./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/goblint-regression/36-apron_21-traces-cluster-based_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.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 --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:45:50,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:45:50,481 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:45:50,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:45:50,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:45:50,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:45:50,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:45:50,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:45:50,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:45:50,531 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:45:50,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:45:50,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:45:50,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:45:50,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:45:50,534 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:45:50,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:45:50,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:45:50,535 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:45:50,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:45:50,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:45:50,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:45:50,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:45:50,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:45:50,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:45:50,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:45:50,536 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:45:50,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:45:50,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:45:50,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:45:50,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:45:50,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:45:50,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:45:50,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:50,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:45:50,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:45:50,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:45:50,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:45:50,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:45:50,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:45:50,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:45:50,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:45:50,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:45:50,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:45:50,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:45:50,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:45:50,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:45:50,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:45:50,772 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:45:50,772 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:45:50,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-01-31 16:45:51,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:45:52,037 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:45:52,038 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-01-31 16:45:52,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2783bd427/eb652b01b01f4a988b70778049a5f162/FLAG51c2b9e68 [2024-01-31 16:45:52,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2783bd427/eb652b01b01f4a988b70778049a5f162 [2024-01-31 16:45:52,060 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:45:52,061 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:45:52,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-01-31 16:45:52,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:45:52,155 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:45:52,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:52,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:45:52,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:45:52,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:52" (1/2) ... [2024-01-31 16:45:52,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48400e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:52, skipping insertion in model container [2024-01-31 16:45:52,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:52" (1/2) ... [2024-01-31 16:45:52,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cb3e51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:52, skipping insertion in model container [2024-01-31 16:45:52,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:52" (2/2) ... [2024-01-31 16:45:52,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48400e03 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52, skipping insertion in model container [2024-01-31 16:45:52,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:52" (2/2) ... [2024-01-31 16:45:52,163 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:45:52,247 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:45:52,248 INFO L98 nessWitnessExtractor]: Location invariant after [L713-L713] (unsigned long )arg == 0UL [2024-01-31 16:45:52,248 INFO L98 nessWitnessExtractor]: Location invariant after [L724-L724] ((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && (g == 42)) && (h == 42) [2024-01-31 16:45:52,248 INFO L98 nessWitnessExtractor]: Location invariant after [L725-L725] (g == 42) && (h == 42) [2024-01-31 16:45:52,248 INFO L98 nessWitnessExtractor]: Location invariant after [L703-L703] (unsigned long )arg == 0UL [2024-01-31 16:45:52,248 INFO L98 nessWitnessExtractor]: Location invariant after [L712-L712] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:52,249 INFO L98 nessWitnessExtractor]: Location invariant after [L687-L687] (unsigned long )arg == 0UL [2024-01-31 16:45:52,249 INFO L98 nessWitnessExtractor]: Location invariant after [L702-L702] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:52,279 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:45:52,384 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-01-31 16:45:52,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:52,520 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:45:52,530 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-01-31 16:45:52,575 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:52,577 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:52,577 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:52,578 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:52,578 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:52,579 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:52,579 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:52,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:52,608 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:45:52,608 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52 WrapperNode [2024-01-31 16:45:52,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:52,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:52,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:45:52,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:45:52,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,656 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2024-01-31 16:45:52,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:52,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:45:52,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:45:52,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:45:52,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,697 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 5, 5, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 0, 1, 1, 1]. [2024-01-31 16:45:52,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:45:52,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:45:52,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:45:52,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:45:52,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (1/1) ... [2024-01-31 16:45:52,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:52,759 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) [2024-01-31 16:45:52,792 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 [2024-01-31 16:45:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-01-31 16:45:52,815 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-01-31 16:45:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:45:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:45:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:45:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:45:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:45:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:45:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:45:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:45:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:45:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-01-31 16:45:52,816 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-01-31 16:45:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-31 16:45:52,816 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:45:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:45:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:45:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:45:52,819 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:45:52,982 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:45:52,984 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:45:53,172 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:45:53,172 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:45:53,315 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:45:53,324 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:45:53,325 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:53 BoogieIcfgContainer [2024-01-31 16:45:53,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:45:53,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:45:53,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:45:53,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:45:53,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:45:52" (1/4) ... [2024-01-31 16:45:53,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37430e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:45:53, skipping insertion in model container [2024-01-31 16:45:53,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:52" (2/4) ... [2024-01-31 16:45:53,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37430e6d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:45:53, skipping insertion in model container [2024-01-31 16:45:53,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:52" (3/4) ... [2024-01-31 16:45:53,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37430e6d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:45:53, skipping insertion in model container [2024-01-31 16:45:53,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:53" (4/4) ... [2024-01-31 16:45:53,345 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-01-31 16:45:53,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:45:53,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 16:45:53,361 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:45:53,403 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:45:53,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2024-01-31 16:45:53,471 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2024-01-31 16:45:53,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:53,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-01-31 16:45:53,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2024-01-31 16:45:53,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2024-01-31 16:45:53,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:45:53,498 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;@793a8bb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:45:53,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-01-31 16:45:53,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:45:53,510 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-01-31 16:45:53,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:53,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:53,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:53,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:45:53,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:53,516 INFO L85 PathProgramCache]: Analyzing trace with hash -636492636, now seen corresponding path program 1 times [2024-01-31 16:45:53,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380479723] [2024-01-31 16:45:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:45:53,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:53,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380479723] [2024-01-31 16:45:53,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380479723] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:53,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:53,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:45:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692203507] [2024-01-31 16:45:53,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:53,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:45:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:53,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:45:53,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:45:54,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-01-31 16:45:54,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:54,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:54,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-01-31 16:45:54,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:57,613 INFO L124 PetriNetUnfolderBase]: 30713/46957 cut-off events. [2024-01-31 16:45:57,614 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-01-31 16:45:57,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90086 conditions, 46957 events. 30713/46957 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 351275 event pairs, 7163 based on Foata normal form. 3860/49773 useless extension candidates. Maximal degree in co-relation 90075. Up to 11332 conditions per place. [2024-01-31 16:45:57,885 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 190 selfloop transitions, 11 changer transitions 0/220 dead transitions. [2024-01-31 16:45:57,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 220 transitions, 872 flow [2024-01-31 16:45:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:45:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:45:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 401 transitions. [2024-01-31 16:45:57,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371323529411765 [2024-01-31 16:45:57,903 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 139 flow. Second operand 8 states and 401 transitions. [2024-01-31 16:45:57,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 220 transitions, 872 flow [2024-01-31 16:45:57,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 220 transitions, 862 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:45:57,910 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 189 flow [2024-01-31 16:45:57,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-01-31 16:45:57,914 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-01-31 16:45:57,915 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 189 flow [2024-01-31 16:45:57,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:57,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:57,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:57,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:45:57,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:45:57,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1140138873, now seen corresponding path program 1 times [2024-01-31 16:45:57,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:57,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506680850] [2024-01-31 16:45:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:57,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:45:58,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:58,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506680850] [2024-01-31 16:45:58,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506680850] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:58,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:58,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:45:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164121481] [2024-01-31 16:45:58,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:58,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:45:58,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:45:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:45:58,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-01-31 16:45:58,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:58,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:58,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-01-31 16:45:58,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:02,927 INFO L124 PetriNetUnfolderBase]: 46522/71668 cut-off events. [2024-01-31 16:46:02,940 INFO L125 PetriNetUnfolderBase]: For 13700/13700 co-relation queries the response was YES. [2024-01-31 16:46:03,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153089 conditions, 71668 events. 46522/71668 cut-off events. For 13700/13700 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 570491 event pairs, 9900 based on Foata normal form. 0/70261 useless extension candidates. Maximal degree in co-relation 153075. Up to 27642 conditions per place. [2024-01-31 16:46:03,848 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 193 selfloop transitions, 17 changer transitions 0/228 dead transitions. [2024-01-31 16:46:03,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 228 transitions, 1054 flow [2024-01-31 16:46:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:46:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:46:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2024-01-31 16:46:03,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360294117647058 [2024-01-31 16:46:03,851 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 189 flow. Second operand 8 states and 346 transitions. [2024-01-31 16:46:03,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 228 transitions, 1054 flow [2024-01-31 16:46:04,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 228 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:04,513 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 288 flow [2024-01-31 16:46:04,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-01-31 16:46:04,514 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-01-31 16:46:04,514 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 288 flow [2024-01-31 16:46:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:04,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:04,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:04,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:46:04,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:46:04,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -334648776, now seen corresponding path program 1 times [2024-01-31 16:46:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466311937] [2024-01-31 16:46:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:04,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466311937] [2024-01-31 16:46:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466311937] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:04,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:04,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:46:04,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385081227] [2024-01-31 16:46:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:04,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:04,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-01-31 16:46:04,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:04,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:04,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-01-31 16:46:04,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:11,744 INFO L124 PetriNetUnfolderBase]: 60127/97636 cut-off events. [2024-01-31 16:46:11,745 INFO L125 PetriNetUnfolderBase]: For 38506/38961 co-relation queries the response was YES. [2024-01-31 16:46:12,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225997 conditions, 97636 events. 60127/97636 cut-off events. For 38506/38961 co-relation queries the response was YES. Maximal size of possible extension queue 2965. Compared 870439 event pairs, 20848 based on Foata normal form. 0/96304 useless extension candidates. Maximal degree in co-relation 225977. Up to 41717 conditions per place. [2024-01-31 16:46:12,657 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 215 selfloop transitions, 17 changer transitions 3/257 dead transitions. [2024-01-31 16:46:12,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 257 transitions, 1362 flow [2024-01-31 16:46:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:46:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:46:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2024-01-31 16:46:12,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6672794117647058 [2024-01-31 16:46:12,660 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 288 flow. Second operand 8 states and 363 transitions. [2024-01-31 16:46:12,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 257 transitions, 1362 flow [2024-01-31 16:46:15,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 257 transitions, 1362 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:15,309 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 397 flow [2024-01-31 16:46:15,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-01-31 16:46:15,310 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-01-31 16:46:15,310 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 397 flow [2024-01-31 16:46:15,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:15,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:15,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:15,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:46:15,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:46:15,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash 576937343, now seen corresponding path program 1 times [2024-01-31 16:46:15,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:15,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333635354] [2024-01-31 16:46:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:15,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:15,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333635354] [2024-01-31 16:46:15,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333635354] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:15,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:15,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707616618] [2024-01-31 16:46:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:15,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:46:15,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:15,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:46:15,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:46:15,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-01-31 16:46:15,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:15,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:15,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-01-31 16:46:15,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:20,204 INFO L124 PetriNetUnfolderBase]: 38911/66915 cut-off events. [2024-01-31 16:46:20,205 INFO L125 PetriNetUnfolderBase]: For 41210/42412 co-relation queries the response was YES. [2024-01-31 16:46:20,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169784 conditions, 66915 events. 