./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.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/mix047_power.oepc_pso.oepc_rmo.oepc.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/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix047_power.oepc_pso.oepc_rmo.oepc.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 17:38:51,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:38:51,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:38:51,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:38:51,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:38:51,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:38:51,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:38:51,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:38:51,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:38:51,305 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:38:51,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:38:51,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:38:51,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:38:51,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:38:51,308 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:38:51,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:38:51,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:38:51,308 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:38:51,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:38:51,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:38:51,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:38:51,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:38:51,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:38:51,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:38:51,311 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:38:51,311 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:38:51,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:38:51,312 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:38:51,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:38:51,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:38:51,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:38:51,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:38:51,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:51,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:38:51,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:38:51,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:38:51,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:38:51,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:38:51,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:38:51,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:38:51,315 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:38:51,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:38:51,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:38:51,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:38:51,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:38:51,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:38:51,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:38:51,512 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:38:51,512 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:38:51,513 INFO L431 ainManager$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/mix047_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-01-31 17:38:52,131 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:38:52,133 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:38:52,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:38:53,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:38:53,426 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:38:53,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:38:53,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f196b0d22/8accc48562934b4fb8b89a59ed9887e5/FLAG9fb24bccc [2024-01-31 17:38:53,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f196b0d22/8accc48562934b4fb8b89a59ed9887e5 [2024-01-31 17:38:53,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:38:53,753 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:38:53,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:53,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:38:53,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:38:53,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:52" (1/2) ... [2024-01-31 17:38:53,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5100d1c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:53, skipping insertion in model container [2024-01-31 17:38:53,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:52" (1/2) ... [2024-01-31 17:38:53,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6822938c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:53, skipping insertion in model container [2024-01-31 17:38:53,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:53" (2/2) ... [2024-01-31 17:38:53,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5100d1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:53, skipping insertion in model container [2024-01-31 17:38:53,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:53" (2/2) ... [2024-01-31 17:38:53,763 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:38:56,181 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:38:56,182 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:38:56,182 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:38:56,209 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:38:56,321 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-31 17:38:56,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:56,522 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:38:56,532 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local [2024-01-31 17:38:56,553 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:38:56,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:56,614 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:38:56,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56 WrapperNode [2024-01-31 17:38:56,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:56,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:56,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:38:56,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:38:56,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,675 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-01-31 17:38:56,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:56,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:38:56,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:38:56,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:38:56,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,716 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:38:56,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:38:56,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:38:56,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:38:56,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:38:56,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (1/1) ... [2024-01-31 17:38:56,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:56,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:38:56,776 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 17:38:56,791 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 17:38:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:38:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:38:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:38:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:38:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:38:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:38:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:38:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:38:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:38:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:38:56,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:38:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:38:56,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:38:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:38:56,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:38:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:38:56,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:38:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:38:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:38:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:38:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:38:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:38:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:38:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:38:56,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:38:56,813 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 17:38:56,918 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:38:56,919 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:38:57,200 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:38:57,201 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:38:57,321 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:38:57,321 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:38:57,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:57 BoogieIcfgContainer [2024-01-31 17:38:57,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:38:57,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:38:57,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:38:57,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:38:57,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:52" (1/4) ... [2024-01-31 17:38:57,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b859447 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:38:57, skipping insertion in model container [2024-01-31 17:38:57,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:38:53" (2/4) ... [2024-01-31 17:38:57,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b859447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:38:57, skipping insertion in model container [2024-01-31 17:38:57,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:56" (3/4) ... [2024-01-31 17:38:57,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b859447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:38:57, skipping insertion in model container [2024-01-31 17:38:57,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:57" (4/4) ... [2024-01-31 17:38:57,329 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:38:57,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:38:57,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:38:57,343 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:38:57,389 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:38:57,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:57,457 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:38:57,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:57,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 17:38:57,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:57,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:38:57,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:38:57,477 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;@6710c157, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:38:57,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:38:57,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:38:57,480 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:38:57,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:57,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:57,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:57,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:57,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash 12552922, now seen corresponding path program 1 times [2024-01-31 17:38:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:57,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595965165] [2024-01-31 17:38:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:57,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:57,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595965165] [2024-01-31 17:38:57,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595965165] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:57,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424287789] [2024-01-31 17:38:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:38:57,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:38:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:38:57,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:57,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 17:38:57,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:57,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:57,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:58,503 INFO L124 PetriNetUnfolderBase]: 3179/5553 cut-off events. [2024-01-31 17:38:58,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:58,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10081 conditions, 5553 events. 3179/5553 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41471 event pairs, 3179 based on Foata normal form. 135/5024 useless extension candidates. Maximal degree in co-relation 10069. