INFO L231 Difference]: Finished difference. Result has 407 places, 335 transitions, 4192 flow [2024-06-04 14:09:51,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4192, PETRI_PLACES=407, PETRI_TRANSITIONS=335} [2024-06-04 14:09:51,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-04 14:09:51,131 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 335 transitions, 4192 flow [2024-06-04 14:09:51,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:51,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:51,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:51,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:09:51,131 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:51,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash 377325053, now seen corresponding path program 11 times [2024-06-04 14:09:51,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:51,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701318939] [2024-06-04 14:09:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:51,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701318939] [2024-06-04 14:09:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701318939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:52,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:52,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642905903] [2024-06-04 14:09:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:52,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:52,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:52,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 335 transitions, 4192 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:52,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:52,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:52,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:53,287 INFO L124 PetriNetUnfolderBase]: 942/1730 cut-off events. [2024-06-04 14:09:53,287 INFO L125 PetriNetUnfolderBase]: For 93420/93420 co-relation queries the response was YES. [2024-06-04 14:09:53,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11019 conditions, 1730 events. 942/1730 cut-off events. For 93420/93420 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10258 event pairs, 188 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 10829. Up to 1580 conditions per place. [2024-06-04 14:09:53,309 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 43 changer transitions 0/354 dead transitions. [2024-06-04 14:09:53,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 354 transitions, 5006 flow [2024-06-04 14:09:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:09:53,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:09:53,310 INFO L175 Difference]: Start difference. First operand has 407 places, 335 transitions, 4192 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:09:53,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 354 transitions, 5006 flow [2024-06-04 14:09:54,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 354 transitions, 4850 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:54,122 INFO L231 Difference]: Finished difference. Result has 409 places, 336 transitions, 4171 flow [2024-06-04 14:09:54,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4036, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4171, PETRI_PLACES=409, PETRI_TRANSITIONS=336} [2024-06-04 14:09:54,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-04 14:09:54,122 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 336 transitions, 4171 flow [2024-06-04 14:09:54,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:54,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:54,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:54,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:09:54,123 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:54,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash -292058821, now seen corresponding path program 12 times [2024-06-04 14:09:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442537922] [2024-06-04 14:09:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:55,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:55,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442537922] [2024-06-04 14:09:55,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442537922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:55,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:55,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026094404] [2024-06-04 14:09:55,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:55,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:55,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:55,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 336 transitions, 4171 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:55,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:55,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:55,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:56,216 INFO L124 PetriNetUnfolderBase]: 946/1738 cut-off events. [2024-06-04 14:09:56,216 INFO L125 PetriNetUnfolderBase]: For 95473/95473 co-relation queries the response was YES. [2024-06-04 14:09:56,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1738 events. 946/1738 cut-off events. For 95473/95473 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10327 event pairs, 186 based on Foata normal form. 2/1740 useless extension candidates. Maximal degree in co-relation 10877. Up to 1572 conditions per place. [2024-06-04 14:09:56,238 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 310 selfloop transitions, 43 changer transitions 0/355 dead transitions. [2024-06-04 14:09:56,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 355 transitions, 4981 flow [2024-06-04 14:09:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:09:56,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:09:56,240 INFO L175 Difference]: Start difference. First operand has 409 places, 336 transitions, 4171 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:09:56,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 355 transitions, 4981 flow [2024-06-04 14:09:56,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 355 transitions, 4858 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:56,969 INFO L231 Difference]: Finished difference. Result has 411 places, 337 transitions, 4184 flow [2024-06-04 14:09:56,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4184, PETRI_PLACES=411, PETRI_TRANSITIONS=337} [2024-06-04 14:09:56,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-04 14:09:56,970 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 337 transitions, 4184 flow [2024-06-04 14:09:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:56,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:56,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:09:56,971 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:56,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash -147952965, now seen corresponding path program 1 times [2024-06-04 14:09:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10402631] [2024-06-04 14:09:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10402631] [2024-06-04 14:09:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10402631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597534119] [2024-06-04 14:09:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:58,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:58,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:58,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:58,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:58,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:09:58,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 337 transitions, 4184 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:58,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:58,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:09:58,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:59,310 INFO L124 PetriNetUnfolderBase]: 962/1776 cut-off events. [2024-06-04 14:09:59,310 INFO L125 PetriNetUnfolderBase]: For 138159/138159 co-relation queries the response was YES. [2024-06-04 14:09:59,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11189 conditions, 1776 events. 962/1776 cut-off events. For 138159/138159 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10597 event pairs, 195 based on Foata normal form. 10/1786 useless extension candidates. Maximal degree in co-relation 10997. Up to 1591 conditions per place. [2024-06-04 14:09:59,333 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 310 selfloop transitions, 38 changer transitions 11/361 dead transitions. [2024-06-04 14:09:59,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 361 transitions, 5038 flow [2024-06-04 14:09:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 14:09:59,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 14:09:59,334 INFO L175 Difference]: Start difference. First operand has 411 places, 337 transitions, 4184 flow. Second operand 12 states and 131 transitions. [2024-06-04 14:09:59,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 361 transitions, 5038 flow [2024-06-04 14:10:00,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 361 transitions, 4912 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:00,105 INFO L231 Difference]: Finished difference. Result has 414 places, 334 transitions, 4090 flow [2024-06-04 14:10:00,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4090, PETRI_PLACES=414, PETRI_TRANSITIONS=334} [2024-06-04 14:10:00,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-04 14:10:00,106 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 334 transitions, 4090 flow [2024-06-04 14:10:00,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:00,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:00,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:00,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:10:00,106 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:00,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash 904056583, now seen corresponding path program 13 times [2024-06-04 14:10:00,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:00,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092345142] [2024-06-04 14:10:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:00,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:01,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:01,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092345142] [2024-06-04 14:10:01,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092345142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:01,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:01,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:01,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034970702] [2024-06-04 14:10:01,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:01,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:01,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:01,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:01,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 334 transitions, 4090 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:01,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:01,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:01,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:02,090 INFO L124 PetriNetUnfolderBase]: 940/1734 cut-off events. [2024-06-04 14:10:02,090 INFO L125 PetriNetUnfolderBase]: For 98319/98319 co-relation queries the response was YES. [2024-06-04 14:10:02,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10948 conditions, 1734 events. 940/1734 cut-off events. For 98319/98319 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10333 event pairs, 176 based on Foata normal form. 2/1736 useless extension candidates. Maximal degree in co-relation 10755. Up to 1553 conditions per place. [2024-06-04 14:10:02,112 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 48 changer transitions 0/353 dead transitions. [2024-06-04 14:10:02,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 353 transitions, 4912 flow [2024-06-04 14:10:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:10:02,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:10:02,113 INFO L175 Difference]: Start difference. First operand has 414 places, 334 transitions, 4090 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:10:02,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 353 transitions, 4912 flow [2024-06-04 14:10:02,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 353 transitions, 4820 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-04 14:10:02,786 INFO L231 Difference]: Finished difference. Result has 412 places, 335 transitions, 4146 flow [2024-06-04 14:10:02,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4146, PETRI_PLACES=412, PETRI_TRANSITIONS=335} [2024-06-04 14:10:02,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-04 14:10:02,786 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 335 transitions, 4146 flow [2024-06-04 14:10:02,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:02,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:02,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:02,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:10:02,787 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:02,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1573429297, now seen corresponding path program 14 times [2024-06-04 14:10:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:02,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476498622] [2024-06-04 14:10:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:02,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:03,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476498622] [2024-06-04 14:10:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476498622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:03,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:03,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:10:03,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689629421] [2024-06-04 14:10:03,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:03,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:10:03,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:10:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:10:04,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:04,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 335 transitions, 4146 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:04,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:04,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:04,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:04,704 INFO L124 PetriNetUnfolderBase]: 980/1814 cut-off events. [2024-06-04 14:10:04,704 INFO L125 PetriNetUnfolderBase]: For 164835/164835 co-relation queries the response was YES. [2024-06-04 14:10:04,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12771 conditions, 1814 events. 980/1814 cut-off events. For 164835/164835 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10873 event pairs, 192 based on Foata normal form. 2/1816 useless extension candidates. Maximal degree in co-relation 12578. Up to 1445 conditions per place. [2024-06-04 14:10:04,729 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 299 selfloop transitions, 59 changer transitions 0/360 dead transitions. [2024-06-04 14:10:04,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 360 transitions, 5292 flow [2024-06-04 14:10:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:10:04,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 14:10:04,730 INFO L175 Difference]: Start difference. First operand has 412 places, 335 transitions, 4146 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:10:04,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 360 transitions, 5292 flow [2024-06-04 14:10:05,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 360 transitions, 5154 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:05,970 INFO L231 Difference]: Finished difference. Result has 414 places, 336 transitions, 4180 flow [2024-06-04 14:10:05,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4180, PETRI_PLACES=414, PETRI_TRANSITIONS=336} [2024-06-04 14:10:05,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-04 14:10:05,971 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 336 transitions, 4180 flow [2024-06-04 14:10:05,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:05,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:05,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:05,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:10:05,971 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:05,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 704754793, now seen corresponding path program 15 times [2024-06-04 14:10:05,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:05,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461487474] [2024-06-04 14:10:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:05,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:07,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:07,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461487474] [2024-06-04 14:10:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461487474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:07,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:10:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64536158] [2024-06-04 14:10:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:07,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:10:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:10:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:10:07,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:07,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 336 transitions, 4180 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:07,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:07,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:07,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:08,236 INFO L124 PetriNetUnfolderBase]: 984/1822 cut-off events. [2024-06-04 14:10:08,237 INFO L125 PetriNetUnfolderBase]: For 168163/168163 co-relation queries the response was YES. [2024-06-04 14:10:08,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12864 conditions, 1822 events. 984/1822 cut-off events. For 168163/168163 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10906 event pairs, 202 based on Foata normal form. 2/1824 useless extension candidates. Maximal degree in co-relation 12670. Up to 1666 conditions per place. [2024-06-04 14:10:08,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 42 changer transitions 0/355 dead transitions. [2024-06-04 14:10:08,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 355 transitions, 5010 flow [2024-06-04 14:10:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:10:08,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 14:10:08,262 INFO L175 Difference]: Start difference. First operand has 414 places, 336 transitions, 4180 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:10:08,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 355 transitions, 5010 flow [2024-06-04 14:10:09,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 355 transitions, 4848 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:09,483 INFO L231 Difference]: Finished difference. Result has 416 places, 337 transitions, 4158 flow [2024-06-04 14:10:09,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4018, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4158, PETRI_PLACES=416, PETRI_TRANSITIONS=337} [2024-06-04 14:10:09,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 385 predicate places. [2024-06-04 14:10:09,489 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 337 transitions, 4158 flow [2024-06-04 14:10:09,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:09,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:09,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:09,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:10:09,490 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:09,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1374127507, now seen corresponding path program 16 times [2024-06-04 14:10:09,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:09,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612014629] [2024-06-04 14:10:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:09,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612014629] [2024-06-04 14:10:10,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612014629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:10,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:10,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:10,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869718079] [2024-06-04 14:10:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:10,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:10,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:10,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 337 transitions, 4158 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:10,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:10,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:10,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:11,572 INFO L124 PetriNetUnfolderBase]: 952/1758 cut-off events. [2024-06-04 14:10:11,572 INFO L125 PetriNetUnfolderBase]: For 103182/103182 co-relation queries the response was YES. [2024-06-04 14:10:11,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11169 conditions, 1758 events. 952/1758 cut-off events. For 103182/103182 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10537 event pairs, 182 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 10974. Up to 1588 conditions per place. [2024-06-04 14:10:11,597 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2024-06-04 14:10:11,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 356 transitions, 4984 flow [2024-06-04 14:10:11,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:10:11,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:10:11,599 INFO L175 Difference]: Start difference. First operand has 416 places, 337 transitions, 4158 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:10:11,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 356 transitions, 4984 flow [2024-06-04 14:10:12,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 356 transitions, 4854 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:12,358 INFO L231 Difference]: Finished difference. Result has 418 places, 338 transitions, 4172 flow [2024-06-04 14:10:12,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4028, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4172, PETRI_PLACES=418, PETRI_TRANSITIONS=338} [2024-06-04 14:10:12,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-06-04 14:10:12,359 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 338 transitions, 4172 flow [2024-06-04 14:10:12,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:12,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:12,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:10:12,359 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:12,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash 704605063, now seen corresponding path program 17 times [2024-06-04 14:10:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325957167] [2024-06-04 14:10:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325957167] [2024-06-04 14:10:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325957167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:13,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393133528] [2024-06-04 14:10:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:13,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:13,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:13,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 338 transitions, 4172 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:13,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:13,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:13,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:14,413 INFO L124 PetriNetUnfolderBase]: 971/1799 cut-off events. [2024-06-04 14:10:14,413 INFO L125 PetriNetUnfolderBase]: For 135424/135424 co-relation queries the response was YES. [2024-06-04 14:10:14,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 1799 events. 971/1799 cut-off events. For 135424/135424 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10778 event pairs, 184 based on Foata normal form. 2/1801 useless extension candidates. Maximal degree in co-relation 11772. Up to 1606 conditions per place. [2024-06-04 14:10:14,437 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 318 selfloop transitions, 40 changer transitions 0/360 dead transitions. [2024-06-04 14:10:14,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 360 transitions, 5232 flow [2024-06-04 14:10:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:10:14,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:10:14,438 INFO L175 Difference]: Start difference. First operand has 418 places, 338 transitions, 4172 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:10:14,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 360 transitions, 5232 flow [2024-06-04 14:10:15,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 360 transitions, 5098 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:15,369 INFO L231 Difference]: Finished difference. Result has 420 places, 339 transitions, 4178 flow [2024-06-04 14:10:15,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4038, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4178, PETRI_PLACES=420, PETRI_TRANSITIONS=339} [2024-06-04 14:10:15,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-04 14:10:15,374 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 339 transitions, 4178 flow [2024-06-04 14:10:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:15,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:15,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:10:15,375 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:15,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:15,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1379705213, now seen corresponding path program 2 times [2024-06-04 14:10:15,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:15,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689598517] [2024-06-04 14:10:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:17,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:17,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689598517] [2024-06-04 14:10:17,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689598517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:17,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:17,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:17,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220671196] [2024-06-04 14:10:17,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:17,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:17,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:17,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:17,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 339 transitions, 4178 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:17,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:17,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:17,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:18,458 INFO L124 PetriNetUnfolderBase]: 987/1835 cut-off events. [2024-06-04 14:10:18,459 INFO L125 PetriNetUnfolderBase]: For 182380/182380 co-relation queries the response was YES. [2024-06-04 14:10:18,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12063 conditions, 1835 events. 987/1835 cut-off events. For 182380/182380 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11083 event pairs, 201 based on Foata normal form. 10/1845 useless extension candidates. Maximal degree in co-relation 11866. Up to 1625 conditions per place. [2024-06-04 14:10:18,483 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 38 changer transitions 16/363 dead transitions. [2024-06-04 14:10:18,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 363 transitions, 5042 flow [2024-06-04 14:10:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:10:18,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:10:18,484 INFO L175 Difference]: Start difference. First operand has 420 places, 339 transitions, 4178 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:10:18,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 363 transitions, 5042 flow [2024-06-04 14:10:19,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 363 transitions, 4912 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:19,529 INFO L231 Difference]: Finished difference. Result has 423 places, 333 transitions, 4056 flow [2024-06-04 14:10:19,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4056, PETRI_PLACES=423, PETRI_TRANSITIONS=333} [2024-06-04 14:10:19,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-04 14:10:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 333 transitions, 4056 flow [2024-06-04 14:10:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:19,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:19,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:19,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:10:19,530 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:19,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1573644623, now seen corresponding path program 3 times [2024-06-04 14:10:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977695936] [2024-06-04 14:10:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977695936] [2024-06-04 14:10:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977695936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893229312] [2024-06-04 14:10:21,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:21,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:21,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:21,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 333 transitions, 4056 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:21,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:21,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:21,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:22,043 INFO L124 PetriNetUnfolderBase]: 952/1770 cut-off events. [2024-06-04 14:10:22,044 INFO L125 PetriNetUnfolderBase]: For 151974/151974 co-relation queries the response was YES. [2024-06-04 14:10:22,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 1770 events. 952/1770 cut-off events. For 151974/151974 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10644 event pairs, 186 based on Foata normal form. 10/1780 useless extension candidates. Maximal degree in co-relation 10836. Up to 1495 conditions per place. [2024-06-04 14:10:22,067 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 53 changer transitions 11/357 dead transitions. [2024-06-04 14:10:22,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 357 transitions, 4908 flow [2024-06-04 14:10:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:10:22,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:10:22,069 INFO L175 Difference]: Start difference. First operand has 423 places, 333 transitions, 4056 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:10:22,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 357 transitions, 4908 flow [2024-06-04 14:10:22,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 357 transitions, 4818 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:22,754 INFO L231 Difference]: Finished difference. Result has 419 places, 330 transitions, 4036 flow [2024-06-04 14:10:22,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4036, PETRI_PLACES=419, PETRI_TRANSITIONS=330} [2024-06-04 14:10:22,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-04 14:10:22,755 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 330 transitions, 4036 flow [2024-06-04 14:10:22,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:22,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:22,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:22,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:10:22,755 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:22,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1580786527, now seen corresponding path program 18 times [2024-06-04 14:10:22,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:22,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059785353] [2024-06-04 14:10:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:22,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:23,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059785353] [2024-06-04 14:10:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059785353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:23,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:23,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:10:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50273398] [2024-06-04 14:10:23,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:24,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:10:24,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:24,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:10:24,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:10:24,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:24,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 330 transitions, 4036 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:24,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:24,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:24,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:24,608 INFO L124 PetriNetUnfolderBase]: 930/1728 cut-off events. [2024-06-04 14:10:24,608 INFO L125 PetriNetUnfolderBase]: For 104822/104822 co-relation queries the response was YES. [2024-06-04 14:10:24,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10901 conditions, 1728 events. 930/1728 cut-off events. For 104822/104822 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10387 event pairs, 182 based on Foata normal form. 2/1730 useless extension candidates. Maximal degree in co-relation 10704. Up to 1522 conditions per place. [2024-06-04 14:10:24,631 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 296 selfloop transitions, 51 changer transitions 0/349 dead transitions. [2024-06-04 14:10:24,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 349 transitions, 4858 flow [2024-06-04 14:10:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:24,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:10:24,633 INFO L175 Difference]: Start difference. First operand has 419 places, 330 transitions, 4036 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:24,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 349 transitions, 4858 flow [2024-06-04 14:10:25,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 349 transitions, 4746 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:25,446 INFO L231 Difference]: Finished difference. Result has 417 places, 331 transitions, 4086 flow [2024-06-04 14:10:25,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4086, PETRI_PLACES=417, PETRI_TRANSITIONS=331} [2024-06-04 14:10:25,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-04 14:10:25,447 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 331 transitions, 4086 flow [2024-06-04 14:10:25,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:25,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:25,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:25,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:10:25,447 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:25,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1581063233, now seen corresponding path program 4 times [2024-06-04 14:10:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308482272] [2024-06-04 14:10:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:25,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:26,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:26,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308482272] [2024-06-04 14:10:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308482272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:26,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:26,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321841281] [2024-06-04 14:10:26,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:26,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:26,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:26,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 331 transitions, 4086 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:26,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:27,664 INFO L124 PetriNetUnfolderBase]: 979/1831 cut-off events. [2024-06-04 14:10:27,664 INFO L125 PetriNetUnfolderBase]: For 197686/197686 co-relation queries the response was YES. [2024-06-04 14:10:27,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12431 conditions, 1831 events. 979/1831 cut-off events. For 197686/197686 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11098 event pairs, 195 based on Foata normal form. 8/1839 useless extension candidates. Maximal degree in co-relation 12234. Up to 1425 conditions per place. [2024-06-04 14:10:27,686 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 299 selfloop transitions, 53 changer transitions 7/361 dead transitions. [2024-06-04 14:10:27,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 361 transitions, 5210 flow [2024-06-04 14:10:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:10:27,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:10:27,687 INFO L175 Difference]: Start difference. First operand has 417 places, 331 transitions, 4086 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:10:27,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 361 transitions, 5210 flow [2024-06-04 14:10:28,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 361 transitions, 5058 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:28,727 INFO L231 Difference]: Finished difference. Result has 420 places, 329 transitions, 4007 flow [2024-06-04 14:10:28,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4007, PETRI_PLACES=420, PETRI_TRANSITIONS=329} [2024-06-04 14:10:28,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-04 14:10:28,728 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 329 transitions, 4007 flow [2024-06-04 14:10:28,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:28,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:28,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:28,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:10:28,728 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:28,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1580794463, now seen corresponding path program 5 times [2024-06-04 14:10:28,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:28,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34178122] [2024-06-04 14:10:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:30,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:30,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34178122] [2024-06-04 14:10:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34178122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:30,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:30,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:30,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268312740] [2024-06-04 14:10:30,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:30,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:30,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:30,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:30,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:30,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 329 transitions, 4007 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:30,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:30,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:30,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:30,910 INFO L124 PetriNetUnfolderBase]: 961/1797 cut-off events. [2024-06-04 14:10:30,910 INFO L125 PetriNetUnfolderBase]: For 212166/212166 co-relation queries the response was YES. [2024-06-04 14:10:30,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12158 conditions, 1797 events. 961/1797 cut-off events. For 212166/212166 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10829 event pairs, 201 based on Foata normal form. 10/1807 useless extension candidates. Maximal degree in co-relation 11960. Up to 1537 conditions per place. [2024-06-04 14:10:30,937 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 288 selfloop transitions, 47 changer transitions 16/353 dead transitions. [2024-06-04 14:10:30,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 353 transitions, 4851 flow [2024-06-04 14:10:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:10:30,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 14:10:30,939 INFO L175 Difference]: Start difference. First operand has 420 places, 329 transitions, 4007 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:10:30,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 353 transitions, 4851 flow [2024-06-04 14:10:31,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 353 transitions, 4739 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:10:31,938 INFO L231 Difference]: Finished difference. Result has 419 places, 323 transitions, 3911 flow [2024-06-04 14:10:31,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3911, PETRI_PLACES=419, PETRI_TRANSITIONS=323} [2024-06-04 14:10:31,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-04 14:10:31,939 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 323 transitions, 3911 flow [2024-06-04 14:10:31,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:31,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:31,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:31,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:10:31,939 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:31,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1581053933, now seen corresponding path program 6 times [2024-06-04 14:10:31,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:31,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945442764] [2024-06-04 14:10:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945442764] [2024-06-04 14:10:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945442764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:33,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:33,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096464364] [2024-06-04 14:10:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:33,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:33,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:33,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:33,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 323 transitions, 3911 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:33,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:33,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:33,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:33,940 INFO L124 PetriNetUnfolderBase]: 929/1741 cut-off events. [2024-06-04 14:10:33,940 INFO L125 PetriNetUnfolderBase]: For 187454/187454 co-relation queries the response was YES. [2024-06-04 14:10:33,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11353 conditions, 1741 events. 929/1741 cut-off events. For 187454/187454 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10451 event pairs, 193 based on Foata normal form. 10/1751 useless extension candidates. Maximal degree in co-relation 11156. Up to 1488 conditions per place. [2024-06-04 14:10:33,967 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 285 selfloop transitions, 46 changer transitions 14/347 dead transitions. [2024-06-04 14:10:33,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 347 transitions, 4743 flow [2024-06-04 14:10:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 14:10:33,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 14:10:33,968 INFO L175 Difference]: Start difference. First operand has 419 places, 323 transitions, 3911 flow. Second operand 12 states and 131 transitions. [2024-06-04 14:10:33,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 347 transitions, 4743 flow [2024-06-04 14:10:35,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 347 transitions, 4627 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 14:10:35,090 INFO L231 Difference]: Finished difference. Result has 414 places, 319 transitions, 3831 flow [2024-06-04 14:10:35,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3831, PETRI_PLACES=414, PETRI_TRANSITIONS=319} [2024-06-04 14:10:35,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-04 14:10:35,094 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 319 transitions, 3831 flow [2024-06-04 14:10:35,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:35,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:35,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:35,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:10:35,095 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:35,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1852271439, now seen corresponding path program 19 times [2024-06-04 14:10:35,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:35,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021695921] [2024-06-04 14:10:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:35,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:36,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021695921] [2024-06-04 14:10:36,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021695921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:36,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:36,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668519106] [2024-06-04 14:10:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:36,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:36,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:36,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:36,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:36,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 319 transitions, 3831 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:36,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:36,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:36,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:37,211 INFO L124 PetriNetUnfolderBase]: 912/1708 cut-off events. [2024-06-04 14:10:37,212 INFO L125 PetriNetUnfolderBase]: For 171287/171287 co-relation queries the response was YES. [2024-06-04 14:10:37,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 1708 events. 912/1708 cut-off events. For 171287/171287 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10197 event pairs, 125 based on Foata normal form. 8/1716 useless extension candidates. Maximal degree in co-relation 10914. Up to 1344 conditions per place. [2024-06-04 14:10:37,234 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 273 selfloop transitions, 26 changer transitions 37/338 dead transitions. [2024-06-04 14:10:37,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 338 transitions, 4607 flow [2024-06-04 14:10:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 14:10:37,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 14:10:37,235 INFO L175 Difference]: Start difference. First operand has 414 places, 319 transitions, 3831 flow. Second operand 10 states and 104 transitions. [2024-06-04 14:10:37,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 338 transitions, 4607 flow [2024-06-04 14:10:38,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 338 transitions, 4487 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:38,206 INFO L231 Difference]: Finished difference. Result has 409 places, 295 transitions, 3499 flow [2024-06-04 14:10:38,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3711, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3499, PETRI_PLACES=409, PETRI_TRANSITIONS=295} [2024-06-04 14:10:38,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-04 14:10:38,207 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 295 transitions, 3499 flow [2024-06-04 14:10:38,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:38,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:38,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:38,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:10:38,211 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:38,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1155874371, now seen corresponding path program 20 times [2024-06-04 14:10:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:38,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128965413] [2024-06-04 14:10:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128965413] [2024-06-04 14:10:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128965413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109473833] [2024-06-04 14:10:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:39,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:39,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:39,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 295 transitions, 3499 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:39,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:39,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:39,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:40,417 INFO L124 PetriNetUnfolderBase]: 811/1511 cut-off events. [2024-06-04 14:10:40,417 INFO L125 PetriNetUnfolderBase]: For 136350/136350 co-relation queries the response was YES. [2024-06-04 14:10:40,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10175 conditions, 1511 events. 811/1511 cut-off events. For 136350/136350 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8716 event pairs, 140 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 9998. Up to 1291 conditions per place. [2024-06-04 14:10:40,436 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 68 changer transitions 1/310 dead transitions. [2024-06-04 14:10:40,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 310 transitions, 4225 flow [2024-06-04 14:10:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:10:40,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 14:10:40,437 INFO L175 Difference]: Start difference. First operand has 409 places, 295 transitions, 3499 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:10:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 310 transitions, 4225 flow [2024-06-04 14:10:41,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 310 transitions, 4100 flow, removed 11 selfloop flow, removed 19 redundant places. [2024-06-04 14:10:41,261 INFO L231 Difference]: Finished difference. Result has 380 places, 296 transitions, 3575 flow [2024-06-04 14:10:41,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3575, PETRI_PLACES=380, PETRI_TRANSITIONS=296} [2024-06-04 14:10:41,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-04 14:10:41,262 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 296 transitions, 3575 flow [2024-06-04 14:10:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:41,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:41,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:41,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:10:41,263 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:41,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1152149721, now seen corresponding path program 21 times [2024-06-04 14:10:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:41,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927584401] [2024-06-04 14:10:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927584401] [2024-06-04 14:10:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927584401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959534808] [2024-06-04 14:10:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:42,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:42,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 296 transitions, 3575 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:42,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:42,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:42,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:43,144 INFO L124 PetriNetUnfolderBase]: 815/1519 cut-off events. [2024-06-04 14:10:43,144 INFO L125 PetriNetUnfolderBase]: For 123245/123245 co-relation queries the response was YES. [2024-06-04 14:10:43,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 1519 events. 815/1519 cut-off events. For 123245/123245 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8768 event pairs, 138 based on Foata normal form. 2/1521 useless extension candidates. Maximal degree in co-relation 10034. Up to 1320 conditions per place. [2024-06-04 14:10:43,162 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 44 changer transitions 1/311 dead transitions. [2024-06-04 14:10:43,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 311 transitions, 4277 flow [2024-06-04 14:10:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 14:10:43,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-04 14:10:43,163 INFO L175 Difference]: Start difference. First operand has 380 places, 296 transitions, 3575 flow. Second operand 10 states and 102 transitions. [2024-06-04 14:10:43,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 311 transitions, 4277 flow [2024-06-04 14:10:43,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 311 transitions, 4096 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:43,851 INFO L231 Difference]: Finished difference. Result has 382 places, 297 transitions, 3544 flow [2024-06-04 14:10:43,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3544, PETRI_PLACES=382, PETRI_TRANSITIONS=297} [2024-06-04 14:10:43,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-04 14:10:43,851 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 297 transitions, 3544 flow [2024-06-04 14:10:43,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:43,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:43,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:43,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:10:43,852 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:43,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1155724641, now seen corresponding path program 22 times [2024-06-04 14:10:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:43,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532895717] [2024-06-04 14:10:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:43,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:45,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:45,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532895717] [2024-06-04 14:10:45,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532895717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:45,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:45,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:45,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48752114] [2024-06-04 14:10:45,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:45,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:45,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:45,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:45,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 297 transitions, 3544 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:45,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:45,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:45,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:45,870 INFO L124 PetriNetUnfolderBase]: 819/1527 cut-off events. [2024-06-04 14:10:45,871 INFO L125 PetriNetUnfolderBase]: For 123117/123117 co-relation queries the response was YES. [2024-06-04 14:10:45,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10195 conditions, 1527 events. 819/1527 cut-off events. For 123117/123117 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8839 event pairs, 136 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 10024. Up to 1325 conditions per place. [2024-06-04 14:10:45,898 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 52 changer transitions 1/312 dead transitions. [2024-06-04 14:10:45,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 312 transitions, 4256 flow [2024-06-04 14:10:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 14:10:45,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 14:10:45,900 INFO L175 Difference]: Start difference. First operand has 382 places, 297 transitions, 3544 flow. Second operand 10 states and 104 transitions. [2024-06-04 14:10:45,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 312 transitions, 4256 flow [2024-06-04 14:10:46,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 312 transitions, 4122 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:46,709 INFO L231 Difference]: Finished difference. Result has 384 places, 298 transitions, 3575 flow [2024-06-04 14:10:46,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3412, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3575, PETRI_PLACES=384, PETRI_TRANSITIONS=298} [2024-06-04 14:10:46,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-04 14:10:46,709 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 298 transitions, 3575 flow [2024-06-04 14:10:46,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:46,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:46,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:46,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:10:46,710 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:46,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1155874588, now seen corresponding path program 3 times [2024-06-04 14:10:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:46,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612049483] [2024-06-04 14:10:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:46,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612049483] [2024-06-04 14:10:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612049483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:48,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097068009] [2024-06-04 14:10:48,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:48,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:48,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 298 transitions, 3575 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:48,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:48,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:48,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:48,801 INFO L124 PetriNetUnfolderBase]: 817/1524 cut-off events. [2024-06-04 14:10:48,802 INFO L125 PetriNetUnfolderBase]: For 111604/111604 co-relation queries the response was YES. [2024-06-04 14:10:48,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9986 conditions, 1524 events. 817/1524 cut-off events. For 111604/111604 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8819 event pairs, 146 based on Foata normal form. 1/1525 useless extension candidates. Maximal degree in co-relation 9814. Up to 1307 conditions per place. [2024-06-04 14:10:48,821 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 72 changer transitions 2/312 dead transitions. [2024-06-04 14:10:48,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 312 transitions, 4259 flow [2024-06-04 14:10:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:10:48,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:10:48,822 INFO L175 Difference]: Start difference. First operand has 384 places, 298 transitions, 3575 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:10:48,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 312 transitions, 4259 flow [2024-06-04 14:10:49,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 312 transitions, 4076 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:49,510 INFO L231 Difference]: Finished difference. Result has 386 places, 298 transitions, 3548 flow [2024-06-04 14:10:49,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=386, PETRI_TRANSITIONS=298} [2024-06-04 14:10:49,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-04 14:10:49,510 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 298 transitions, 3548 flow [2024-06-04 14:10:49,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:49,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:49,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:49,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:10:49,511 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:49,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1155868791, now seen corresponding path program 23 times [2024-06-04 14:10:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266399782] [2024-06-04 14:10:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:50,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266399782] [2024-06-04 14:10:50,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266399782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:50,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:50,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542046208] [2024-06-04 14:10:50,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:50,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:50,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:50,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 298 transitions, 3548 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:50,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:50,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:50,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:51,582 INFO L124 PetriNetUnfolderBase]: 821/1532 cut-off events. [2024-06-04 14:10:51,582 INFO L125 PetriNetUnfolderBase]: For 116207/116207 co-relation queries the response was YES. [2024-06-04 14:10:51,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10035 conditions, 1532 events. 821/1532 cut-off events. For 116207/116207 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8877 event pairs, 142 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 9862. Up to 1278 conditions per place. [2024-06-04 14:10:51,611 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 67 changer transitions 1/313 dead transitions. [2024-06-04 14:10:51,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 313 transitions, 4268 flow [2024-06-04 14:10:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:10:51,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 14:10:51,612 INFO L175 Difference]: Start difference. First operand has 386 places, 298 transitions, 3548 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:10:51,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 313 transitions, 4268 flow [2024-06-04 14:10:52,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 313 transitions, 4060 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:52,626 INFO L231 Difference]: Finished difference. Result has 387 places, 299 transitions, 3532 flow [2024-06-04 14:10:52,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3532, PETRI_PLACES=387, PETRI_TRANSITIONS=299} [2024-06-04 14:10:52,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-04 14:10:52,626 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 299 transitions, 3532 flow [2024-06-04 14:10:52,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:52,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:52,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:52,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:10:52,627 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:52,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:52,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1524009177, now seen corresponding path program 24 times [2024-06-04 14:10:52,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:52,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962715195] [2024-06-04 14:10:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:52,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:53,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962715195] [2024-06-04 14:10:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962715195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:53,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:53,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711432292] [2024-06-04 14:10:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:53,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:53,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 299 transitions, 3532 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:53,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:53,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:53,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:54,384 INFO L124 PetriNetUnfolderBase]: 825/1540 cut-off events. [2024-06-04 14:10:54,385 INFO L125 PetriNetUnfolderBase]: For 117304/117304 co-relation queries the response was YES. [2024-06-04 14:10:54,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 1540 events. 825/1540 cut-off events. For 117304/117304 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8960 event pairs, 147 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 9942. Up to 1351 conditions per place. [2024-06-04 14:10:54,404 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 41 changer transitions 1/317 dead transitions. [2024-06-04 14:10:54,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 317 transitions, 4263 flow [2024-06-04 14:10:54,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 14:10:54,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 14:10:54,406 INFO L175 Difference]: Start difference. First operand has 387 places, 299 transitions, 3532 flow. Second operand 10 states and 105 transitions. [2024-06-04 14:10:54,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 317 transitions, 4263 flow [2024-06-04 14:10:54,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 317 transitions, 4081 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:54,997 INFO L231 Difference]: Finished difference. Result has 389 places, 300 transitions, 3492 flow [2024-06-04 14:10:54,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3492, PETRI_PLACES=389, PETRI_TRANSITIONS=300} [2024-06-04 14:10:54,998 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-04 14:10:54,998 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 300 transitions, 3492 flow [2024-06-04 14:10:54,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:54,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:54,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:54,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:10:54,998 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:54,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:54,999 INFO L85 PathProgramCache]: Analyzing trace with hash -20338237, now seen corresponding path program 25 times [2024-06-04 14:10:54,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:54,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164844755] [2024-06-04 14:10:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:54,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:56,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:56,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164844755] [2024-06-04 14:10:56,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164844755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:56,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:56,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:56,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501787138] [2024-06-04 14:10:56,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:56,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:56,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:56,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:56,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:56,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:56,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 300 transitions, 3492 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:56,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:56,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:56,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:56,717 INFO L124 PetriNetUnfolderBase]: 829/1548 cut-off events. [2024-06-04 14:10:56,717 INFO L125 PetriNetUnfolderBase]: For 117470/117470 co-relation queries the response was YES. [2024-06-04 14:10:56,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10093 conditions, 1548 events. 829/1548 cut-off events. For 117470/117470 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9028 event pairs, 149 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 9918. Up to 1373 conditions per place. [2024-06-04 14:10:56,738 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 268 selfloop transitions, 47 changer transitions 1/318 dead transitions. [2024-06-04 14:10:56,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 318 transitions, 4233 flow [2024-06-04 14:10:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:10:56,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 14:10:56,739 INFO L175 Difference]: Start difference. First operand has 389 places, 300 transitions, 3492 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:10:56,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 318 transitions, 4233 flow [2024-06-04 14:10:57,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 318 transitions, 4103 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:10:57,464 INFO L231 Difference]: Finished difference. Result has 391 places, 301 transitions, 3516 flow [2024-06-04 14:10:57,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3516, PETRI_PLACES=391, PETRI_TRANSITIONS=301} [2024-06-04 14:10:57,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-04 14:10:57,464 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 301 transitions, 3516 flow [2024-06-04 14:10:57,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:57,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:57,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:57,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:10:57,465 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:57,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1527728247, now seen corresponding path program 26 times [2024-06-04 14:10:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:57,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454365648] [2024-06-04 14:10:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:58,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:58,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454365648] [2024-06-04 14:10:58,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454365648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:58,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:58,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:10:58,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843424446] [2024-06-04 14:10:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:10:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:10:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:10:59,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:10:59,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 301 transitions, 3516 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:59,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:59,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:10:59,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:59,586 INFO L124 PetriNetUnfolderBase]: 833/1556 cut-off events. [2024-06-04 14:10:59,587 INFO L125 PetriNetUnfolderBase]: For 117391/117391 co-relation queries the response was YES. [2024-06-04 14:10:59,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10142 conditions, 1556 events. 833/1556 cut-off events. For 117391/117391 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9103 event pairs, 149 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 9966. Up to 1375 conditions per place. [2024-06-04 14:10:59,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 53 changer transitions 1/319 dead transitions. [2024-06-04 14:10:59,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 319 transitions, 4267 flow [2024-06-04 14:10:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:10:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:10:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:10:59,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 14:10:59,610 INFO L175 Difference]: Start difference. First operand has 391 places, 301 transitions, 3516 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:10:59,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 319 transitions, 4267 flow [2024-06-04 14:11:00,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 319 transitions, 4125 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:00,224 INFO L231 Difference]: Finished difference. Result has 393 places, 302 transitions, 3540 flow [2024-06-04 14:11:00,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3540, PETRI_PLACES=393, PETRI_TRANSITIONS=302} [2024-06-04 14:11:00,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:11:00,225 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 302 transitions, 3540 flow [2024-06-04 14:11:00,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:00,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:00,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:00,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:11:00,226 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:00,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1527734044, now seen corresponding path program 4 times [2024-06-04 14:11:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:00,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601068007] [2024-06-04 14:11:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:00,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601068007] [2024-06-04 14:11:02,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601068007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:02,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:02,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:02,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262763574] [2024-06-04 14:11:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:02,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:02,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:02,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 302 transitions, 3540 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:02,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:02,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:02,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:03,064 INFO L124 PetriNetUnfolderBase]: 831/1553 cut-off events. [2024-06-04 14:11:03,064 INFO L125 PetriNetUnfolderBase]: For 105768/105768 co-relation queries the response was YES. [2024-06-04 14:11:03,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9925 conditions, 1553 events. 831/1553 cut-off events. For 105768/105768 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9091 event pairs, 151 based on Foata normal form. 1/1554 useless extension candidates. Maximal degree in co-relation 9748. Up to 1368 conditions per place. [2024-06-04 14:11:03,085 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 62 changer transitions 1/319 dead transitions. [2024-06-04 14:11:03,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 319 transitions, 4255 flow [2024-06-04 14:11:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:11:03,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:11:03,086 INFO L175 Difference]: Start difference. First operand has 393 places, 302 transitions, 3540 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:11:03,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 319 transitions, 4255 flow [2024-06-04 14:11:03,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 319 transitions, 4101 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:03,750 INFO L231 Difference]: Finished difference. Result has 395 places, 302 transitions, 3521 flow [2024-06-04 14:11:03,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3521, PETRI_PLACES=395, PETRI_TRANSITIONS=302} [2024-06-04 14:11:03,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-04 14:11:03,751 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 302 transitions, 3521 flow [2024-06-04 14:11:03,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:03,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:03,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:03,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:11:03,752 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:03,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1527733827, now seen corresponding path program 27 times [2024-06-04 14:11:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893785514] [2024-06-04 14:11:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:03,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:05,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893785514] [2024-06-04 14:11:05,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893785514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:05,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:05,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:05,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702967027] [2024-06-04 14:11:05,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:05,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:05,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:05,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 302 transitions, 3521 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:05,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:05,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:05,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:05,886 INFO L124 PetriNetUnfolderBase]: 835/1561 cut-off events. [2024-06-04 14:11:05,886 INFO L125 PetriNetUnfolderBase]: For 110824/110824 co-relation queries the response was YES. [2024-06-04 14:11:05,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9974 conditions, 1561 events. 835/1561 cut-off events. For 110824/110824 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9174 event pairs, 151 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 9796. Up to 1370 conditions per place. [2024-06-04 14:11:05,908 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 58 changer transitions 1/320 dead transitions. [2024-06-04 14:11:05,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 320 transitions, 4280 flow [2024-06-04 14:11:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:05,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:11:05,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 14:11:05,909 INFO L175 Difference]: Start difference. First operand has 395 places, 302 transitions, 3521 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:11:05,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 320 transitions, 4280 flow [2024-06-04 14:11:06,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 320 transitions, 3808 flow, removed 34 selfloop flow, removed 15 redundant places. [2024-06-04 14:11:06,577 INFO L231 Difference]: Finished difference. Result has 390 places, 303 transitions, 3225 flow [2024-06-04 14:11:06,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3225, PETRI_PLACES=390, PETRI_TRANSITIONS=303} [2024-06-04 14:11:06,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-04 14:11:06,578 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 303 transitions, 3225 flow [2024-06-04 14:11:06,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:06,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:06,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:06,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:11:06,579 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:06,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:06,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1671834103, now seen corresponding path program 7 times [2024-06-04 14:11:06,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:06,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877636270] [2024-06-04 14:11:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:06,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:08,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877636270] [2024-06-04 14:11:08,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877636270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:08,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:08,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:08,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054674161] [2024-06-04 14:11:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:08,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:08,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:08,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 303 transitions, 3225 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:09,134 INFO L124 PetriNetUnfolderBase]: 855/1607 cut-off events. [2024-06-04 14:11:09,134 INFO L125 PetriNetUnfolderBase]: For 150913/150913 co-relation queries the response was YES. [2024-06-04 14:11:09,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9766 conditions, 1607 events. 855/1607 cut-off events. For 150913/150913 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9516 event pairs, 160 based on Foata normal form. 10/1617 useless extension candidates. Maximal degree in co-relation 9593. Up to 1390 conditions per place. [2024-06-04 14:11:09,154 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 270 selfloop transitions, 46 changer transitions 10/328 dead transitions. [2024-06-04 14:11:09,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 328 transitions, 4078 flow [2024-06-04 14:11:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:11:09,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:11:09,155 INFO L175 Difference]: Start difference. First operand has 390 places, 303 transitions, 3225 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:11:09,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 328 transitions, 4078 flow [2024-06-04 14:11:09,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 328 transitions, 3870 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:09,776 INFO L231 Difference]: Finished difference. Result has 393 places, 302 transitions, 3146 flow [2024-06-04 14:11:09,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3146, PETRI_PLACES=393, PETRI_TRANSITIONS=302} [2024-06-04 14:11:09,776 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:11:09,776 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 302 transitions, 3146 flow [2024-06-04 14:11:09,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:09,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:09,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:09,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:11:09,777 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:09,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1770425435, now seen corresponding path program 28 times [2024-06-04 14:11:09,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:09,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285458287] [2024-06-04 14:11:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:11,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:11,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285458287] [2024-06-04 14:11:11,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285458287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:11,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:11,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:11,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29921980] [2024-06-04 14:11:11,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:11,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:11,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:11,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:11,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:11,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 302 transitions, 3146 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:11,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:11,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:11,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:11,779 INFO L124 PetriNetUnfolderBase]: 833/1565 cut-off events. [2024-06-04 14:11:11,779 INFO L125 PetriNetUnfolderBase]: For 109799/109799 co-relation queries the response was YES. [2024-06-04 14:11:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 1565 events. 833/1565 cut-off events. For 109799/109799 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9219 event pairs, 140 based on Foata normal form. 2/1567 useless extension candidates. Maximal degree in co-relation 9258. Up to 1377 conditions per place. [2024-06-04 14:11:11,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 48 changer transitions 1/318 dead transitions. [2024-06-04 14:11:11,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 318 transitions, 3894 flow [2024-06-04 14:11:11,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 14:11:11,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 14:11:11,801 INFO L175 Difference]: Start difference. First operand has 393 places, 302 transitions, 3146 flow. Second operand 10 states and 105 transitions. [2024-06-04 14:11:11,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 318 transitions, 3894 flow [2024-06-04 14:11:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 318 transitions, 3792 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:12,356 INFO L231 Difference]: Finished difference. Result has 393 places, 303 transitions, 3196 flow [2024-06-04 14:11:12,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3196, PETRI_PLACES=393, PETRI_TRANSITIONS=303} [2024-06-04 14:11:12,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:11:12,356 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 303 transitions, 3196 flow [2024-06-04 14:11:12,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:12,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:12,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:12,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:11:12,357 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:12,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1770431015, now seen corresponding path program 29 times [2024-06-04 14:11:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:12,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654500211] [2024-06-04 14:11:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:12,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:13,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654500211] [2024-06-04 14:11:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654500211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:13,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:13,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:11:13,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287298522] [2024-06-04 14:11:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:13,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:11:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:11:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:11:13,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:13,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 303 transitions, 3196 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:13,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:13,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:13,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:14,255 INFO L124 PetriNetUnfolderBase]: 837/1573 cut-off events. [2024-06-04 14:11:14,256 INFO L125 PetriNetUnfolderBase]: For 111187/111187 co-relation queries the response was YES. [2024-06-04 14:11:14,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9557 conditions, 1573 events. 837/1573 cut-off events. For 111187/111187 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9283 event pairs, 138 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 9382. Up to 1371 conditions per place. [2024-06-04 14:11:14,271 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 49 changer transitions 1/319 dead transitions. [2024-06-04 14:11:14,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 319 transitions, 3940 flow [2024-06-04 14:11:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 14:11:14,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 14:11:14,272 INFO L175 Difference]: Start difference. First operand has 393 places, 303 transitions, 3196 flow. Second operand 10 states and 104 transitions. [2024-06-04 14:11:14,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 319 transitions, 3940 flow [2024-06-04 14:11:14,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 319 transitions, 3792 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:14,858 INFO L231 Difference]: Finished difference. Result has 394 places, 304 transitions, 3206 flow [2024-06-04 14:11:14,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3206, PETRI_PLACES=394, PETRI_TRANSITIONS=304} [2024-06-04 14:11:14,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-04 14:11:14,858 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 304 transitions, 3206 flow [2024-06-04 14:11:14,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:14,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:14,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:14,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:11:14,859 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:14,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:14,859 INFO L85 PathProgramCache]: Analyzing trace with hash 976469797, now seen corresponding path program 30 times [2024-06-04 14:11:14,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:14,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452760934] [2024-06-04 14:11:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:16,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:16,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452760934] [2024-06-04 14:11:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452760934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:16,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105440182] [2024-06-04 14:11:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:16,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:16,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:16,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 304 transitions, 3206 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:16,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:16,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:16,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:16,683 INFO L124 PetriNetUnfolderBase]: 841/1581 cut-off events. [2024-06-04 14:11:16,684 INFO L125 PetriNetUnfolderBase]: For 111591/111591 co-relation queries the response was YES. [2024-06-04 14:11:16,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 1581 events. 841/1581 cut-off events. For 111591/111591 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9380 event pairs, 134 based on Foata normal form. 2/1583 useless extension candidates. Maximal degree in co-relation 9424. Up to 1379 conditions per place. [2024-06-04 14:11:16,705 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 48 changer transitions 1/320 dead transitions. [2024-06-04 14:11:16,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 320 transitions, 3946 flow [2024-06-04 14:11:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:16,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 14:11:16,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 14:11:16,706 INFO L175 Difference]: Start difference. First operand has 394 places, 304 transitions, 3206 flow. Second operand 10 states and 103 transitions. [2024-06-04 14:11:16,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 320 transitions, 3946 flow [2024-06-04 14:11:17,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 320 transitions, 3798 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:17,402 INFO L231 Difference]: Finished difference. Result has 396 places, 305 transitions, 3216 flow [2024-06-04 14:11:17,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3216, PETRI_PLACES=396, PETRI_TRANSITIONS=305} [2024-06-04 14:11:17,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-04 14:11:17,402 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 305 transitions, 3216 flow [2024-06-04 14:11:17,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:17,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:17,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:17,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:11:17,403 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:17,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1183272967, now seen corresponding path program 31 times [2024-06-04 14:11:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:17,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728034368] [2024-06-04 14:11:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:17,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728034368] [2024-06-04 14:11:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728034368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261149125] [2024-06-04 14:11:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:19,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:19,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:19,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 305 transitions, 3216 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:19,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:19,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:19,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:20,311 INFO L124 PetriNetUnfolderBase]: 845/1589 cut-off events. [2024-06-04 14:11:20,311 INFO L125 PetriNetUnfolderBase]: For 111779/111779 co-relation queries the response was YES. [2024-06-04 14:11:20,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9636 conditions, 1589 events. 845/1589 cut-off events. For 111779/111779 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9429 event pairs, 134 based on Foata normal form. 2/1591 useless extension candidates. Maximal degree in co-relation 9460. Up to 1281 conditions per place. [2024-06-04 14:11:20,331 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 247 selfloop transitions, 71 changer transitions 1/321 dead transitions. [2024-06-04 14:11:20,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 321 transitions, 3974 flow [2024-06-04 14:11:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:11:20,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 14:11:20,333 INFO L175 Difference]: Start difference. First operand has 396 places, 305 transitions, 3216 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:11:20,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 321 transitions, 3974 flow [2024-06-04 14:11:21,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 321 transitions, 3828 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:21,045 INFO L231 Difference]: Finished difference. Result has 398 places, 306 transitions, 3272 flow [2024-06-04 14:11:21,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3272, PETRI_PLACES=398, PETRI_TRANSITIONS=306} [2024-06-04 14:11:21,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-04 14:11:21,046 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 306 transitions, 3272 flow [2024-06-04 14:11:21,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:21,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:21,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:21,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:11:21,046 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:21,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:21,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1563764059, now seen corresponding path program 8 times [2024-06-04 14:11:21,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:21,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70398963] [2024-06-04 14:11:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:22,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:22,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70398963] [2024-06-04 14:11:22,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70398963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:22,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:22,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:22,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073693852] [2024-06-04 14:11:22,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:22,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:22,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:22,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:23,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:23,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 306 transitions, 3272 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:23,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:23,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:23,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:23,724 INFO L124 PetriNetUnfolderBase]: 861/1625 cut-off events. [2024-06-04 14:11:23,725 INFO L125 PetriNetUnfolderBase]: For 150607/150607 co-relation queries the response was YES. [2024-06-04 14:11:23,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9781 conditions, 1625 events. 861/1625 cut-off events. For 150607/150607 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9696 event pairs, 140 based on Foata normal form. 10/1635 useless extension candidates. Maximal degree in co-relation 9604. Up to 1223 conditions per place. [2024-06-04 14:11:23,744 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 72 changer transitions 12/325 dead transitions. [2024-06-04 14:11:23,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 325 transitions, 4040 flow [2024-06-04 14:11:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:23,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:11:23,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 14:11:23,745 INFO L175 Difference]: Start difference. First operand has 398 places, 306 transitions, 3272 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:11:23,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 325 transitions, 4040 flow [2024-06-04 14:11:24,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 325 transitions, 3850 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:24,422 INFO L231 Difference]: Finished difference. Result has 400 places, 299 transitions, 3178 flow [2024-06-04 14:11:24,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3178, PETRI_PLACES=400, PETRI_TRANSITIONS=299} [2024-06-04 14:11:24,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-04 14:11:24,423 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 299 transitions, 3178 flow [2024-06-04 14:11:24,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:24,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:24,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:24,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:11:24,423 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:24,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1764853309, now seen corresponding path program 9 times [2024-06-04 14:11:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:24,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315409098] [2024-06-04 14:11:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:24,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315409098] [2024-06-04 14:11:25,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315409098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:25,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:25,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683458735] [2024-06-04 14:11:25,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:25,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:25,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:25,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:25,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 299 transitions, 3178 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:25,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:25,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:25,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:26,788 INFO L124 PetriNetUnfolderBase]: 841/1597 cut-off events. [2024-06-04 14:11:26,789 INFO L125 PetriNetUnfolderBase]: For 151178/151178 co-relation queries the response was YES. [2024-06-04 14:11:26,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1597 events. 841/1597 cut-off events. For 151178/151178 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9537 event pairs, 146 based on Foata normal form. 10/1607 useless extension candidates. Maximal degree in co-relation 9394. Up to 1359 conditions per place. [2024-06-04 14:11:26,807 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 47 changer transitions 10/320 dead transitions. [2024-06-04 14:11:26,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 320 transitions, 3948 flow [2024-06-04 14:11:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:11:26,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 14:11:26,809 INFO L175 Difference]: Start difference. First operand has 400 places, 299 transitions, 3178 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:11:26,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 320 transitions, 3948 flow [2024-06-04 14:11:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 320 transitions, 3763 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 14:11:27,581 INFO L231 Difference]: Finished difference. Result has 396 places, 296 transitions, 3071 flow [2024-06-04 14:11:27,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3071, PETRI_PLACES=396, PETRI_TRANSITIONS=296} [2024-06-04 14:11:27,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-04 14:11:27,582 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 296 transitions, 3071 flow [2024-06-04 14:11:27,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:27,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:27,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:27,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:11:27,583 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:27,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:27,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1563495289, now seen corresponding path program 10 times [2024-06-04 14:11:27,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:27,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508923560] [2024-06-04 14:11:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:27,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508923560] [2024-06-04 14:11:29,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508923560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:29,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:29,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094596945] [2024-06-04 14:11:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:29,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:29,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:29,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 296 transitions, 3071 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:29,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:29,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:29,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:29,838 INFO L124 PetriNetUnfolderBase]: 856/1634 cut-off events. [2024-06-04 14:11:29,839 INFO L125 PetriNetUnfolderBase]: For 184537/184537 co-relation queries the response was YES. [2024-06-04 14:11:29,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10584 conditions, 1634 events. 856/1634 cut-off events. For 184537/184537 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9752 event pairs, 147 based on Foata normal form. 8/1642 useless extension candidates. Maximal degree in co-relation 10408. Up to 1165 conditions per place. [2024-06-04 14:11:29,860 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 66 changer transitions 12/321 dead transitions. [2024-06-04 14:11:29,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 321 transitions, 4083 flow [2024-06-04 14:11:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:11:29,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:11:29,861 INFO L175 Difference]: Start difference. First operand has 396 places, 296 transitions, 3071 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:11:29,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 321 transitions, 4083 flow [2024-06-04 14:11:30,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 321 transitions, 3968 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:11:30,781 INFO L231 Difference]: Finished difference. Result has 393 places, 290 transitions, 3041 flow [2024-06-04 14:11:30,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3041, PETRI_PLACES=393, PETRI_TRANSITIONS=290} [2024-06-04 14:11:30,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:11:30,782 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 290 transitions, 3041 flow [2024-06-04 14:11:30,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:30,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:30,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:11:30,782 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:30,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1133013447, now seen corresponding path program 32 times [2024-06-04 14:11:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:30,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391674827] [2024-06-04 14:11:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:32,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:32,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391674827] [2024-06-04 14:11:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391674827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:32,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:32,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:32,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766930932] [2024-06-04 14:11:32,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:32,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:32,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:32,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:32,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 290 transitions, 3041 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:32,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:32,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:32,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:32,703 INFO L124 PetriNetUnfolderBase]: 814/1548 cut-off events. [2024-06-04 14:11:32,704 INFO L125 PetriNetUnfolderBase]: For 154271/154271 co-relation queries the response was YES. [2024-06-04 14:11:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 1548 events. 814/1548 cut-off events. For 154271/154271 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9129 event pairs, 151 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 10082. Up to 1291 conditions per place. [2024-06-04 14:11:32,723 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 63 changer transitions 1/306 dead transitions. [2024-06-04 14:11:32,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 306 transitions, 3769 flow [2024-06-04 14:11:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:11:32,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 14:11:32,725 INFO L175 Difference]: Start difference. First operand has 393 places, 290 transitions, 3041 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:11:32,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 306 transitions, 3769 flow [2024-06-04 14:11:33,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 306 transitions, 3589 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 14:11:33,583 INFO L231 Difference]: Finished difference. Result has 386 places, 291 transitions, 3049 flow [2024-06-04 14:11:33,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3049, PETRI_PLACES=386, PETRI_TRANSITIONS=291} [2024-06-04 14:11:33,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-04 14:11:33,583 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 291 transitions, 3049 flow [2024-06-04 14:11:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:33,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:33,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:33,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:11:33,584 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:33,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1175915737, now seen corresponding path program 33 times [2024-06-04 14:11:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554826767] [2024-06-04 14:11:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554826767] [2024-06-04 14:11:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554826767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:34,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:34,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:34,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987978534] [2024-06-04 14:11:34,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:34,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:34,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:35,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:35,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 291 transitions, 3049 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:35,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:35,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:35,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:35,533 INFO L124 PetriNetUnfolderBase]: 818/1556 cut-off events. [2024-06-04 14:11:35,533 INFO L125 PetriNetUnfolderBase]: For 149940/149940 co-relation queries the response was YES. [2024-06-04 14:11:35,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10252 conditions, 1556 events. 818/1556 cut-off events. For 149940/149940 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9209 event pairs, 149 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 10080. Up to 1299 conditions per place. [2024-06-04 14:11:35,553 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 62 changer transitions 1/307 dead transitions. [2024-06-04 14:11:35,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 307 transitions, 3773 flow [2024-06-04 14:11:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 14:11:35,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 14:11:35,554 INFO L175 Difference]: Start difference. First operand has 386 places, 291 transitions, 3049 flow. Second operand 10 states and 105 transitions. [2024-06-04 14:11:35,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 307 transitions, 3773 flow [2024-06-04 14:11:36,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 307 transitions, 3595 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:36,505 INFO L231 Difference]: Finished difference. Result has 388 places, 292 transitions, 3059 flow [2024-06-04 14:11:36,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3059, PETRI_PLACES=388, PETRI_TRANSITIONS=292} [2024-06-04 14:11:36,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-04 14:11:36,505 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 292 transitions, 3059 flow [2024-06-04 14:11:36,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:36,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:36,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:36,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 14:11:36,506 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:36,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:36,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1570913899, now seen corresponding path program 11 times [2024-06-04 14:11:36,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:36,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696628546] [2024-06-04 14:11:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:36,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:38,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696628546] [2024-06-04 14:11:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696628546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:38,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:38,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:38,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975374576] [2024-06-04 14:11:38,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:38,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:38,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:38,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:38,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:38,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:38,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 292 transitions, 3059 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:38,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:38,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:38,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:39,110 INFO L124 PetriNetUnfolderBase]: 854/1630 cut-off events. [2024-06-04 14:11:39,110 INFO L125 PetriNetUnfolderBase]: For 204024/204024 co-relation queries the response was YES. [2024-06-04 14:11:39,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10313 conditions, 1630 events. 854/1630 cut-off events. For 204024/204024 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9746 event pairs, 173 based on Foata normal form. 16/1646 useless extension candidates. Maximal degree in co-relation 10140. Up to 1380 conditions per place. [2024-06-04 14:11:39,131 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 264 selfloop transitions, 43 changer transitions 17/326 dead transitions. [2024-06-04 14:11:39,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 326 transitions, 3975 flow [2024-06-04 14:11:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:11:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:11:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 14:11:39,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 14:11:39,133 INFO L175 Difference]: Start difference. First operand has 388 places, 292 transitions, 3059 flow. Second operand 12 states and 126 transitions. [2024-06-04 14:11:39,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 326 transitions, 3975 flow [2024-06-04 14:11:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 326 transitions, 3785 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:40,093 INFO L231 Difference]: Finished difference. Result has 397 places, 301 transitions, 3112 flow [2024-06-04 14:11:40,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2885, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3112, PETRI_PLACES=397, PETRI_TRANSITIONS=301} [2024-06-04 14:11:40,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-04 14:11:40,094 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 301 transitions, 3112 flow [2024-06-04 14:11:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:40,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:40,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:40,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 14:11:40,094 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:40,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 908133545, now seen corresponding path program 34 times [2024-06-04 14:11:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871852500] [2024-06-04 14:11:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871852500] [2024-06-04 14:11:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871852500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:41,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:41,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328128077] [2024-06-04 14:11:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:41,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:41,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:41,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:41,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 301 transitions, 3112 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:41,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:41,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:41,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:41,959 INFO L124 PetriNetUnfolderBase]: 816/1552 cut-off events. [2024-06-04 14:11:41,959 INFO L125 PetriNetUnfolderBase]: For 139103/139103 co-relation queries the response was YES. [2024-06-04 14:11:41,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 1552 events. 816/1552 cut-off events. For 139103/139103 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9166 event pairs, 159 based on Foata normal form. 2/1554 useless extension candidates. Maximal degree in co-relation 9937. Up to 1344 conditions per place. [2024-06-04 14:11:41,980 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 54 changer transitions 1/315 dead transitions. [2024-06-04 14:11:41,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 315 transitions, 3858 flow [2024-06-04 14:11:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:41,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 14:11:41,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 14:11:41,981 INFO L175 Difference]: Start difference. First operand has 397 places, 301 transitions, 3112 flow. Second operand 10 states and 103 transitions. [2024-06-04 14:11:41,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 315 transitions, 3858 flow [2024-06-04 14:11:42,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 315 transitions, 3781 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:11:42,879 INFO L231 Difference]: Finished difference. Result has 397 places, 302 transitions, 3204 flow [2024-06-04 14:11:42,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3204, PETRI_PLACES=397, PETRI_TRANSITIONS=302} [2024-06-04 14:11:42,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-04 14:11:42,880 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 302 transitions, 3204 flow [2024-06-04 14:11:42,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:42,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:42,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:42,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 14:11:42,880 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:42,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash 908127965, now seen corresponding path program 35 times [2024-06-04 14:11:42,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:42,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360222591] [2024-06-04 14:11:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:42,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:44,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:44,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360222591] [2024-06-04 14:11:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360222591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:44,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864764735] [2024-06-04 14:11:44,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:44,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:44,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:44,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:44,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 302 transitions, 3204 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:44,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:44,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:44,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:44,701 INFO L124 PetriNetUnfolderBase]: 820/1560 cut-off events. [2024-06-04 14:11:44,701 INFO L125 PetriNetUnfolderBase]: For 141061/141061 co-relation queries the response was YES. [2024-06-04 14:11:44,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10245 conditions, 1560 events. 820/1560 cut-off events. For 141061/141061 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9226 event pairs, 157 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 10069. Up to 1355 conditions per place. [2024-06-04 14:11:44,721 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 262 selfloop transitions, 51 changer transitions 1/316 dead transitions. [2024-06-04 14:11:44,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 316 transitions, 3952 flow [2024-06-04 14:11:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 14:11:44,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-04 14:11:44,722 INFO L175 Difference]: Start difference. First operand has 397 places, 302 transitions, 3204 flow. Second operand 10 states and 102 transitions. [2024-06-04 14:11:44,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 316 transitions, 3952 flow [2024-06-04 14:11:45,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 316 transitions, 3795 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:45,639 INFO L231 Difference]: Finished difference. Result has 399 places, 303 transitions, 3211 flow [2024-06-04 14:11:45,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3211, PETRI_PLACES=399, PETRI_TRANSITIONS=303} [2024-06-04 14:11:45,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-04 14:11:45,639 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 303 transitions, 3211 flow [2024-06-04 14:11:45,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:45,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:45,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:45,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 14:11:45,640 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:45,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash -604151367, now seen corresponding path program 36 times [2024-06-04 14:11:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:45,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355584359] [2024-06-04 14:11:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:45,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:46,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:46,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355584359] [2024-06-04 14:11:46,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355584359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:46,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:46,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:11:46,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688398907] [2024-06-04 14:11:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:46,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:11:46,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:11:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:11:46,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:46,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 303 transitions, 3211 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:46,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:46,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:46,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:47,411 INFO L124 PetriNetUnfolderBase]: 824/1568 cut-off events. [2024-06-04 14:11:47,411 INFO L125 PetriNetUnfolderBase]: For 142899/142899 co-relation queries the response was YES. [2024-06-04 14:11:47,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 1568 events. 824/1568 cut-off events. For 142899/142899 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9308 event pairs, 278 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 10127. Up to 1449 conditions per place. [2024-06-04 14:11:47,429 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 277 selfloop transitions, 39 changer transitions 0/318 dead transitions. [2024-06-04 14:11:47,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 318 transitions, 3979 flow [2024-06-04 14:11:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:11:47,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:11:47,434 INFO L175 Difference]: Start difference. First operand has 399 places, 303 transitions, 3211 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:11:47,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 318 transitions, 3979 flow [2024-06-04 14:11:48,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 318 transitions, 3825 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:48,283 INFO L231 Difference]: Finished difference. Result has 401 places, 304 transitions, 3199 flow [2024-06-04 14:11:48,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3199, PETRI_PLACES=401, PETRI_TRANSITIONS=304} [2024-06-04 14:11:48,284 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-04 14:11:48,284 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 304 transitions, 3199 flow [2024-06-04 14:11:48,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:48,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:48,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:48,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 14:11:48,284 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:48,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash -604143431, now seen corresponding path program 12 times [2024-06-04 14:11:48,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240301010] [2024-06-04 14:11:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:49,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:49,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240301010] [2024-06-04 14:11:49,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240301010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:49,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:49,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:49,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067371768] [2024-06-04 14:11:49,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:49,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:49,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:49,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:49,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:49,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 304 transitions, 3199 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:49,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:49,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:49,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:50,090 INFO L124 PetriNetUnfolderBase]: 840/1604 cut-off events. [2024-06-04 14:11:50,091 INFO L125 PetriNetUnfolderBase]: For 184058/184058 co-relation queries the response was YES. [2024-06-04 14:11:50,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10380 conditions, 1604 events. 840/1604 cut-off events. For 184058/184058 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9566 event pairs, 284 based on Foata normal form. 10/1614 useless extension candidates. Maximal degree in co-relation 10202. Up to 1439 conditions per place. [2024-06-04 14:11:50,110 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 33 changer transitions 16/324 dead transitions. [2024-06-04 14:11:50,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 324 transitions, 3997 flow [2024-06-04 14:11:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:11:50,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:11:50,111 INFO L175 Difference]: Start difference. First operand has 401 places, 304 transitions, 3199 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:11:50,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 324 transitions, 3997 flow [2024-06-04 14:11:50,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 324 transitions, 3865 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:11:50,993 INFO L231 Difference]: Finished difference. Result has 404 places, 298 transitions, 3093 flow [2024-06-04 14:11:50,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3093, PETRI_PLACES=404, PETRI_TRANSITIONS=298} [2024-06-04 14:11:50,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-04 14:11:50,993 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 298 transitions, 3093 flow [2024-06-04 14:11:50,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:50,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:50,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:50,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 14:11:50,994 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:50,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1806097767, now seen corresponding path program 13 times [2024-06-04 14:11:50,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:50,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018287424] [2024-06-04 14:11:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:52,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:52,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018287424] [2024-06-04 14:11:52,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018287424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:52,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:52,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:52,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322366518] [2024-06-04 14:11:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:52,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:52,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:52,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 298 transitions, 3093 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:52,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:52,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:52,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:53,230 INFO L124 PetriNetUnfolderBase]: 822/1574 cut-off events. [2024-06-04 14:11:53,230 INFO L125 PetriNetUnfolderBase]: For 185638/185638 co-relation queries the response was YES. [2024-06-04 14:11:53,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 1574 events. 822/1574 cut-off events. For 185638/185638 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9334 event pairs, 157 based on Foata normal form. 10/1584 useless extension candidates. Maximal degree in co-relation 9964. Up to 996 conditions per place. [2024-06-04 14:11:53,250 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 121 changer transitions 12/318 dead transitions. [2024-06-04 14:11:53,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 318 transitions, 3891 flow [2024-06-04 14:11:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:11:53,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:11:53,252 INFO L175 Difference]: Start difference. First operand has 404 places, 298 transitions, 3093 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:11:53,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 318 transitions, 3891 flow [2024-06-04 14:11:54,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 318 transitions, 3813 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:11:54,366 INFO L231 Difference]: Finished difference. Result has 398 places, 295 transitions, 3240 flow [2024-06-04 14:11:54,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3240, PETRI_PLACES=398, PETRI_TRANSITIONS=295} [2024-06-04 14:11:54,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-04 14:11:54,366 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 295 transitions, 3240 flow [2024-06-04 14:11:54,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:54,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:54,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:54,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 14:11:54,367 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:54,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash 907983815, now seen corresponding path program 37 times [2024-06-04 14:11:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:54,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740781206] [2024-06-04 14:11:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:54,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:55,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740781206] [2024-06-04 14:11:55,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740781206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:55,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:55,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836077362] [2024-06-04 14:11:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:55,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:55,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:55,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:55,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 295 transitions, 3240 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:55,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:55,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:55,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:56,348 INFO L124 PetriNetUnfolderBase]: 802/1534 cut-off events. [2024-06-04 14:11:56,349 INFO L125 PetriNetUnfolderBase]: For 144045/144045 co-relation queries the response was YES. [2024-06-04 14:11:56,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 1534 events. 802/1534 cut-off events. For 144045/144045 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9064 event pairs, 157 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 10001. Up to 1329 conditions per place. [2024-06-04 14:11:56,369 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 256 selfloop transitions, 50 changer transitions 1/309 dead transitions. [2024-06-04 14:11:56,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 309 transitions, 3964 flow [2024-06-04 14:11:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:11:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:11:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-04 14:11:56,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-04 14:11:56,370 INFO L175 Difference]: Start difference. First operand has 398 places, 295 transitions, 3240 flow. Second operand 10 states and 101 transitions. [2024-06-04 14:11:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 309 transitions, 3964 flow [2024-06-04 14:11:57,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 309 transitions, 3718 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:11:57,084 INFO L231 Difference]: Finished difference. Result has 395 places, 296 transitions, 3158 flow [2024-06-04 14:11:57,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3158, PETRI_PLACES=395, PETRI_TRANSITIONS=296} [2024-06-04 14:11:57,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-04 14:11:57,084 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 296 transitions, 3158 flow [2024-06-04 14:11:57,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:57,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:57,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:57,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 14:11:57,085 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:57,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1496049367, now seen corresponding path program 14 times [2024-06-04 14:11:57,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:57,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931716311] [2024-06-04 14:11:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:58,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931716311] [2024-06-04 14:11:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931716311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:58,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:58,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:58,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505334722] [2024-06-04 14:11:58,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:58,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:58,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:58,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:58,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:11:58,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 296 transitions, 3158 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:58,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:58,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:11:58,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:59,063 INFO L124 PetriNetUnfolderBase]: 850/1634 cut-off events. [2024-06-04 14:11:59,063 INFO L125 PetriNetUnfolderBase]: For 223459/223459 co-relation queries the response was YES. [2024-06-04 14:11:59,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11792 conditions, 1634 events. 850/1634 cut-off events. For 223459/223459 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9777 event pairs, 167 based on Foata normal form. 8/1642 useless extension candidates. Maximal degree in co-relation 11617. Up to 992 conditions per place. [2024-06-04 14:11:59,080 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 119 changer transitions 10/321 dead transitions. [2024-06-04 14:11:59,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 321 transitions, 4256 flow [2024-06-04 14:11:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:11:59,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:11:59,082 INFO L175 Difference]: Start difference. First operand has 395 places, 296 transitions, 3158 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:11:59,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 321 transitions, 4256 flow [2024-06-04 14:12:00,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 321 transitions, 4102 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:00,055 INFO L231 Difference]: Finished difference. Result has 399 places, 293 transitions, 3287 flow [2024-06-04 14:12:00,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3287, PETRI_PLACES=399, PETRI_TRANSITIONS=293} [2024-06-04 14:12:00,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-04 14:12:00,056 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 293 transitions, 3287 flow [2024-06-04 14:12:00,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:00,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:00,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:00,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 14:12:00,056 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:00,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:00,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1503677723, now seen corresponding path program 38 times [2024-06-04 14:12:00,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:00,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724192020] [2024-06-04 14:12:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:00,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724192020] [2024-06-04 14:12:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724192020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:01,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:12:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651452241] [2024-06-04 14:12:01,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:12:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:12:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:12:01,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:01,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 293 transitions, 3287 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:01,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:01,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:01,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:01,668 INFO L124 PetriNetUnfolderBase]: 827/1585 cut-off events. [2024-06-04 14:12:01,668 INFO L125 PetriNetUnfolderBase]: For 190991/190991 co-relation queries the response was YES. [2024-06-04 14:12:01,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 1585 events. 827/1585 cut-off events. For 190991/190991 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9349 event pairs, 299 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 11255. Up to 1492 conditions per place. [2024-06-04 14:12:01,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 31 changer transitions 0/306 dead transitions. [2024-06-04 14:12:01,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 306 transitions, 3959 flow [2024-06-04 14:12:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:12:01,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 14:12:01,688 INFO L175 Difference]: Start difference. First operand has 399 places, 293 transitions, 3287 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:12:01,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 306 transitions, 3959 flow [2024-06-04 14:12:02,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 306 transitions, 3709 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:02,608 INFO L231 Difference]: Finished difference. Result has 393 places, 293 transitions, 3103 flow [2024-06-04 14:12:02,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3103, PETRI_PLACES=393, PETRI_TRANSITIONS=293} [2024-06-04 14:12:02,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:12:02,609 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 293 transitions, 3103 flow [2024-06-04 14:12:02,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:02,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:02,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:02,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 14:12:02,609 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:02,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash -288508135, now seen corresponding path program 15 times [2024-06-04 14:12:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857982416] [2024-06-04 14:12:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:04,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:04,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857982416] [2024-06-04 14:12:04,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857982416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:04,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:04,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:04,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940185719] [2024-06-04 14:12:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:04,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:04,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 293 transitions, 3103 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:04,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:04,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:04,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:04,827 INFO L124 PetriNetUnfolderBase]: 843/1621 cut-off events. [2024-06-04 14:12:04,827 INFO L125 PetriNetUnfolderBase]: For 219253/219253 co-relation queries the response was YES. [2024-06-04 14:12:04,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11299 conditions, 1621 events. 843/1621 cut-off events. For 219253/219253 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9637 event pairs, 184 based on Foata normal form. 10/1631 useless extension candidates. Maximal degree in co-relation 11124. Up to 1357 conditions per place. [2024-06-04 14:12:04,850 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 48 changer transitions 19/312 dead transitions. [2024-06-04 14:12:04,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 312 transitions, 3863 flow [2024-06-04 14:12:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:12:04,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 14:12:04,851 INFO L175 Difference]: Start difference. First operand has 393 places, 293 transitions, 3103 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:12:04,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 312 transitions, 3863 flow [2024-06-04 14:12:06,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 312 transitions, 3745 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:06,154 INFO L231 Difference]: Finished difference. Result has 395 places, 285 transitions, 3014 flow [2024-06-04 14:12:06,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3014, PETRI_PLACES=395, PETRI_TRANSITIONS=285} [2024-06-04 14:12:06,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-04 14:12:06,155 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 285 transitions, 3014 flow [2024-06-04 14:12:06,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:06,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:06,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 14:12:06,155 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:06,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1503683303, now seen corresponding path program 39 times [2024-06-04 14:12:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158725158] [2024-06-04 14:12:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:07,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158725158] [2024-06-04 14:12:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158725158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:07,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:07,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:07,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936464762] [2024-06-04 14:12:07,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:07,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:07,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:07,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:07,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 285 transitions, 3014 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:07,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:07,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:07,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:07,840 INFO L124 PetriNetUnfolderBase]: 844/1628 cut-off events. [2024-06-04 14:12:07,841 INFO L125 PetriNetUnfolderBase]: For 245063/245063 co-relation queries the response was YES. [2024-06-04 14:12:07,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12709 conditions, 1628 events. 844/1628 cut-off events. For 245063/245063 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9705 event pairs, 182 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 12533. Up to 1035 conditions per place. [2024-06-04 14:12:07,862 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 118 changer transitions 1/305 dead transitions. [2024-06-04 14:12:07,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 305 transitions, 4064 flow [2024-06-04 14:12:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:12:07,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:12:07,864 INFO L175 Difference]: Start difference. First operand has 395 places, 285 transitions, 3014 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:12:07,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 305 transitions, 4064 flow [2024-06-04 14:12:08,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 305 transitions, 3944 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:08,933 INFO L231 Difference]: Finished difference. Result has 388 places, 287 transitions, 3268 flow [2024-06-04 14:12:08,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3268, PETRI_PLACES=388, PETRI_TRANSITIONS=287} [2024-06-04 14:12:08,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-04 14:12:08,933 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 287 transitions, 3268 flow [2024-06-04 14:12:08,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:08,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:08,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:08,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 14:12:08,934 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:08,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash -87418885, now seen corresponding path program 16 times [2024-06-04 14:12:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:08,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998208884] [2024-06-04 14:12:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:08,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998208884] [2024-06-04 14:12:10,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998208884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:10,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:10,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874826137] [2024-06-04 14:12:10,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:10,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:10,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:10,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 287 transitions, 3268 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:10,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:10,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:10,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:11,321 INFO L124 PetriNetUnfolderBase]: 870/1682 cut-off events. [2024-06-04 14:12:11,321 INFO L125 PetriNetUnfolderBase]: For 276465/276465 co-relation queries the response was YES. [2024-06-04 14:12:11,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13080 conditions, 1682 events. 870/1682 cut-off events. For 276465/276465 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10129 event pairs, 202 based on Foata normal form. 12/1694 useless extension candidates. Maximal degree in co-relation 12907. Up to 1404 conditions per place. [2024-06-04 14:12:11,339 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 55 changer transitions 18/308 dead transitions. [2024-06-04 14:12:11,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 308 transitions, 4092 flow [2024-06-04 14:12:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:12:11,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:12:11,340 INFO L175 Difference]: Start difference. First operand has 388 places, 287 transitions, 3268 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:12:11,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 308 transitions, 4092 flow [2024-06-04 14:12:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 308 transitions, 3840 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-04 14:12:12,401 INFO L231 Difference]: Finished difference. Result has 392 places, 282 transitions, 3098 flow [2024-06-04 14:12:12,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3098, PETRI_PLACES=392, PETRI_TRANSITIONS=282} [2024-06-04 14:12:12,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-04 14:12:12,402 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 282 transitions, 3098 flow [2024-06-04 14:12:12,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:12,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:12,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:12,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 14:12:12,402 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:12,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054391, now seen corresponding path program 17 times [2024-06-04 14:12:12,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:12,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559236405] [2024-06-04 14:12:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:12,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:13,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:13,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559236405] [2024-06-04 14:12:13,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559236405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:13,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:13,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:13,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226982275] [2024-06-04 14:12:13,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:13,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:13,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:13,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:13,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 282 transitions, 3098 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:13,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:13,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:13,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:14,574 INFO L124 PetriNetUnfolderBase]: 852/1652 cut-off events. [2024-06-04 14:12:14,575 INFO L125 PetriNetUnfolderBase]: For 268601/268601 co-relation queries the response was YES. [2024-06-04 14:12:14,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12718 conditions, 1652 events. 852/1652 cut-off events. For 268601/268601 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9921 event pairs, 204 based on Foata normal form. 10/1662 useless extension candidates. Maximal degree in co-relation 12544. Up to 1379 conditions per place. [2024-06-04 14:12:14,598 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 58 changer transitions 12/301 dead transitions. [2024-06-04 14:12:14,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 301 transitions, 3846 flow [2024-06-04 14:12:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:14,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:14,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:12:14,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 14:12:14,599 INFO L175 Difference]: Start difference. First operand has 392 places, 282 transitions, 3098 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:12:14,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 301 transitions, 3846 flow [2024-06-04 14:12:15,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 301 transitions, 3728 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:12:15,764 INFO L231 Difference]: Finished difference. Result has 388 places, 279 transitions, 3079 flow [2024-06-04 14:12:15,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=388, PETRI_TRANSITIONS=279} [2024-06-04 14:12:15,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-04 14:12:15,764 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 279 transitions, 3079 flow [2024-06-04 14:12:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:15,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:15,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 14:12:15,765 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:15,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1115063691, now seen corresponding path program 18 times [2024-06-04 14:12:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499965037] [2024-06-04 14:12:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499965037] [2024-06-04 14:12:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499965037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:17,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315036836] [2024-06-04 14:12:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:17,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:17,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:17,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:17,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:17,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 279 transitions, 3079 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:17,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:17,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:17,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:17,911 INFO L124 PetriNetUnfolderBase]: 876/1704 cut-off events. [2024-06-04 14:12:17,911 INFO L125 PetriNetUnfolderBase]: For 308053/308053 co-relation queries the response was YES. [2024-06-04 14:12:17,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14182 conditions, 1704 events. 876/1704 cut-off events. For 308053/308053 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10312 event pairs, 216 based on Foata normal form. 8/1712 useless extension candidates. Maximal degree in co-relation 14010. Up to 1365 conditions per place. [2024-06-04 14:12:17,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 56 changer transitions 10/303 dead transitions. [2024-06-04 14:12:17,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 303 transitions, 4117 flow [2024-06-04 14:12:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:12:17,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:12:17,935 INFO L175 Difference]: Start difference. First operand has 388 places, 279 transitions, 3079 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:12:17,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 303 transitions, 4117 flow [2024-06-04 14:12:19,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 303 transitions, 3993 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:12:19,243 INFO L231 Difference]: Finished difference. Result has 387 places, 276 transitions, 3111 flow [2024-06-04 14:12:19,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3111, PETRI_PLACES=387, PETRI_TRANSITIONS=276} [2024-06-04 14:12:19,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-04 14:12:19,244 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 276 transitions, 3111 flow [2024-06-04 14:12:19,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:19,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:19,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:19,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 14:12:19,245 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:19,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:19,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1503467977, now seen corresponding path program 19 times [2024-06-04 14:12:19,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:19,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376489910] [2024-06-04 14:12:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:19,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:20,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:20,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376489910] [2024-06-04 14:12:20,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376489910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:20,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:20,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832212895] [2024-06-04 14:12:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:20,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:20,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:20,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 276 transitions, 3111 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:20,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:20,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:20,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:21,342 INFO L124 PetriNetUnfolderBase]: 843/1637 cut-off events. [2024-06-04 14:12:21,342 INFO L125 PetriNetUnfolderBase]: For 266842/266842 co-relation queries the response was YES. [2024-06-04 14:12:21,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12902 conditions, 1637 events. 843/1637 cut-off events. For 266842/266842 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9826 event pairs, 326 based on Foata normal form. 10/1647 useless extension candidates. Maximal degree in co-relation 12730. Up to 1502 conditions per place. [2024-06-04 14:12:21,360 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 256 selfloop transitions, 28 changer transitions 9/295 dead transitions. [2024-06-04 14:12:21,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 295 transitions, 3835 flow [2024-06-04 14:12:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 14:12:21,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:12:21,361 INFO L175 Difference]: Start difference. First operand has 387 places, 276 transitions, 3111 flow. Second operand 11 states and 120 transitions. [2024-06-04 14:12:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 295 transitions, 3835 flow [2024-06-04 14:12:22,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 295 transitions, 3706 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:12:22,337 INFO L231 Difference]: Finished difference. Result has 382 places, 273 transitions, 3026 flow [2024-06-04 14:12:22,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3026, PETRI_PLACES=382, PETRI_TRANSITIONS=273} [2024-06-04 14:12:22,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-04 14:12:22,337 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 273 transitions, 3026 flow [2024-06-04 14:12:22,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:22,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:22,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:22,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 14:12:22,338 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:22,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash -923146869, now seen corresponding path program 20 times [2024-06-04 14:12:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:22,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646683898] [2024-06-04 14:12:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646683898] [2024-06-04 14:12:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646683898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:23,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:12:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201476218] [2024-06-04 14:12:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:23,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:12:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:12:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:12:23,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:23,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 273 transitions, 3026 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:23,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:23,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:23,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:24,155 INFO L124 PetriNetUnfolderBase]: 851/1661 cut-off events. [2024-06-04 14:12:24,156 INFO L125 PetriNetUnfolderBase]: For 282692/282692 co-relation queries the response was YES. [2024-06-04 14:12:24,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13525 conditions, 1661 events. 851/1661 cut-off events. For 282692/282692 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10014 event pairs, 332 based on Foata normal form. 8/1669 useless extension candidates. Maximal degree in co-relation 13355. Up to 1382 conditions per place. [2024-06-04 14:12:24,178 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 264 selfloop transitions, 18 changer transitions 10/294 dead transitions. [2024-06-04 14:12:24,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 294 transitions, 3940 flow [2024-06-04 14:12:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:12:24,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:12:24,180 INFO L175 Difference]: Start difference. First operand has 382 places, 273 transitions, 3026 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:12:24,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 294 transitions, 3940 flow [2024-06-04 14:12:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 294 transitions, 3878 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:12:25,306 INFO L231 Difference]: Finished difference. Result has 380 places, 270 transitions, 2985 flow [2024-06-04 14:12:25,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2985, PETRI_PLACES=380, PETRI_TRANSITIONS=270} [2024-06-04 14:12:25,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-04 14:12:25,306 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 270 transitions, 2985 flow [2024-06-04 14:12:25,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:25,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:25,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 14:12:25,307 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:25,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1247897289, now seen corresponding path program 21 times [2024-06-04 14:12:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077381031] [2024-06-04 14:12:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:26,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077381031] [2024-06-04 14:12:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077381031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:26,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:26,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413367042] [2024-06-04 14:12:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:26,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:26,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:26,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:26,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 270 transitions, 2985 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:26,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:26,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:26,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:27,595 INFO L124 PetriNetUnfolderBase]: 829/1623 cut-off events. [2024-06-04 14:12:27,595 INFO L125 PetriNetUnfolderBase]: For 287748/287748 co-relation queries the response was YES. [2024-06-04 14:12:27,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12205 conditions, 1623 events. 829/1623 cut-off events. For 287748/287748 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9738 event pairs, 330 based on Foata normal form. 22/1645 useless extension candidates. Maximal degree in co-relation 12035. Up to 1465 conditions per place. [2024-06-04 14:12:27,617 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 255 selfloop transitions, 18 changer transitions 13/288 dead transitions. [2024-06-04 14:12:27,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 288 transitions, 3667 flow [2024-06-04 14:12:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:12:27,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:12:27,618 INFO L175 Difference]: Start difference. First operand has 380 places, 270 transitions, 2985 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:12:27,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 288 transitions, 3667 flow [2024-06-04 14:12:28,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 288 transitions, 3595 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:12:28,599 INFO L231 Difference]: Finished difference. Result has 381 places, 263 transitions, 2901 flow [2024-06-04 14:12:28,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2901, PETRI_PLACES=381, PETRI_TRANSITIONS=263} [2024-06-04 14:12:28,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-04 14:12:28,601 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 263 transitions, 2901 flow [2024-06-04 14:12:28,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:28,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:28,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:28,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 14:12:28,601 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:28,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash -934188759, now seen corresponding path program 22 times [2024-06-04 14:12:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799777843] [2024-06-04 14:12:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799777843] [2024-06-04 14:12:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799777843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:29,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:12:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394567711] [2024-06-04 14:12:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:12:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:29,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:12:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:12:29,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:29,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 263 transitions, 2901 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:29,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:29,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:29,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:30,173 INFO L124 PetriNetUnfolderBase]: 795/1569 cut-off events. [2024-06-04 14:12:30,173 INFO L125 PetriNetUnfolderBase]: For 229462/229462 co-relation queries the response was YES. [2024-06-04 14:12:30,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11839 conditions, 1569 events. 795/1569 cut-off events. For 229462/229462 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9446 event pairs, 326 based on Foata normal form. 8/1577 useless extension candidates. Maximal degree in co-relation 11669. Up to 1455 conditions per place. [2024-06-04 14:12:30,194 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 252 selfloop transitions, 15 changer transitions 11/280 dead transitions. [2024-06-04 14:12:30,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 280 transitions, 3553 flow [2024-06-04 14:12:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 14:12:30,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 14:12:30,195 INFO L175 Difference]: Start difference. First operand has 381 places, 263 transitions, 2901 flow. Second operand 10 states and 105 transitions. [2024-06-04 14:12:30,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 280 transitions, 3553 flow [2024-06-04 14:12:31,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 280 transitions, 3499 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:31,139 INFO L231 Difference]: Finished difference. Result has 376 places, 259 transitions, 2850 flow [2024-06-04 14:12:31,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2850, PETRI_PLACES=376, PETRI_TRANSITIONS=259} [2024-06-04 14:12:31,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-04 14:12:31,139 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 259 transitions, 2850 flow [2024-06-04 14:12:31,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:31,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:31,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 14:12:31,140 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:31,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1107435335, now seen corresponding path program 40 times [2024-06-04 14:12:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887574376] [2024-06-04 14:12:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887574376] [2024-06-04 14:12:32,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887574376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:32,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:32,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931839341] [2024-06-04 14:12:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:32,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:32,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:32,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:32,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:32,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 259 transitions, 2850 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:32,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:32,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:32,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:33,021 INFO L124 PetriNetUnfolderBase]: 760/1492 cut-off events. [2024-06-04 14:12:33,021 INFO L125 PetriNetUnfolderBase]: For 198889/198889 co-relation queries the response was YES. [2024-06-04 14:12:33,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11263 conditions, 1492 events. 760/1492 cut-off events. For 198889/198889 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8823 event pairs, 202 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 11093. Up to 1035 conditions per place. [2024-06-04 14:12:33,041 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 91 changer transitions 1/272 dead transitions. [2024-06-04 14:12:33,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 272 transitions, 3466 flow [2024-06-04 14:12:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:12:33,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:12:33,042 INFO L175 Difference]: Start difference. First operand has 376 places, 259 transitions, 2850 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:12:33,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 272 transitions, 3466 flow [2024-06-04 14:12:33,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 272 transitions, 3432 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:12:33,831 INFO L231 Difference]: Finished difference. Result has 373 places, 259 transitions, 3003 flow [2024-06-04 14:12:33,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3003, PETRI_PLACES=373, PETRI_TRANSITIONS=259} [2024-06-04 14:12:33,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-04 14:12:33,831 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 259 transitions, 3003 flow [2024-06-04 14:12:33,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:33,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:33,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:33,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 14:12:33,832 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:33,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1107645081, now seen corresponding path program 23 times [2024-06-04 14:12:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:33,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881905279] [2024-06-04 14:12:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:33,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:35,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:35,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881905279] [2024-06-04 14:12:35,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881905279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:35,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:35,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726781236] [2024-06-04 14:12:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:35,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:35,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 259 transitions, 3003 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:35,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:35,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:35,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:36,603 INFO L124 PetriNetUnfolderBase]: 755/1489 cut-off events. [2024-06-04 14:12:36,603 INFO L125 PetriNetUnfolderBase]: For 212337/212337 co-relation queries the response was YES. [2024-06-04 14:12:36,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10471 conditions, 1489 events. 755/1489 cut-off events. For 212337/212337 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8845 event pairs, 199 based on Foata normal form. 16/1505 useless extension candidates. Maximal degree in co-relation 10302. Up to 966 conditions per place. [2024-06-04 14:12:36,622 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 86 changer transitions 19/279 dead transitions. [2024-06-04 14:12:36,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 279 transitions, 3714 flow [2024-06-04 14:12:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:12:36,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 14:12:36,624 INFO L175 Difference]: Start difference. First operand has 373 places, 259 transitions, 3003 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:12:36,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 279 transitions, 3714 flow [2024-06-04 14:12:37,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 279 transitions, 3478 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:37,648 INFO L231 Difference]: Finished difference. Result has 376 places, 250 transitions, 2869 flow [2024-06-04 14:12:37,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2767, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2869, PETRI_PLACES=376, PETRI_TRANSITIONS=250} [2024-06-04 14:12:37,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-04 14:12:37,649 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 250 transitions, 2869 flow [2024-06-04 14:12:37,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:37,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:37,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:37,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 14:12:37,649 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:37,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:37,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1107429755, now seen corresponding path program 41 times [2024-06-04 14:12:37,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:37,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541401050] [2024-06-04 14:12:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:37,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:38,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:38,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541401050] [2024-06-04 14:12:38,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541401050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:38,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:38,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:38,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824642421] [2024-06-04 14:12:38,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:38,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:38,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:38,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:38,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:39,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 250 transitions, 2869 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:39,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:39,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:39,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:39,550 INFO L124 PetriNetUnfolderBase]: 705/1391 cut-off events. [2024-06-04 14:12:39,550 INFO L125 PetriNetUnfolderBase]: For 153384/153384 co-relation queries the response was YES. [2024-06-04 14:12:39,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9728 conditions, 1391 events. 705/1391 cut-off events. For 153384/153384 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8156 event pairs, 172 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 9558. Up to 1177 conditions per place. [2024-06-04 14:12:39,569 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 210 selfloop transitions, 51 changer transitions 1/264 dead transitions. [2024-06-04 14:12:39,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 264 transitions, 3471 flow [2024-06-04 14:12:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:12:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:12:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 14:12:39,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 14:12:39,571 INFO L175 Difference]: Start difference. First operand has 376 places, 250 transitions, 2869 flow. Second operand 10 states and 103 transitions. [2024-06-04 14:12:39,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 264 transitions, 3471 flow [2024-06-04 14:12:40,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 264 transitions, 3277 flow, removed 11 selfloop flow, removed 14 redundant places. [2024-06-04 14:12:40,410 INFO L231 Difference]: Finished difference. Result has 365 places, 250 transitions, 2789 flow [2024-06-04 14:12:40,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2789, PETRI_PLACES=365, PETRI_TRANSITIONS=250} [2024-06-04 14:12:40,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-04 14:12:40,411 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 250 transitions, 2789 flow [2024-06-04 14:12:40,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:40,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:40,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:40,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 14:12:40,411 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:40,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:40,411 INFO L85 PathProgramCache]: Analyzing trace with hash -354523991, now seen corresponding path program 24 times [2024-06-04 14:12:40,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:40,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229569480] [2024-06-04 14:12:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:40,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:41,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229569480] [2024-06-04 14:12:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229569480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:41,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:41,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561035720] [2024-06-04 14:12:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:41,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:41,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:41,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 250 transitions, 2789 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:41,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:41,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:41,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:42,327 INFO L124 PetriNetUnfolderBase]: 703/1393 cut-off events. [2024-06-04 14:12:42,328 INFO L125 PetriNetUnfolderBase]: For 149056/149056 co-relation queries the response was YES. [2024-06-04 14:12:42,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9125 conditions, 1393 events. 703/1393 cut-off events. For 149056/149056 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8195 event pairs, 291 based on Foata normal form. 8/1401 useless extension candidates. Maximal degree in co-relation 8960. Up to 1313 conditions per place. [2024-06-04 14:12:42,345 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 13 changer transitions 10/267 dead transitions. [2024-06-04 14:12:42,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 267 transitions, 3405 flow [2024-06-04 14:12:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 14:12:42,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-04 14:12:42,346 INFO L175 Difference]: Start difference. First operand has 365 places, 250 transitions, 2789 flow. Second operand 11 states and 108 transitions. [2024-06-04 14:12:42,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 267 transitions, 3405 flow [2024-06-04 14:12:43,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 267 transitions, 3059 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:43,095 INFO L231 Difference]: Finished difference. Result has 364 places, 247 transitions, 2460 flow [2024-06-04 14:12:43,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2460, PETRI_PLACES=364, PETRI_TRANSITIONS=247} [2024-06-04 14:12:43,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 14:12:43,096 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 247 transitions, 2460 flow [2024-06-04 14:12:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:43,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:43,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:43,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 14:12:43,097 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:43,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1326438550, now seen corresponding path program 1 times [2024-06-04 14:12:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:43,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708019066] [2024-06-04 14:12:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:43,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:45,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708019066] [2024-06-04 14:12:45,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708019066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:45,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:45,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448020014] [2024-06-04 14:12:45,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:45,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:45,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:45,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:45,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:45,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 247 transitions, 2460 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:45,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:45,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:45,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:45,918 INFO L124 PetriNetUnfolderBase]: 692/1372 cut-off events. [2024-06-04 14:12:45,919 INFO L125 PetriNetUnfolderBase]: For 142034/142034 co-relation queries the response was YES. [2024-06-04 14:12:45,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 1372 events. 692/1372 cut-off events. For 142034/142034 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8055 event pairs, 153 based on Foata normal form. 6/1378 useless extension candidates. Maximal degree in co-relation 8221. Up to 1175 conditions per place. [2024-06-04 14:12:45,936 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 28 changer transitions 23/267 dead transitions. [2024-06-04 14:12:45,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 267 transitions, 3042 flow [2024-06-04 14:12:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-04 14:12:45,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 14:12:45,937 INFO L175 Difference]: Start difference. First operand has 364 places, 247 transitions, 2460 flow. Second operand 12 states and 123 transitions. [2024-06-04 14:12:45,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 267 transitions, 3042 flow [2024-06-04 14:12:46,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 267 transitions, 3002 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 14:12:46,605 INFO L231 Difference]: Finished difference. Result has 359 places, 237 transitions, 2364 flow [2024-06-04 14:12:46,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2364, PETRI_PLACES=359, PETRI_TRANSITIONS=237} [2024-06-04 14:12:46,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 14:12:46,606 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 237 transitions, 2364 flow [2024-06-04 14:12:46,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:46,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:46,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:46,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 14:12:46,606 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:46,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1437261070, now seen corresponding path program 2 times [2024-06-04 14:12:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:46,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037243598] [2024-06-04 14:12:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:48,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037243598] [2024-06-04 14:12:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037243598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:48,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777270921] [2024-06-04 14:12:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:48,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:48,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 237 transitions, 2364 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:48,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:48,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:48,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:49,097 INFO L124 PetriNetUnfolderBase]: 656/1304 cut-off events. [2024-06-04 14:12:49,097 INFO L125 PetriNetUnfolderBase]: For 128408/128408 co-relation queries the response was YES. [2024-06-04 14:12:49,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7993 conditions, 1304 events. 656/1304 cut-off events. For 128408/128408 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7552 event pairs, 141 based on Foata normal form. 6/1310 useless extension candidates. Maximal degree in co-relation 7834. Up to 1114 conditions per place. [2024-06-04 14:12:49,113 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 32 changer transitions 19/257 dead transitions. [2024-06-04 14:12:49,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 257 transitions, 2934 flow [2024-06-04 14:12:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:49,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-04 14:12:49,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-04 14:12:49,114 INFO L175 Difference]: Start difference. First operand has 359 places, 237 transitions, 2364 flow. Second operand 12 states and 124 transitions. [2024-06-04 14:12:49,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 257 transitions, 2934 flow [2024-06-04 14:12:49,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 257 transitions, 2866 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:49,643 INFO L231 Difference]: Finished difference. Result has 346 places, 229 transitions, 2269 flow [2024-06-04 14:12:49,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2269, PETRI_PLACES=346, PETRI_TRANSITIONS=229} [2024-06-04 14:12:49,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-04 14:12:49,645 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 229 transitions, 2269 flow [2024-06-04 14:12:49,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:49,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:49,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:49,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 14:12:49,645 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:49,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1244597510, now seen corresponding path program 1 times [2024-06-04 14:12:49,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:49,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730247896] [2024-06-04 14:12:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:49,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:51,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:51,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730247896] [2024-06-04 14:12:51,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730247896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:51,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:51,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364406046] [2024-06-04 14:12:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:51,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:51,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:51,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 229 transitions, 2269 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:51,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:51,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:51,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:52,102 INFO L124 PetriNetUnfolderBase]: 634/1266 cut-off events. [2024-06-04 14:12:52,102 INFO L125 PetriNetUnfolderBase]: For 136299/136299 co-relation queries the response was YES. [2024-06-04 14:12:52,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7836 conditions, 1266 events. 634/1266 cut-off events. For 136299/136299 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7313 event pairs, 143 based on Foata normal form. 8/1274 useless extension candidates. Maximal degree in co-relation 7682. Up to 1057 conditions per place. [2024-06-04 14:12:52,117 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 195 selfloop transitions, 43 changer transitions 8/248 dead transitions. [2024-06-04 14:12:52,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 248 transitions, 2861 flow [2024-06-04 14:12:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:12:52,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:12:52,118 INFO L175 Difference]: Start difference. First operand has 346 places, 229 transitions, 2269 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:12:52,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 248 transitions, 2861 flow [2024-06-04 14:12:52,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 248 transitions, 2789 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:52,579 INFO L231 Difference]: Finished difference. Result has 337 places, 225 transitions, 2245 flow [2024-06-04 14:12:52,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2245, PETRI_PLACES=337, PETRI_TRANSITIONS=225} [2024-06-04 14:12:52,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-04 14:12:52,580 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 225 transitions, 2245 flow [2024-06-04 14:12:52,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:52,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:52,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:52,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 14:12:52,580 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:52,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1441902700, now seen corresponding path program 3 times [2024-06-04 14:12:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392391652] [2024-06-04 14:12:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392391652] [2024-06-04 14:12:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392391652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:53,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:53,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:53,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136905307] [2024-06-04 14:12:53,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:53,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:53,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:54,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:54,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 225 transitions, 2245 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:54,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:54,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:54,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:54,580 INFO L124 PetriNetUnfolderBase]: 631/1269 cut-off events. [2024-06-04 14:12:54,581 INFO L125 PetriNetUnfolderBase]: For 151887/151887 co-relation queries the response was YES. [2024-06-04 14:12:54,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7787 conditions, 1269 events. 631/1269 cut-off events. For 151887/151887 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7342 event pairs, 143 based on Foata normal form. 12/1281 useless extension candidates. Maximal degree in co-relation 7636. Up to 1049 conditions per place. [2024-06-04 14:12:54,595 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 36 changer transitions 16/245 dead transitions. [2024-06-04 14:12:54,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 245 transitions, 2807 flow [2024-06-04 14:12:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:12:54,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 14:12:54,596 INFO L175 Difference]: Start difference. First operand has 337 places, 225 transitions, 2245 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:12:54,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 245 transitions, 2807 flow [2024-06-04 14:12:55,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 245 transitions, 2711 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:55,259 INFO L231 Difference]: Finished difference. Result has 336 places, 218 transitions, 2126 flow [2024-06-04 14:12:55,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2126, PETRI_PLACES=336, PETRI_TRANSITIONS=218} [2024-06-04 14:12:55,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 14:12:55,260 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 218 transitions, 2126 flow [2024-06-04 14:12:55,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:55,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:55,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:55,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 14:12:55,261 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:55,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1441729720, now seen corresponding path program 4 times [2024-06-04 14:12:55,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:55,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350678010] [2024-06-04 14:12:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:55,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:56,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:56,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350678010] [2024-06-04 14:12:56,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350678010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:56,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:56,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:56,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242066016] [2024-06-04 14:12:56,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:56,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:56,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:56,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:56,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:56,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 218 transitions, 2126 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:56,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:56,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:56,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:57,302 INFO L124 PetriNetUnfolderBase]: 610/1226 cut-off events. [2024-06-04 14:12:57,303 INFO L125 PetriNetUnfolderBase]: For 129645/129645 co-relation queries the response was YES. [2024-06-04 14:12:57,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 1226 events. 610/1226 cut-off events. For 129645/129645 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7041 event pairs, 149 based on Foata normal form. 6/1232 useless extension candidates. Maximal degree in co-relation 7384. Up to 1051 conditions per place. [2024-06-04 14:12:57,316 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 187 selfloop transitions, 27 changer transitions 24/240 dead transitions. [2024-06-04 14:12:57,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 240 transitions, 2683 flow [2024-06-04 14:12:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-04 14:12:57,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-04 14:12:57,318 INFO L175 Difference]: Start difference. First operand has 336 places, 218 transitions, 2126 flow. Second operand 12 states and 124 transitions. [2024-06-04 14:12:57,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 240 transitions, 2683 flow [2024-06-04 14:12:57,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 240 transitions, 2591 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:57,919 INFO L231 Difference]: Finished difference. Result has 331 places, 207 transitions, 1946 flow [2024-06-04 14:12:57,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1946, PETRI_PLACES=331, PETRI_TRANSITIONS=207} [2024-06-04 14:12:57,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 14:12:57,919 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 207 transitions, 1946 flow [2024-06-04 14:12:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:57,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:57,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:57,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 14:12:57,920 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:57,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:57,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1050245994, now seen corresponding path program 5 times [2024-06-04 14:12:57,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:57,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969501820] [2024-06-04 14:12:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:57,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:59,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969501820] [2024-06-04 14:12:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969501820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:59,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:59,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118750160] [2024-06-04 14:12:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:59,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:59,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:12:59,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 207 transitions, 1946 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:59,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:59,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:12:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:00,477 INFO L124 PetriNetUnfolderBase]: 572/1149 cut-off events. [2024-06-04 14:13:00,477 INFO L125 PetriNetUnfolderBase]: For 128869/128869 co-relation queries the response was YES. [2024-06-04 14:13:00,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7095 conditions, 1149 events. 572/1149 cut-off events. For 128869/128869 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6511 event pairs, 135 based on Foata normal form. 6/1155 useless extension candidates. Maximal degree in co-relation 6946. Up to 1017 conditions per place. [2024-06-04 14:13:00,490 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 23 changer transitions 17/225 dead transitions. [2024-06-04 14:13:00,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 225 transitions, 2440 flow [2024-06-04 14:13:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:13:00,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:13:00,491 INFO L175 Difference]: Start difference. First operand has 331 places, 207 transitions, 1946 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:13:00,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 225 transitions, 2440 flow [2024-06-04 14:13:01,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 225 transitions, 2350 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-04 14:13:01,039 INFO L231 Difference]: Finished difference. Result has 321 places, 199 transitions, 1834 flow [2024-06-04 14:13:01,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1834, PETRI_PLACES=321, PETRI_TRANSITIONS=199} [2024-06-04 14:13:01,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 14:13:01,039 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 199 transitions, 1834 flow [2024-06-04 14:13:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:01,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:01,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 14:13:01,040 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:01,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1922463034, now seen corresponding path program 6 times [2024-06-04 14:13:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:01,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789514152] [2024-06-04 14:13:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789514152] [2024-06-04 14:13:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789514152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:02,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:02,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999583258] [2024-06-04 14:13:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:02,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:02,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 199 transitions, 1834 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:02,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:02,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:02,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:02,948 INFO L124 PetriNetUnfolderBase]: 558/1115 cut-off events. [2024-06-04 14:13:02,948 INFO L125 PetriNetUnfolderBase]: For 128845/128845 co-relation queries the response was YES. [2024-06-04 14:13:02,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 1115 events. 558/1115 cut-off events. For 128845/128845 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6276 event pairs, 130 based on Foata normal form. 6/1121 useless extension candidates. Maximal degree in co-relation 6767. Up to 982 conditions per place. [2024-06-04 14:13:02,961 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 177 selfloop transitions, 26 changer transitions 15/220 dead transitions. [2024-06-04 14:13:02,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 220 transitions, 2348 flow [2024-06-04 14:13:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-04 14:13:02,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 14:13:02,962 INFO L175 Difference]: Start difference. First operand has 321 places, 199 transitions, 1834 flow. Second operand 12 states and 123 transitions. [2024-06-04 14:13:02,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 220 transitions, 2348 flow [2024-06-04 14:13:03,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 220 transitions, 2245 flow, removed 4 selfloop flow, removed 20 redundant places. [2024-06-04 14:13:03,601 INFO L231 Difference]: Finished difference. Result has 308 places, 195 transitions, 1752 flow [2024-06-04 14:13:03,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1752, PETRI_PLACES=308, PETRI_TRANSITIONS=195} [2024-06-04 14:13:03,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 14:13:03,602 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 195 transitions, 1752 flow [2024-06-04 14:13:03,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:03,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:03,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 14:13:03,602 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:03,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -417339118, now seen corresponding path program 7 times [2024-06-04 14:13:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312239613] [2024-06-04 14:13:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:04,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312239613] [2024-06-04 14:13:04,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312239613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:04,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:04,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:04,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478631140] [2024-06-04 14:13:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:04,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:04,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:05,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:05,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 195 transitions, 1752 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:05,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:05,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:05,490 INFO L124 PetriNetUnfolderBase]: 556/1117 cut-off events. [2024-06-04 14:13:05,490 INFO L125 PetriNetUnfolderBase]: For 155279/155279 co-relation queries the response was YES. [2024-06-04 14:13:05,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 1117 events. 556/1117 cut-off events. For 155279/155279 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6288 event pairs, 140 based on Foata normal form. 14/1131 useless extension candidates. Maximal degree in co-relation 6701. Up to 939 conditions per place. [2024-06-04 14:13:05,502 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 168 selfloop transitions, 27 changer transitions 18/215 dead transitions. [2024-06-04 14:13:05,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 215 transitions, 2280 flow [2024-06-04 14:13:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:13:05,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 14:13:05,503 INFO L175 Difference]: Start difference. First operand has 308 places, 195 transitions, 1752 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:13:05,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 215 transitions, 2280 flow [2024-06-04 14:13:06,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 215 transitions, 2215 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:06,047 INFO L231 Difference]: Finished difference. Result has 301 places, 186 transitions, 1644 flow [2024-06-04 14:13:06,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1644, PETRI_PLACES=301, PETRI_TRANSITIONS=186} [2024-06-04 14:13:06,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:13:06,048 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 186 transitions, 1644 flow [2024-06-04 14:13:06,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:06,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:06,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:06,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 14:13:06,048 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:06,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:06,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1188591236, now seen corresponding path program 8 times [2024-06-04 14:13:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:06,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786809874] [2024-06-04 14:13:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:07,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786809874] [2024-06-04 14:13:07,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786809874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:07,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:07,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688079356] [2024-06-04 14:13:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:07,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:07,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:07,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:07,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 186 transitions, 1644 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:07,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:07,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:07,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:08,294 INFO L124 PetriNetUnfolderBase]: 530/1067 cut-off events. [2024-06-04 14:13:08,294 INFO L125 PetriNetUnfolderBase]: For 125446/125446 co-relation queries the response was YES. [2024-06-04 14:13:08,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6558 conditions, 1067 events. 530/1067 cut-off events. For 125446/125446 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5933 event pairs, 130 based on Foata normal form. 6/1073 useless extension candidates. Maximal degree in co-relation 6423. Up to 943 conditions per place. [2024-06-04 14:13:08,304 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 23 changer transitions 15/208 dead transitions. [2024-06-04 14:13:08,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 208 transitions, 2137 flow [2024-06-04 14:13:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:13:08,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:13:08,306 INFO L175 Difference]: Start difference. First operand has 301 places, 186 transitions, 1644 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:13:08,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 208 transitions, 2137 flow [2024-06-04 14:13:08,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 208 transitions, 2067 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:08,891 INFO L231 Difference]: Finished difference. Result has 296 places, 184 transitions, 1596 flow [2024-06-04 14:13:08,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1596, PETRI_PLACES=296, PETRI_TRANSITIONS=184} [2024-06-04 14:13:08,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-04 14:13:08,892 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 184 transitions, 1596 flow [2024-06-04 14:13:08,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:08,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:08,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:08,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 14:13:08,892 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:08,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash -417518608, now seen corresponding path program 9 times [2024-06-04 14:13:08,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576896943] [2024-06-04 14:13:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:08,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576896943] [2024-06-04 14:13:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576896943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604174640] [2024-06-04 14:13:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:10,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:10,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 184 transitions, 1596 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:10,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:10,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:10,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:11,161 INFO L124 PetriNetUnfolderBase]: 516/1041 cut-off events. [2024-06-04 14:13:11,161 INFO L125 PetriNetUnfolderBase]: For 125282/125282 co-relation queries the response was YES. [2024-06-04 14:13:11,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6417 conditions, 1041 events. 516/1041 cut-off events. For 125282/125282 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5754 event pairs, 128 based on Foata normal form. 6/1047 useless extension candidates. Maximal degree in co-relation 6283. Up to 919 conditions per place. [2024-06-04 14:13:11,172 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 23 changer transitions 12/201 dead transitions. [2024-06-04 14:13:11,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 201 transitions, 2048 flow [2024-06-04 14:13:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-04 14:13:11,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-04 14:13:11,173 INFO L175 Difference]: Start difference. First operand has 296 places, 184 transitions, 1596 flow. Second operand 11 states and 113 transitions. [2024-06-04 14:13:11,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 201 transitions, 2048 flow [2024-06-04 14:13:11,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 201 transitions, 1990 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:11,741 INFO L231 Difference]: Finished difference. Result has 292 places, 180 transitions, 1552 flow [2024-06-04 14:13:11,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1552, PETRI_PLACES=292, PETRI_TRANSITIONS=180} [2024-06-04 14:13:11,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-04 14:13:11,741 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 180 transitions, 1552 flow [2024-06-04 14:13:11,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:11,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:11,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:11,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 14:13:11,742 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:11,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash -356187258, now seen corresponding path program 10 times [2024-06-04 14:13:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:11,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798929808] [2024-06-04 14:13:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:13,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:13,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798929808] [2024-06-04 14:13:13,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798929808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:13,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:13,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135883058] [2024-06-04 14:13:13,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:13,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:13,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 180 transitions, 1552 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:13,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:13,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:13,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:13,967 INFO L124 PetriNetUnfolderBase]: 505/1020 cut-off events. [2024-06-04 14:13:13,967 INFO L125 PetriNetUnfolderBase]: For 125266/125266 co-relation queries the response was YES. [2024-06-04 14:13:13,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 1020 events. 505/1020 cut-off events. For 125266/125266 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5598 event pairs, 125 based on Foata normal form. 6/1026 useless extension candidates. Maximal degree in co-relation 6189. Up to 887 conditions per place. [2024-06-04 14:13:13,975 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 23 changer transitions 18/201 dead transitions. [2024-06-04 14:13:13,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 201 transitions, 2020 flow [2024-06-04 14:13:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-04 14:13:13,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-04 14:13:13,976 INFO L175 Difference]: Start difference. First operand has 292 places, 180 transitions, 1552 flow. Second operand 12 states and 122 transitions. [2024-06-04 14:13:13,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 201 transitions, 2020 flow [2024-06-04 14:13:14,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 201 transitions, 1964 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:14,488 INFO L231 Difference]: Finished difference. Result has 287 places, 175 transitions, 1502 flow [2024-06-04 14:13:14,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1502, PETRI_PLACES=287, PETRI_TRANSITIONS=175} [2024-06-04 14:13:14,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-04 14:13:14,488 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 175 transitions, 1502 flow [2024-06-04 14:13:14,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:14,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:14,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:14,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 14:13:14,489 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:14,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash -532809778, now seen corresponding path program 11 times [2024-06-04 14:13:14,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:14,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695952631] [2024-06-04 14:13:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:14,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:16,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695952631] [2024-06-04 14:13:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695952631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:16,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:16,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252051747] [2024-06-04 14:13:16,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:16,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:16,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:16,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 175 transitions, 1502 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:16,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:16,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:16,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:17,010 INFO L124 PetriNetUnfolderBase]: 489/988 cut-off events. [2024-06-04 14:13:17,010 INFO L125 PetriNetUnfolderBase]: For 125091/125091 co-relation queries the response was YES. [2024-06-04 14:13:17,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6182 conditions, 988 events. 489/988 cut-off events. For 125091/125091 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5355 event pairs, 114 based on Foata normal form. 6/994 useless extension candidates. Maximal degree in co-relation 6053. Up to 862 conditions per place. [2024-06-04 14:13:17,019 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 18 changer transitions 18/195 dead transitions. [2024-06-04 14:13:17,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 195 transitions, 1940 flow [2024-06-04 14:13:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:13:17,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:13:17,020 INFO L175 Difference]: Start difference. First operand has 287 places, 175 transitions, 1502 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:13:17,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 195 transitions, 1940 flow [2024-06-04 14:13:17,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 195 transitions, 1886 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:17,637 INFO L231 Difference]: Finished difference. Result has 280 places, 170 transitions, 1442 flow [2024-06-04 14:13:17,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1442, PETRI_PLACES=280, PETRI_TRANSITIONS=170} [2024-06-04 14:13:17,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-04 14:13:17,638 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 170 transitions, 1442 flow [2024-06-04 14:13:17,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:17,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:17,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:17,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 14:13:17,638 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:17,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1192465240, now seen corresponding path program 12 times [2024-06-04 14:13:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147119598] [2024-06-04 14:13:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:19,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:19,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147119598] [2024-06-04 14:13:19,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147119598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:19,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:19,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103508719] [2024-06-04 14:13:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:19,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:19,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:19,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:19,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 170 transitions, 1442 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:19,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:19,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:19,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:20,156 INFO L124 PetriNetUnfolderBase]: 471/954 cut-off events. [2024-06-04 14:13:20,157 INFO L125 PetriNetUnfolderBase]: For 125031/125031 co-relation queries the response was YES. [2024-06-04 14:13:20,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 954 events. 471/954 cut-off events. For 125031/125031 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5114 event pairs, 110 based on Foata normal form. 6/960 useless extension candidates. Maximal degree in co-relation 5904. Up to 825 conditions per place. [2024-06-04 14:13:20,165 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 15 changer transitions 23/190 dead transitions. [2024-06-04 14:13:20,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 190 transitions, 1878 flow [2024-06-04 14:13:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-04 14:13:20,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-04 14:13:20,166 INFO L175 Difference]: Start difference. First operand has 280 places, 170 transitions, 1442 flow. Second operand 12 states and 119 transitions. [2024-06-04 14:13:20,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 190 transitions, 1878 flow [2024-06-04 14:13:20,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 190 transitions, 1832 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:20,787 INFO L231 Difference]: Finished difference. Result has 272 places, 161 transitions, 1329 flow [2024-06-04 14:13:20,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1329, PETRI_PLACES=272, PETRI_TRANSITIONS=161} [2024-06-04 14:13:20,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 14:13:20,788 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 161 transitions, 1329 flow [2024-06-04 14:13:20,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:20,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:20,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 14:13:20,788 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:20,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2039015364, now seen corresponding path program 13 times [2024-06-04 14:13:20,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:20,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428032717] [2024-06-04 14:13:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428032717] [2024-06-04 14:13:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428032717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182952376] [2024-06-04 14:13:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:22,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:22,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 161 transitions, 1329 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:22,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:22,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:22,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:23,090 INFO L124 PetriNetUnfolderBase]: 435/878 cut-off events. [2024-06-04 14:13:23,090 INFO L125 PetriNetUnfolderBase]: For 102981/102981 co-relation queries the response was YES. [2024-06-04 14:13:23,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5212 conditions, 878 events. 435/878 cut-off events. For 102981/102981 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4621 event pairs, 99 based on Foata normal form. 6/884 useless extension candidates. Maximal degree in co-relation 5090. Up to 762 conditions per place. [2024-06-04 14:13:23,099 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 20 changer transitions 12/180 dead transitions. [2024-06-04 14:13:23,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 180 transitions, 1751 flow [2024-06-04 14:13:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-04 14:13:23,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2024-06-04 14:13:23,100 INFO L175 Difference]: Start difference. First operand has 272 places, 161 transitions, 1329 flow. Second operand 12 states and 117 transitions. [2024-06-04 14:13:23,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 180 transitions, 1751 flow [2024-06-04 14:13:23,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 180 transitions, 1698 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:23,425 INFO L231 Difference]: Finished difference. Result has 260 places, 158 transitions, 1293 flow [2024-06-04 14:13:23,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1293, PETRI_PLACES=260, PETRI_TRANSITIONS=158} [2024-06-04 14:13:23,425 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-04 14:13:23,425 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 158 transitions, 1293 flow [2024-06-04 14:13:23,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:23,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:23,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:23,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 14:13:23,426 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:23,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1531669586, now seen corresponding path program 14 times [2024-06-04 14:13:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790671254] [2024-06-04 14:13:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:24,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:24,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790671254] [2024-06-04 14:13:24,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790671254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703766393] [2024-06-04 14:13:24,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:24,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:24,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:25,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:25,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 158 transitions, 1293 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:25,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:25,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:25,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:25,344 INFO L124 PetriNetUnfolderBase]: 425/860 cut-off events. [2024-06-04 14:13:25,345 INFO L125 PetriNetUnfolderBase]: For 102836/102836 co-relation queries the response was YES. [2024-06-04 14:13:25,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 860 events. 425/860 cut-off events. For 102836/102836 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4476 event pairs, 97 based on Foata normal form. 6/866 useless extension candidates. Maximal degree in co-relation 5001. Up to 744 conditions per place. [2024-06-04 14:13:25,351 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 14 changer transitions 25/177 dead transitions. [2024-06-04 14:13:25,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 177 transitions, 1701 flow [2024-06-04 14:13:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 14:13:25,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-04 14:13:25,352 INFO L175 Difference]: Start difference. First operand has 260 places, 158 transitions, 1293 flow. Second operand 12 states and 116 transitions. [2024-06-04 14:13:25,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 177 transitions, 1701 flow [2024-06-04 14:13:25,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 177 transitions, 1643 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:25,654 INFO L231 Difference]: Finished difference. Result has 255 places, 149 transitions, 1187 flow [2024-06-04 14:13:25,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=243, 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=12, PETRI_FLOW=1187, PETRI_PLACES=255, PETRI_TRANSITIONS=149} [2024-06-04 14:13:25,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 14:13:25,655 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 149 transitions, 1187 flow [2024-06-04 14:13:25,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:25,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:25,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:25,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 14:13:25,655 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:25,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1114292710, now seen corresponding path program 15 times [2024-06-04 14:13:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:25,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269188258] [2024-06-04 14:13:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:27,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:27,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269188258] [2024-06-04 14:13:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269188258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:27,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652183222] [2024-06-04 14:13:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:27,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:27,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:27,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 149 transitions, 1187 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:27,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:27,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:27,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:27,648 INFO L124 PetriNetUnfolderBase]: 408/813 cut-off events. [2024-06-04 14:13:27,649 INFO L125 PetriNetUnfolderBase]: For 102626/102626 co-relation queries the response was YES. [2024-06-04 14:13:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 813 events. 408/813 cut-off events. For 102626/102626 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4168 event pairs, 86 based on Foata normal form. 6/819 useless extension candidates. Maximal degree in co-relation 4776. Up to 710 conditions per place. [2024-06-04 14:13:27,655 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 15 changer transitions 18/166 dead transitions. [2024-06-04 14:13:27,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 166 transitions, 1559 flow [2024-06-04 14:13:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-04 14:13:27,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-04 14:13:27,656 INFO L175 Difference]: Start difference. First operand has 255 places, 149 transitions, 1187 flow. Second operand 11 states and 109 transitions. [2024-06-04 14:13:27,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 166 transitions, 1559 flow [2024-06-04 14:13:27,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 166 transitions, 1473 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-04 14:13:27,994 INFO L231 Difference]: Finished difference. Result has 237 places, 144 transitions, 1108 flow [2024-06-04 14:13:27,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1108, PETRI_PLACES=237, PETRI_TRANSITIONS=144} [2024-06-04 14:13:27,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 14:13:27,994 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 144 transitions, 1108 flow [2024-06-04 14:13:27,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:27,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:27,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:27,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 14:13:27,998 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:27,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1467727138, now seen corresponding path program 16 times [2024-06-04 14:13:27,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592378310] [2024-06-04 14:13:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:30,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:30,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592378310] [2024-06-04 14:13:30,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592378310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:30,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:30,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:30,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477111255] [2024-06-04 14:13:30,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:30,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:30,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:30,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:30,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:30,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:30,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 144 transitions, 1108 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:30,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:30,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:30,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:30,653 INFO L124 PetriNetUnfolderBase]: 390/779 cut-off events. [2024-06-04 14:13:30,653 INFO L125 PetriNetUnfolderBase]: For 102398/102398 co-relation queries the response was YES. [2024-06-04 14:13:30,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 779 events. 390/779 cut-off events. For 102398/102398 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3958 event pairs, 80 based on Foata normal form. 6/785 useless extension candidates. Maximal degree in co-relation 4634. Up to 670 conditions per place. [2024-06-04 14:13:30,659 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 18 changer transitions 16/161 dead transitions. [2024-06-04 14:13:30,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 161 transitions, 1478 flow [2024-06-04 14:13:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:30,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 14:13:30,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:13:30,660 INFO L175 Difference]: Start difference. First operand has 237 places, 144 transitions, 1108 flow. Second operand 11 states and 110 transitions. [2024-06-04 14:13:30,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 161 transitions, 1478 flow [2024-06-04 14:13:30,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 161 transitions, 1438 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:30,952 INFO L231 Difference]: Finished difference. Result has 229 places, 139 transitions, 1076 flow [2024-06-04 14:13:30,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1076, PETRI_PLACES=229, PETRI_TRANSITIONS=139} [2024-06-04 14:13:30,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-04 14:13:30,953 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 139 transitions, 1076 flow [2024-06-04 14:13:30,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:30,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:30,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:30,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 14:13:30,953 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:30,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:30,954 INFO L85 PathProgramCache]: Analyzing trace with hash 44319008, now seen corresponding path program 17 times [2024-06-04 14:13:30,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:30,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8841415] [2024-06-04 14:13:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:33,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8841415] [2024-06-04 14:13:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8841415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361795116] [2024-06-04 14:13:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:33,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:33,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:33,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 139 transitions, 1076 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:33,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:33,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:33,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:33,565 INFO L124 PetriNetUnfolderBase]: 374/751 cut-off events. [2024-06-04 14:13:33,565 INFO L125 PetriNetUnfolderBase]: For 93108/93108 co-relation queries the response was YES. [2024-06-04 14:13:33,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 751 events. 374/751 cut-off events. For 93108/93108 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3772 event pairs, 78 based on Foata normal form. 6/757 useless extension candidates. Maximal degree in co-relation 4470. Up to 633 conditions per place. [2024-06-04 14:13:33,571 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 22 changer transitions 12/154 dead transitions. [2024-06-04 14:13:33,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 154 transitions, 1430 flow [2024-06-04 14:13:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 14:13:33,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 14:13:33,572 INFO L175 Difference]: Start difference. First operand has 229 places, 139 transitions, 1076 flow. Second operand 10 states and 104 transitions. [2024-06-04 14:13:33,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 154 transitions, 1430 flow [2024-06-04 14:13:33,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 154 transitions, 1386 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:33,791 INFO L231 Difference]: Finished difference. Result has 222 places, 134 transitions, 1038 flow [2024-06-04 14:13:33,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1038, PETRI_PLACES=222, PETRI_TRANSITIONS=134} [2024-06-04 14:13:33,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 14:13:33,791 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 134 transitions, 1038 flow [2024-06-04 14:13:33,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:33,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:33,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:33,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 14:13:33,792 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:33,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1472368768, now seen corresponding path program 18 times [2024-06-04 14:13:33,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:33,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679485973] [2024-06-04 14:13:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679485973] [2024-06-04 14:13:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679485973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:35,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:35,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658431170] [2024-06-04 14:13:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:35,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:35,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 134 transitions, 1038 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:35,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:35,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:35,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:35,733 INFO L124 PetriNetUnfolderBase]: 360/729 cut-off events. [2024-06-04 14:13:35,733 INFO L125 PetriNetUnfolderBase]: For 85066/85066 co-relation queries the response was YES. [2024-06-04 14:13:35,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 729 events. 360/729 cut-off events. For 85066/85066 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3666 event pairs, 76 based on Foata normal form. 6/735 useless extension candidates. Maximal degree in co-relation 4332. Up to 605 conditions per place. [2024-06-04 14:13:35,738 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 23 changer transitions 14/151 dead transitions. [2024-06-04 14:13:35,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 151 transitions, 1398 flow [2024-06-04 14:13:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:13:35,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 14:13:35,739 INFO L175 Difference]: Start difference. First operand has 222 places, 134 transitions, 1038 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:13:35,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 151 transitions, 1398 flow [2024-06-04 14:13:35,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 151 transitions, 1348 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:35,944 INFO L231 Difference]: Finished difference. Result has 219 places, 130 transitions, 1002 flow [2024-06-04 14:13:35,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1002, PETRI_PLACES=219, PETRI_TRANSITIONS=130} [2024-06-04 14:13:35,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-04 14:13:35,944 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 130 transitions, 1002 flow [2024-06-04 14:13:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:35,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:35,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 14:13:35,945 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:35,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1635386952, now seen corresponding path program 2 times [2024-06-04 14:13:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:35,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813948731] [2024-06-04 14:13:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:35,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:37,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813948731] [2024-06-04 14:13:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813948731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:37,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:37,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195123912] [2024-06-04 14:13:37,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:37,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:37,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 130 transitions, 1002 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:37,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:37,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:37,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:37,672 INFO L124 PetriNetUnfolderBase]: 354/723 cut-off events. [2024-06-04 14:13:37,672 INFO L125 PetriNetUnfolderBase]: For 87031/87031 co-relation queries the response was YES. [2024-06-04 14:13:37,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4401 conditions, 723 events. 354/723 cut-off events. For 87031/87031 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3647 event pairs, 82 based on Foata normal form. 8/731 useless extension candidates. Maximal degree in co-relation 4298. Up to 598 conditions per place. [2024-06-04 14:13:37,677 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 17 changer transitions 20/147 dead transitions. [2024-06-04 14:13:37,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 147 transitions, 1380 flow [2024-06-04 14:13:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:13:37,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 14:13:37,678 INFO L175 Difference]: Start difference. First operand has 219 places, 130 transitions, 1002 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:13:37,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 147 transitions, 1380 flow [2024-06-04 14:13:37,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 147 transitions, 1330 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:37,919 INFO L231 Difference]: Finished difference. Result has 217 places, 120 transitions, 920 flow [2024-06-04 14:13:37,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=920, PETRI_PLACES=217, PETRI_TRANSITIONS=120} [2024-06-04 14:13:37,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-04 14:13:37,920 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 120 transitions, 920 flow [2024-06-04 14:13:37,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:37,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:37,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:37,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 14:13:37,920 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:37,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash -354134, now seen corresponding path program 19 times [2024-06-04 14:13:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:37,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028009670] [2024-06-04 14:13:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:37,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:39,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:39,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028009670] [2024-06-04 14:13:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028009670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:39,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94856] [2024-06-04 14:13:39,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:39,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:39,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:39,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 120 transitions, 920 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:39,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:39,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:39,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:39,779 INFO L124 PetriNetUnfolderBase]: 321/648 cut-off events. [2024-06-04 14:13:39,779 INFO L125 PetriNetUnfolderBase]: For 79879/79879 co-relation queries the response was YES. [2024-06-04 14:13:39,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 648 events. 321/648 cut-off events. For 79879/79879 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3151 event pairs, 72 based on Foata normal form. 6/654 useless extension candidates. Maximal degree in co-relation 3912. Up to 563 conditions per place. [2024-06-04 14:13:39,784 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 11 changer transitions 17/136 dead transitions. [2024-06-04 14:13:39,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 136 transitions, 1228 flow [2024-06-04 14:13:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-04 14:13:39,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-04 14:13:39,785 INFO L175 Difference]: Start difference. First operand has 217 places, 120 transitions, 920 flow. Second operand 11 states and 104 transitions. [2024-06-04 14:13:39,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 136 transitions, 1228 flow [2024-06-04 14:13:39,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 136 transitions, 1135 flow, removed 6 selfloop flow, removed 20 redundant places. [2024-06-04 14:13:39,965 INFO L231 Difference]: Finished difference. Result has 205 places, 115 transitions, 827 flow [2024-06-04 14:13:39,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=827, PETRI_PLACES=205, PETRI_TRANSITIONS=115} [2024-06-04 14:13:39,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-04 14:13:39,966 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 115 transitions, 827 flow [2024-06-04 14:13:39,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:39,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:39,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:39,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 14:13:39,966 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:39,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:39,967 INFO L85 PathProgramCache]: Analyzing trace with hash 110468386, now seen corresponding path program 20 times [2024-06-04 14:13:39,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:39,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058707940] [2024-06-04 14:13:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:39,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:41,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058707940] [2024-06-04 14:13:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058707940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:41,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:41,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:41,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811988457] [2024-06-04 14:13:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:41,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:41,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:41,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 115 transitions, 827 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:41,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:41,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:41,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:42,449 INFO L124 PetriNetUnfolderBase]: 303/614 cut-off events. [2024-06-04 14:13:42,449 INFO L125 PetriNetUnfolderBase]: For 71594/71594 co-relation queries the response was YES. [2024-06-04 14:13:42,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 614 events. 303/614 cut-off events. For 71594/71594 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2938 event pairs, 66 based on Foata normal form. 6/620 useless extension candidates. Maximal degree in co-relation 3661. Up to 526 conditions per place. [2024-06-04 14:13:42,454 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 101 selfloop transitions, 13 changer transitions 15/131 dead transitions. [2024-06-04 14:13:42,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 131 transitions, 1131 flow [2024-06-04 14:13:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-04 14:13:42,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-04 14:13:42,455 INFO L175 Difference]: Start difference. First operand has 205 places, 115 transitions, 827 flow. Second operand 11 states and 104 transitions. [2024-06-04 14:13:42,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 131 transitions, 1131 flow [2024-06-04 14:13:42,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 131 transitions, 1099 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:42,606 INFO L231 Difference]: Finished difference. Result has 197 places, 110 transitions, 793 flow [2024-06-04 14:13:42,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=793, PETRI_PLACES=197, PETRI_TRANSITIONS=110} [2024-06-04 14:13:42,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-04 14:13:42,607 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 110 transitions, 793 flow [2024-06-04 14:13:42,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:42,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:42,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-04 14:13:42,607 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:42,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1123877888, now seen corresponding path program 21 times [2024-06-04 14:13:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128683237] [2024-06-04 14:13:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:44,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:44,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128683237] [2024-06-04 14:13:44,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128683237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:44,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719179514] [2024-06-04 14:13:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:44,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:44,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:44,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:44,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:44,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 110 transitions, 793 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:44,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:44,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:44,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:44,459 INFO L124 PetriNetUnfolderBase]: 287/586 cut-off events. [2024-06-04 14:13:44,459 INFO L125 PetriNetUnfolderBase]: For 63869/63869 co-relation queries the response was YES. [2024-06-04 14:13:44,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 586 events. 287/586 cut-off events. For 63869/63869 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2756 event pairs, 65 based on Foata normal form. 6/592 useless extension candidates. Maximal degree in co-relation 3493. Up to 486 conditions per place. [2024-06-04 14:13:44,463 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 19 changer transitions 12/127 dead transitions. [2024-06-04 14:13:44,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 127 transitions, 1105 flow [2024-06-04 14:13:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-04 14:13:44,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-04 14:13:44,464 INFO L175 Difference]: Start difference. First operand has 197 places, 110 transitions, 793 flow. Second operand 11 states and 107 transitions. [2024-06-04 14:13:44,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 127 transitions, 1105 flow [2024-06-04 14:13:44,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 127 transitions, 1071 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:44,584 INFO L231 Difference]: Finished difference. Result has 191 places, 106 transitions, 776 flow [2024-06-04 14:13:44,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=776, PETRI_PLACES=191, PETRI_TRANSITIONS=106} [2024-06-04 14:13:44,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 14:13:44,600 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 106 transitions, 776 flow [2024-06-04 14:13:44,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:44,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:44,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:44,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-04 14:13:44,601 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:44,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 684815526, now seen corresponding path program 22 times [2024-06-04 14:13:44,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:44,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203530391] [2024-06-04 14:13:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:44,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:46,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:46,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203530391] [2024-06-04 14:13:46,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203530391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:46,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:46,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:46,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105381358] [2024-06-04 14:13:46,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:46,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:46,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:46,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:46,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:47,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:47,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 106 transitions, 776 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:47,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:47,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:47,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:47,450 INFO L124 PetriNetUnfolderBase]: 275/566 cut-off events. [2024-06-04 14:13:47,450 INFO L125 PetriNetUnfolderBase]: For 58379/58379 co-relation queries the response was YES. [2024-06-04 14:13:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 566 events. 275/566 cut-off events. For 58379/58379 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2668 event pairs, 62 based on Foata normal form. 6/572 useless extension candidates. Maximal degree in co-relation 3371. Up to 472 conditions per place. [2024-06-04 14:13:47,454 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 91 selfloop transitions, 16 changer transitions 13/122 dead transitions. [2024-06-04 14:13:47,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 122 transitions, 1064 flow [2024-06-04 14:13:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-04 14:13:47,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-04 14:13:47,455 INFO L175 Difference]: Start difference. First operand has 191 places, 106 transitions, 776 flow. Second operand 11 states and 104 transitions. [2024-06-04 14:13:47,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 122 transitions, 1064 flow [2024-06-04 14:13:47,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 122 transitions, 1018 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:47,570 INFO L231 Difference]: Finished difference. Result has 187 places, 101 transitions, 724 flow [2024-06-04 14:13:47,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=724, PETRI_PLACES=187, PETRI_TRANSITIONS=101} [2024-06-04 14:13:47,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-04 14:13:47,570 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 101 transitions, 724 flow [2024-06-04 14:13:47,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:47,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:47,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:47,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-04 14:13:47,571 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:47,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1119881050, now seen corresponding path program 23 times [2024-06-04 14:13:47,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:47,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886706391] [2024-06-04 14:13:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:49,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:49,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886706391] [2024-06-04 14:13:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886706391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:49,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194504314] [2024-06-04 14:13:49,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:49,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:49,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:49,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:49,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 101 transitions, 724 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:49,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:49,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:49,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:49,543 INFO L124 PetriNetUnfolderBase]: 261/544 cut-off events. [2024-06-04 14:13:49,544 INFO L125 PetriNetUnfolderBase]: For 55478/55478 co-relation queries the response was YES. [2024-06-04 14:13:49,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 544 events. 261/544 cut-off events. For 55478/55478 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2539 event pairs, 61 based on Foata normal form. 6/550 useless extension candidates. Maximal degree in co-relation 3225. Up to 444 conditions per place. [2024-06-04 14:13:49,547 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 16 changer transitions 15/118 dead transitions. [2024-06-04 14:13:49,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 118 transitions, 1012 flow [2024-06-04 14:13:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 14:13:49,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 14:13:49,548 INFO L175 Difference]: Start difference. First operand has 187 places, 101 transitions, 724 flow. Second operand 11 states and 106 transitions. [2024-06-04 14:13:49,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 118 transitions, 1012 flow [2024-06-04 14:13:49,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 118 transitions, 974 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:49,652 INFO L231 Difference]: Finished difference. Result has 183 places, 96 transitions, 687 flow [2024-06-04 14:13:49,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=687, PETRI_PLACES=183, PETRI_TRANSITIONS=96} [2024-06-04 14:13:49,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 14:13:49,653 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 96 transitions, 687 flow [2024-06-04 14:13:49,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:49,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:49,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-04 14:13:49,653 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:49,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1148806794, now seen corresponding path program 24 times [2024-06-04 14:13:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:49,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771615110] [2024-06-04 14:13:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:49,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:51,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:51,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771615110] [2024-06-04 14:13:51,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771615110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:51,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:51,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:51,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751694162] [2024-06-04 14:13:51,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:51,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:51,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:51,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:51,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:51,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 96 transitions, 687 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:51,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:51,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:51,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:52,425 INFO L124 PetriNetUnfolderBase]: 251/530 cut-off events. [2024-06-04 14:13:52,425 INFO L125 PetriNetUnfolderBase]: For 62708/62708 co-relation queries the response was YES. [2024-06-04 14:13:52,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065 conditions, 530 events. 251/530 cut-off events. For 62708/62708 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2486 event pairs, 63 based on Foata normal form. 14/544 useless extension candidates. Maximal degree in co-relation 2979. Up to 390 conditions per place. [2024-06-04 14:13:52,428 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 7 changer transitions 33/114 dead transitions. [2024-06-04 14:13:52,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 114 transitions, 997 flow [2024-06-04 14:13:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-04 14:13:52,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-04 14:13:52,429 INFO L175 Difference]: Start difference. First operand has 183 places, 96 transitions, 687 flow. Second operand 11 states and 109 transitions. [2024-06-04 14:13:52,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 114 transitions, 997 flow [2024-06-04 14:13:52,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 114 transitions, 953 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:52,522 INFO L231 Difference]: Finished difference. Result has 178 places, 78 transitions, 533 flow [2024-06-04 14:13:52,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=178, PETRI_TRANSITIONS=78} [2024-06-04 14:13:52,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-04 14:13:52,522 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 78 transitions, 533 flow [2024-06-04 14:13:52,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:52,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:52,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:52,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-04 14:13:52,523 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:52,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1897764566, now seen corresponding path program 25 times [2024-06-04 14:13:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:52,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063875111] [2024-06-04 14:13:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:52,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:53,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063875111] [2024-06-04 14:13:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063875111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:53,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:13:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585005472] [2024-06-04 14:13:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:53,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:13:53,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:13:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:13:54,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:54,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 78 transitions, 533 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:54,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:54,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:54,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:54,385 INFO L124 PetriNetUnfolderBase]: 204/433 cut-off events. [2024-06-04 14:13:54,385 INFO L125 PetriNetUnfolderBase]: For 44831/44831 co-relation queries the response was YES. [2024-06-04 14:13:54,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 433 events. 204/433 cut-off events. For 44831/44831 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1869 event pairs, 55 based on Foata normal form. 6/439 useless extension candidates. Maximal degree in co-relation 2517. Up to 350 conditions per place. [2024-06-04 14:13:54,388 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 9 changer transitions 18/94 dead transitions. [2024-06-04 14:13:54,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 94 transitions, 763 flow [2024-06-04 14:13:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-04 14:13:54,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2897727272727273 [2024-06-04 14:13:54,389 INFO L175 Difference]: Start difference. First operand has 178 places, 78 transitions, 533 flow. Second operand 11 states and 102 transitions. [2024-06-04 14:13:54,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 94 transitions, 763 flow [2024-06-04 14:13:54,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 94 transitions, 686 flow, removed 18 selfloop flow, removed 20 redundant places. [2024-06-04 14:13:54,451 INFO L231 Difference]: Finished difference. Result has 152 places, 72 transitions, 452 flow [2024-06-04 14:13:54,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=452, PETRI_PLACES=152, PETRI_TRANSITIONS=72} [2024-06-04 14:13:54,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-04 14:13:54,452 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 72 transitions, 452 flow [2024-06-04 14:13:54,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:54,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:54,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:54,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-04 14:13:54,452 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:54,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 991581274, now seen corresponding path program 26 times [2024-06-04 14:13:54,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:54,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125368704] [2024-06-04 14:13:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:54,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125368704] [2024-06-04 14:13:56,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125368704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:56,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:56,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934253531] [2024-06-04 14:13:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:56,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:56,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 72 transitions, 452 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:56,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:56,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:56,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:56,797 INFO L124 PetriNetUnfolderBase]: 186/399 cut-off events. [2024-06-04 14:13:56,798 INFO L125 PetriNetUnfolderBase]: For 30853/30853 co-relation queries the response was YES. [2024-06-04 14:13:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 399 events. 186/399 cut-off events. For 30853/30853 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1693 event pairs, 61 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 2146. Up to 306 conditions per place. [2024-06-04 14:13:56,800 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 14 changer transitions 12/84 dead transitions. [2024-06-04 14:13:56,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 84 transitions, 650 flow [2024-06-04 14:13:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-04 14:13:56,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-04 14:13:56,800 INFO L175 Difference]: Start difference. First operand has 152 places, 72 transitions, 452 flow. Second operand 10 states and 98 transitions. [2024-06-04 14:13:56,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 84 transitions, 650 flow [2024-06-04 14:13:56,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 84 transitions, 620 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:13:56,844 INFO L231 Difference]: Finished difference. Result has 143 places, 66 transitions, 424 flow [2024-06-04 14:13:56,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=143, PETRI_TRANSITIONS=66} [2024-06-04 14:13:56,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-04 14:13:56,845 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 66 transitions, 424 flow [2024-06-04 14:13:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:56,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:56,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:56,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-04 14:13:56,845 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:56,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1318969436, now seen corresponding path program 3 times [2024-06-04 14:13:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:56,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126478237] [2024-06-04 14:13:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:58,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:58,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126478237] [2024-06-04 14:13:58,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126478237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:58,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:58,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:13:58,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469147] [2024-06-04 14:13:58,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:58,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:13:58,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:13:58,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:13:58,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:13:58,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 66 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:58,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:58,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:13:58,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:59,045 INFO L124 PetriNetUnfolderBase]: 156/337 cut-off events. [2024-06-04 14:13:59,045 INFO L125 PetriNetUnfolderBase]: For 20080/20080 co-relation queries the response was YES. [2024-06-04 14:13:59,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1597 conditions, 337 events. 156/337 cut-off events. For 20080/20080 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1344 event pairs, 47 based on Foata normal form. 8/345 useless extension candidates. Maximal degree in co-relation 1530. Up to 250 conditions per place. [2024-06-04 14:13:59,047 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 54 selfloop transitions, 15 changer transitions 6/77 dead transitions. [2024-06-04 14:13:59,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 77 transitions, 604 flow [2024-06-04 14:13:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:13:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:13:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-04 14:13:59,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-04 14:13:59,048 INFO L175 Difference]: Start difference. First operand has 143 places, 66 transitions, 424 flow. Second operand 10 states and 96 transitions. [2024-06-04 14:13:59,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 77 transitions, 604 flow [2024-06-04 14:13:59,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 77 transitions, 554 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:59,069 INFO L231 Difference]: Finished difference. Result has 135 places, 62 transitions, 385 flow [2024-06-04 14:13:59,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=135, PETRI_TRANSITIONS=62} [2024-06-04 14:13:59,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-04 14:13:59,069 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 62 transitions, 385 flow [2024-06-04 14:13:59,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:59,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:59,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:59,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-04 14:13:59,070 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:59,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash 763507144, now seen corresponding path program 27 times [2024-06-04 14:13:59,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:59,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068706854] [2024-06-04 14:13:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:59,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:00,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068706854] [2024-06-04 14:14:00,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068706854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:00,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:00,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:00,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003999349] [2024-06-04 14:14:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:00,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:00,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:00,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:00,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:00,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 62 transitions, 385 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:00,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:00,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:00,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:00,867 INFO L124 PetriNetUnfolderBase]: 147/322 cut-off events. [2024-06-04 14:14:00,867 INFO L125 PetriNetUnfolderBase]: For 15063/15063 co-relation queries the response was YES. [2024-06-04 14:14:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 322 events. 147/322 cut-off events. For 15063/15063 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1265 event pairs, 41 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1400. Up to 241 conditions per place. [2024-06-04 14:14:00,869 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 12 changer transitions 11/76 dead transitions. [2024-06-04 14:14:00,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 76 transitions, 567 flow [2024-06-04 14:14:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-04 14:14:00,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2869318181818182 [2024-06-04 14:14:00,870 INFO L175 Difference]: Start difference. First operand has 135 places, 62 transitions, 385 flow. Second operand 11 states and 101 transitions. [2024-06-04 14:14:00,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 76 transitions, 567 flow [2024-06-04 14:14:00,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 76 transitions, 518 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:00,887 INFO L231 Difference]: Finished difference. Result has 132 places, 59 transitions, 351 flow [2024-06-04 14:14:00,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=351, PETRI_PLACES=132, PETRI_TRANSITIONS=59} [2024-06-04 14:14:00,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-04 14:14:00,887 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 59 transitions, 351 flow [2024-06-04 14:14:00,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:00,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:00,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:00,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-04 14:14:00,888 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:00,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1460191104, now seen corresponding path program 28 times [2024-06-04 14:14:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447022393] [2024-06-04 14:14:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447022393] [2024-06-04 14:14:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447022393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106297298] [2024-06-04 14:14:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:02,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:02,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 59 transitions, 351 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:02,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:02,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:02,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:02,652 INFO L124 PetriNetUnfolderBase]: 137/304 cut-off events. [2024-06-04 14:14:02,653 INFO L125 PetriNetUnfolderBase]: For 14387/14387 co-relation queries the response was YES. [2024-06-04 14:14:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 304 events. 137/304 cut-off events. For 14387/14387 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1164 event pairs, 47 based on Foata normal form. 6/310 useless extension candidates. Maximal degree in co-relation 1296. Up to 228 conditions per place. [2024-06-04 14:14:02,654 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 3 changer transitions 23/70 dead transitions. [2024-06-04 14:14:02,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 70 transitions, 513 flow [2024-06-04 14:14:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:14:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:14:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 92 transitions. [2024-06-04 14:14:02,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2875 [2024-06-04 14:14:02,655 INFO L175 Difference]: Start difference. First operand has 132 places, 59 transitions, 351 flow. Second operand 10 states and 92 transitions. [2024-06-04 14:14:02,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 70 transitions, 513 flow [2024-06-04 14:14:02,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 70 transitions, 483 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:02,670 INFO L231 Difference]: Finished difference. Result has 127 places, 46 transitions, 263 flow [2024-06-04 14:14:02,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=263, PETRI_PLACES=127, PETRI_TRANSITIONS=46} [2024-06-04 14:14:02,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-04 14:14:02,671 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 46 transitions, 263 flow [2024-06-04 14:14:02,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:02,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:02,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:02,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-04 14:14:02,671 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:02,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash -29414328, now seen corresponding path program 29 times [2024-06-04 14:14:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182610730] [2024-06-04 14:14:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:04,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:04,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182610730] [2024-06-04 14:14:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182610730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:04,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:04,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:04,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989310160] [2024-06-04 14:14:04,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:04,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:05,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:05,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 46 transitions, 263 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:05,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:05,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:05,271 INFO L124 PetriNetUnfolderBase]: 118/260 cut-off events. [2024-06-04 14:14:05,272 INFO L125 PetriNetUnfolderBase]: For 12931/12931 co-relation queries the response was YES. [2024-06-04 14:14:05,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 260 events. 118/260 cut-off events. For 12931/12931 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 941 event pairs, 37 based on Foata normal form. 6/266 useless extension candidates. Maximal degree in co-relation 1122. Up to 181 conditions per place. [2024-06-04 14:14:05,273 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 37 selfloop transitions, 8 changer transitions 15/62 dead transitions. [2024-06-04 14:14:05,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 62 transitions, 423 flow [2024-06-04 14:14:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-04 14:14:05,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29261363636363635 [2024-06-04 14:14:05,274 INFO L175 Difference]: Start difference. First operand has 127 places, 46 transitions, 263 flow. Second operand 11 states and 103 transitions. [2024-06-04 14:14:05,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 62 transitions, 423 flow [2024-06-04 14:14:05,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 62 transitions, 383 flow, removed 15 selfloop flow, removed 17 redundant places. [2024-06-04 14:14:05,283 INFO L231 Difference]: Finished difference. Result has 104 places, 41 transitions, 225 flow [2024-06-04 14:14:05,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=225, PETRI_PLACES=104, PETRI_TRANSITIONS=41} [2024-06-04 14:14:05,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-04 14:14:05,283 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 41 transitions, 225 flow [2024-06-04 14:14:05,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:05,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:05,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:05,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-04 14:14:05,284 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:05,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1912802522, now seen corresponding path program 30 times [2024-06-04 14:14:05,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:05,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556762847] [2024-06-04 14:14:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:05,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:07,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:07,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556762847] [2024-06-04 14:14:07,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556762847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:07,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:07,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980419785] [2024-06-04 14:14:07,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:07,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:07,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:07,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 41 transitions, 225 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:07,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:07,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:07,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:07,422 INFO L124 PetriNetUnfolderBase]: 105/233 cut-off events. [2024-06-04 14:14:07,422 INFO L125 PetriNetUnfolderBase]: For 7014/7014 co-relation queries the response was YES. [2024-06-04 14:14:07,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 233 events. 105/233 cut-off events. For 7014/7014 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 808 event pairs, 35 based on Foata normal form. 6/239 useless extension candidates. Maximal degree in co-relation 928. Up to 163 conditions per place. [2024-06-04 14:14:07,424 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 33 selfloop transitions, 7 changer transitions 14/56 dead transitions. [2024-06-04 14:14:07,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 56 transitions, 365 flow [2024-06-04 14:14:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-04 14:14:07,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-04 14:14:07,425 INFO L175 Difference]: Start difference. First operand has 104 places, 41 transitions, 225 flow. Second operand 11 states and 100 transitions. [2024-06-04 14:14:07,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 56 transitions, 365 flow [2024-06-04 14:14:07,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 56 transitions, 339 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:07,431 INFO L231 Difference]: Finished difference. Result has 96 places, 37 transitions, 198 flow [2024-06-04 14:14:07,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=198, PETRI_PLACES=96, PETRI_TRANSITIONS=37} [2024-06-04 14:14:07,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 14:14:07,431 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 37 transitions, 198 flow [2024-06-04 14:14:07,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:07,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:07,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:07,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-04 14:14:07,432 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:07,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1917271172, now seen corresponding path program 31 times [2024-06-04 14:14:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917528255] [2024-06-04 14:14:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:08,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:08,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917528255] [2024-06-04 14:14:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917528255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:14:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387044280] [2024-06-04 14:14:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:08,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:14:08,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:14:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:14:09,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:09,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 37 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:09,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:09,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:09,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:09,295 INFO L124 PetriNetUnfolderBase]: 91/207 cut-off events. [2024-06-04 14:14:09,295 INFO L125 PetriNetUnfolderBase]: For 5142/5142 co-relation queries the response was YES. [2024-06-04 14:14:09,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 207 events. 91/207 cut-off events. For 5142/5142 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 684 event pairs, 31 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 808. Up to 137 conditions per place. [2024-06-04 14:14:09,296 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 27 selfloop transitions, 4 changer transitions 19/52 dead transitions. [2024-06-04 14:14:09,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 52 transitions, 330 flow [2024-06-04 14:14:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-04 14:14:09,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2784090909090909 [2024-06-04 14:14:09,297 INFO L175 Difference]: Start difference. First operand has 96 places, 37 transitions, 198 flow. Second operand 11 states and 98 transitions. [2024-06-04 14:14:09,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 52 transitions, 330 flow [2024-06-04 14:14:09,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 52 transitions, 308 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:09,301 INFO L231 Difference]: Finished difference. Result has 90 places, 31 transitions, 159 flow [2024-06-04 14:14:09,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=159, PETRI_PLACES=90, PETRI_TRANSITIONS=31} [2024-06-04 14:14:09,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-04 14:14:09,302 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 31 transitions, 159 flow [2024-06-04 14:14:09,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:09,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:09,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:09,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-04 14:14:09,302 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:09,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash 630632478, now seen corresponding path program 32 times [2024-06-04 14:14:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:09,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569007249] [2024-06-04 14:14:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:09,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:10,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569007249] [2024-06-04 14:14:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569007249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:14:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652165231] [2024-06-04 14:14:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:14:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:14:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:14:10,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:10,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 31 transitions, 159 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:10,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:10,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:10,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:10,637 INFO L124 PetriNetUnfolderBase]: 74/172 cut-off events. [2024-06-04 14:14:10,637 INFO L125 PetriNetUnfolderBase]: For 3926/3926 co-relation queries the response was YES. [2024-06-04 14:14:10,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 172 events. 74/172 cut-off events. For 3926/3926 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 531 event pairs, 29 based on Foata normal form. 6/178 useless extension candidates. Maximal degree in co-relation 674. Up to 95 conditions per place. [2024-06-04 14:14:10,638 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 21 selfloop transitions, 10 changer transitions 11/44 dead transitions. [2024-06-04 14:14:10,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 44 transitions, 271 flow [2024-06-04 14:14:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-04 14:14:10,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26704545454545453 [2024-06-04 14:14:10,640 INFO L175 Difference]: Start difference. First operand has 90 places, 31 transitions, 159 flow. Second operand 11 states and 94 transitions. [2024-06-04 14:14:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 44 transitions, 271 flow [2024-06-04 14:14:10,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 44 transitions, 251 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:10,642 INFO L231 Difference]: Finished difference. Result has 80 places, 28 transitions, 148 flow [2024-06-04 14:14:10,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=148, PETRI_PLACES=80, PETRI_TRANSITIONS=28} [2024-06-04 14:14:10,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-04 14:14:10,643 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 28 transitions, 148 flow [2024-06-04 14:14:10,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:10,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:10,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:10,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-04 14:14:10,643 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:10,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1502753300, now seen corresponding path program 33 times [2024-06-04 14:14:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:10,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180923394] [2024-06-04 14:14:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180923394] [2024-06-04 14:14:11,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180923394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:11,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:11,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:11,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765130692] [2024-06-04 14:14:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:11,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:11,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:11,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 28 transitions, 148 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:11,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:11,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:11,853 INFO L124 PetriNetUnfolderBase]: 49/121 cut-off events. [2024-06-04 14:14:11,854 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2024-06-04 14:14:11,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 121 events. 49/121 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 295 event pairs, 5 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 410. Up to 38 conditions per place. [2024-06-04 14:14:11,854 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 20 selfloop transitions, 8 changer transitions 11/41 dead transitions. [2024-06-04 14:14:11,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 41 transitions, 254 flow [2024-06-04 14:14:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-06-04 14:14:11,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26136363636363635 [2024-06-04 14:14:11,855 INFO L175 Difference]: Start difference. First operand has 80 places, 28 transitions, 148 flow. Second operand 11 states and 92 transitions. [2024-06-04 14:14:11,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 41 transitions, 254 flow [2024-06-04 14:14:11,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 41 transitions, 228 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:14:11,857 INFO L231 Difference]: Finished difference. Result has 76 places, 23 transitions, 117 flow [2024-06-04 14:14:11,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=11, PETRI_FLOW=117, PETRI_PLACES=76, PETRI_TRANSITIONS=23} [2024-06-04 14:14:11,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-04 14:14:11,857 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 23 transitions, 117 flow [2024-06-04 14:14:11,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:11,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:11,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:11,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-04 14:14:11,858 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash -38398246, now seen corresponding path program 34 times [2024-06-04 14:14:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906296298] [2024-06-04 14:14:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:13,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:13,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906296298] [2024-06-04 14:14:13,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906296298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:13,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:14:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898572682] [2024-06-04 14:14:13,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:13,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:14:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:14:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:14:13,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 14:14:13,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 23 transitions, 117 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:13,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:13,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 14:14:13,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:13,712 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-06-04 14:14:13,712 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2024-06-04 14:14:13,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 61 events. 21/61 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 1 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 168. Up to 24 conditions per place. [2024-06-04 14:14:13,712 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-04 14:14:13,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 30 transitions, 159 flow [2024-06-04 14:14:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-06-04 14:14:13,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23863636363636365 [2024-06-04 14:14:13,713 INFO L175 Difference]: Start difference. First operand has 76 places, 23 transitions, 117 flow. Second operand 11 states and 84 transitions. [2024-06-04 14:14:13,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 30 transitions, 159 flow [2024-06-04 14:14:13,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 30 transitions, 123 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-04 14:14:13,713 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-04 14:14:13,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-04 14:14:13,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-04 14:14:13,714 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-04 14:14:13,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:13,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 14:14:13,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 14:14:13,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 14:14:13,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 14:14:13,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-04 14:14:13,732 INFO L445 BasicCegarLoop]: Path program histogram: [41, 34, 28, 24, 17, 14, 11, 8, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:13,734 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:14:13,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:14:13,737 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 14:14:13,737 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 14:14:13,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:14:13 BasicIcfg [2024-06-04 14:14:13,738 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:14:13,738 INFO L158 Benchmark]: Toolchain (without parser) took 501984.81ms. Allocated memory was 115.3MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 48.7MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 95.3MB. Max. memory is 16.1GB. [2024-06-04 14:14:13,739 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:14:13,739 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory was 70.0MB in the beginning and 69.9MB in the end (delta: 75.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:14:13,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.98ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 48.7MB in the beginning and 98.1MB in the end (delta: -49.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2024-06-04 14:14:13,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.96ms. Allocated memory is still 157.3MB. Free memory was 98.1MB in the beginning and 94.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:14:13,739 INFO L158 Benchmark]: Boogie Preprocessor took 78.03ms. Allocated memory is still 157.3MB. Free memory was 94.4MB in the beginning and 90.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:14:13,739 INFO L158 Benchmark]: RCFGBuilder took 686.46ms. Allocated memory is still 157.3MB. Free memory was 90.2MB in the beginning and 80.5MB in the end (delta: 9.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2024-06-04 14:14:13,740 INFO L158 Benchmark]: TraceAbstraction took 500399.73ms. Allocated memory was 157.3MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 79.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2024-06-04 14:14:13,752 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory was 70.0MB in the beginning and 69.9MB in the end (delta: 75.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 718.98ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 48.7MB in the beginning and 98.1MB in the end (delta: -49.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.96ms. Allocated memory is still 157.3MB. Free memory was 98.1MB in the beginning and 94.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.03ms. Allocated memory is still 157.3MB. Free memory was 94.4MB in the beginning and 90.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 686.46ms. Allocated memory is still 157.3MB. Free memory was 90.2MB in the beginning and 80.5MB in the end (delta: 9.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * TraceAbstraction took 500399.73ms. Allocated memory was 157.3MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 79.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: 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, 51 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: 500.3s, OverallIterations: 234, TraceHistogramMax: 1, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.0s, AutomataDifference: 222.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12200 SdHoareTripleChecker+Valid, 58.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10654 mSDsluCounter, 7772 SdHoareTripleChecker+Invalid, 51.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6333 mSDsCounter, 2814 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94707 IncrementalHoareTripleChecker+Invalid, 97521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2814 mSolverCounterUnsat, 1439 mSDtfsCounter, 94707 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2701 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2685 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5567 ImplicationChecksByTransitivity, 71.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4192occurred in iteration=140, InterpolantAutomatonStates: 2294, 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: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 273.7s InterpolantComputationTime, 4184 NumberOfCodeBlocks, 4184 NumberOfCodeBlocksAsserted, 234 NumberOfCheckSat, 3950 ConstructedInterpolants, 0 QuantifiedInterpolants, 178141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 234 InterpolantComputations, 234 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! [2024-06-04 14:14:13,855 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