38911/66915 cut-off events. For 41210/42412 co-relation queries the response was YES. Maximal size of possible extension queue 2460. Compared 631716 event pairs, 13965 based on Foata normal form. 3031/69783 useless extension candidates. Maximal degree in co-relation 169758. Up to 34535 conditions per place. [2024-01-31 16:46:20,671 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 118 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2024-01-31 16:46:20,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 156 transitions, 942 flow [2024-01-31 16:46:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:46:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:46:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-01-31 16:46:20,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-01-31 16:46:20,673 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 397 flow. Second operand 3 states and 150 transitions. [2024-01-31 16:46:20,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 156 transitions, 942 flow [2024-01-31 16:46:23,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:23,187 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 468 flow [2024-01-31 16:46:23,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-01-31 16:46:23,188 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2024-01-31 16:46:23,188 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 468 flow [2024-01-31 16:46:23,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:23,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:23,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:23,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:46:23,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:46:23,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash -873329043, now seen corresponding path program 1 times [2024-01-31 16:46:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:23,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875837923] [2024-01-31 16:46:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:23,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:23,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875837923] [2024-01-31 16:46:23,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875837923] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:23,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:23,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:46:23,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577064550] [2024-01-31 16:46:23,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:23,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-01-31 16:46:23,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:23,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:23,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-01-31 16:46:23,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:25,946 INFO L124 PetriNetUnfolderBase]: 20387/36626 cut-off events. [2024-01-31 16:46:25,947 INFO L125 PetriNetUnfolderBase]: For 30790/31759 co-relation queries the response was YES. [2024-01-31 16:46:26,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103014 conditions, 36626 events. 20387/36626 cut-off events. For 30790/31759 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 327517 event pairs, 5649 based on Foata normal form. 1395/37913 useless extension candidates. Maximal degree in co-relation 102986. Up to 18926 conditions per place. [2024-01-31 16:46:26,157 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 104 selfloop transitions, 10 changer transitions 0/139 dead transitions. [2024-01-31 16:46:26,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 139 transitions, 853 flow [2024-01-31 16:46:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:46:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:46:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-01-31 16:46:26,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-01-31 16:46:26,158 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 468 flow. Second operand 4 states and 160 transitions. [2024-01-31 16:46:26,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 139 transitions, 853 flow [2024-01-31 16:46:26,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 139 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:26,846 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 475 flow [2024-01-31 16:46:26,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-01-31 16:46:26,847 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2024-01-31 16:46:26,847 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 475 flow [2024-01-31 16:46:26,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:26,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:26,848 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, 1, 1] [2024-01-31 16:46:26,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:46:26,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:46:26,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1387097860, now seen corresponding path program 1 times [2024-01-31 16:46:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:26,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823224092] [2024-01-31 16:46:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:26,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823224092] [2024-01-31 16:46:26,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823224092] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:26,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:26,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:46:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294372065] [2024-01-31 16:46:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:46:26,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-01-31 16:46:26,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:26,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:26,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-01-31 16:46:26,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:30,126 INFO L124 PetriNetUnfolderBase]: 24250/40155 cut-off events. [2024-01-31 16:46:30,126 INFO L125 PetriNetUnfolderBase]: For 35806/36718 co-relation queries the response was YES. [2024-01-31 16:46:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116790 conditions, 40155 events. 24250/40155 cut-off events. For 35806/36718 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 331871 event pairs, 4853 based on Foata normal form. 545/40622 useless extension candidates. Maximal degree in co-relation 116761. Up to 11342 conditions per place. [2024-01-31 16:46:30,364 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 202 selfloop transitions, 27 changer transitions 27/277 dead transitions. [2024-01-31 16:46:30,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 277 transitions, 1812 flow [2024-01-31 16:46:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:46:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:46:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 350 transitions. [2024-01-31 16:46:30,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6433823529411765 [2024-01-31 16:46:30,365 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 475 flow. Second operand 8 states and 350 transitions. [2024-01-31 16:46:30,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 277 transitions, 1812 flow [2024-01-31 16:46:30,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 277 transitions, 1758 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:46:30,979 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 568 flow [2024-01-31 16:46:30,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-01-31 16:46:30,979 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-01-31 16:46:30,980 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 568 flow [2024-01-31 16:46:30,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:30,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:30,980 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, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:30,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:46:30,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:46:30,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1283919694, now seen corresponding path program 1 times [2024-01-31 16:46:30,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889088087] [2024-01-31 16:46:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:30,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:31,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889088087] [2024-01-31 16:46:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889088087] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:31,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:31,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:46:31,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910333445] [2024-01-31 16:46:31,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:31,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:31,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:46:31,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-01-31 16:46:31,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:31,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:31,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-01-31 16:46:31,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:33,888 INFO L124 PetriNetUnfolderBase]: 22611/36768 cut-off events. [2024-01-31 16:46:33,889 INFO L125 PetriNetUnfolderBase]: For 36057/36123 co-relation queries the response was YES. [2024-01-31 16:46:34,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108621 conditions, 36768 events. 22611/36768 cut-off events. For 36057/36123 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 290409 event pairs, 4720 based on Foata normal form. 650/37388 useless extension candidates. Maximal degree in co-relation 108593. Up to 7735 conditions per place. [2024-01-31 16:46:34,072 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 204 selfloop transitions, 41 changer transitions 33/295 dead transitions. [2024-01-31 16:46:34,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 295 transitions, 1911 flow [2024-01-31 16:46:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:46:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:46:34,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 447 transitions. [2024-01-31 16:46:34,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477941176470589 [2024-01-31 16:46:34,078 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 568 flow. Second operand 12 states and 447 transitions. [2024-01-31 16:46:34,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 295 transitions, 1911 flow [2024-01-31 16:46:34,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 295 transitions, 1908 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:34,375 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 742 flow [2024-01-31 16:46:34,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-01-31 16:46:34,389 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 49 predicate places. [2024-01-31 16:46:34,389 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 742 flow [2024-01-31 16:46:34,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:34,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:34,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:34,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:46:34,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:46:34,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash 163774449, now seen corresponding path program 1 times [2024-01-31 16:46:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730361056] [2024-01-31 16:46:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:34,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:34,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:34,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730361056] [2024-01-31 16:46:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730361056] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:34,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:46:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176864715] [2024-01-31 16:46:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:34,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:34,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:34,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:46:34,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-01-31 16:46:34,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:34,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:34,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-01-31 16:46:34,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:37,368 INFO L124 PetriNetUnfolderBase]: 21659/35736 cut-off events. [2024-01-31 16:46:37,368 INFO L125 PetriNetUnfolderBase]: For 53821/54310 co-relation queries the response was YES. [2024-01-31 16:46:37,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113966 conditions, 35736 events. 21659/35736 cut-off events. For 53821/54310 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 283583 event pairs, 5623 based on Foata normal form. 422/36119 useless extension candidates. Maximal degree in co-relation 113934. Up to 7264 conditions per place. [2024-01-31 16:46:37,558 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 107 selfloop transitions, 20 changer transitions 150/293 dead transitions. [2024-01-31 16:46:37,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 293 transitions, 2117 flow [2024-01-31 16:46:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:46:37,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:46:37,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 438 transitions. [2024-01-31 16:46:37,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855614973262032 [2024-01-31 16:46:37,560 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 742 flow. Second operand 11 states and 438 transitions. [2024-01-31 16:46:37,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 293 transitions, 2117 flow [2024-01-31 16:46:38,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 293 transitions, 2052 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:46:38,061 INFO L231 Difference]: Finished difference. Result has 121 places, 82 transitions, 457 flow [2024-01-31 16:46:38,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=457, PETRI_PLACES=121, PETRI_TRANSITIONS=82} [2024-01-31 16:46:38,062 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 51 predicate places. [2024-01-31 16:46:38,062 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 82 transitions, 457 flow [2024-01-31 16:46:38,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:38,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:38,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:38,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:46:38,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-01-31 16:46:38,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:38,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1929238582, now seen corresponding path program 1 times [2024-01-31 16:46:38,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:38,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106924256] [2024-01-31 16:46:38,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:38,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106924256] [2024-01-31 16:46:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106924256] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:38,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:38,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436285658] [2024-01-31 16:46:38,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:38,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:38,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:38,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-01-31 16:46:38,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 82 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:38,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:38,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-01-31 16:46:38,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:38,450 INFO L124 PetriNetUnfolderBase]: 1444/2503 cut-off events. [2024-01-31 16:46:38,451 INFO L125 PetriNetUnfolderBase]: For 2626/2692 co-relation queries the response was YES. [2024-01-31 16:46:38,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 2503 events. 1444/2503 cut-off events. For 2626/2692 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13507 event pairs, 509 based on Foata normal form. 114/2610 useless extension candidates. Maximal degree in co-relation 7240. Up to 1376 conditions per place. [2024-01-31 16:46:38,457 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2024-01-31 16:46:38,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 553 flow [2024-01-31 16:46:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:46:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:46:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-01-31 16:46:38,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-01-31 16:46:38,458 INFO L175 Difference]: Start difference. First operand has 121 places, 82 transitions, 457 flow. Second operand 4 states and 148 transitions. [2024-01-31 16:46:38,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 553 flow [2024-01-31 16:46:38,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 476 flow, removed 2 selfloop flow, removed 19 redundant places. [2024-01-31 16:46:38,464 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2024-01-31 16:46:38,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2024-01-31 16:46:38,465 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2024-01-31 16:46:38,466 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2024-01-31 16:46:38,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:38,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2024-01-31 16:46:38,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-01-31 16:46:38,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-01-31 16:46:38,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-01-31 16:46:38,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-01-31 16:46:38,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2024-01-31 16:46:38,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2024-01-31 16:46:38,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-01-31 16:46:38,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-01-31 16:46:38,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:46:38,477 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:38,481 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:46:38,481 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:46:38,487 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:46:38 BasicIcfg [2024-01-31 16:46:38,487 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:46:38,490 INFO L158 Benchmark]: Toolchain (without parser) took 46332.79ms. Allocated memory was 157.3MB in the beginning and 14.7GB in the end (delta: 14.6GB). Free memory was 119.2MB in the beginning and 11.8GB in the end (delta: -11.7GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-01-31 16:46:38,492 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:46:38,492 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 157.3MB. Free memory was 126.4MB in the beginning and 126.1MB in the end (delta: 292.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:46:38,492 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.90ms. Allocated memory is still 157.3MB. Free memory was 118.9MB in the beginning and 80.9MB in the end (delta: 38.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-01-31 16:46:38,492 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.60ms. Allocated memory is still 157.3MB. Free memory was 80.9MB in the beginning and 77.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:46:38,493 INFO L158 Benchmark]: Boogie Preprocessor took 65.31ms. Allocated memory is still 157.3MB. Free memory was 77.9MB in the beginning and 75.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:46:38,494 INFO L158 Benchmark]: RCFGBuilder took 601.34ms. Allocated memory is still 157.3MB. Free memory was 75.2MB in the beginning and 90.2MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-31 16:46:38,495 INFO L158 Benchmark]: TraceAbstraction took 45161.35ms. Allocated memory was 157.3MB in the beginning and 14.7GB in the end (delta: 14.6GB). Free memory was 89.6MB in the beginning and 11.8GB in the end (delta: -11.7GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-01-31 16:46:38,496 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 157.3MB. Free memory was 126.4MB in the beginning and 126.1MB in the end (delta: 292.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.90ms. Allocated memory is still 157.3MB. Free memory was 118.9MB in the beginning and 80.9MB in the end (delta: 38.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.60ms. Allocated memory is still 157.3MB. Free memory was 80.9MB in the beginning and 77.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.31ms. Allocated memory is still 157.3MB. Free memory was 77.9MB in the beginning and 75.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.34ms. Allocated memory is still 157.3MB. Free memory was 75.2MB in the beginning and 90.2MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 45161.35ms. Allocated memory was 157.3MB in the beginning and 14.7GB in the end (delta: 14.6GB). Free memory was 89.6MB in the beginning and 11.8GB in the end (delta: -11.7GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 9 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: 45.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 43.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1030 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1009 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2741 IncrementalHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 4 mSDtfsCounter, 2741 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=7, InterpolantAutomatonStates: 66, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:46:38,523 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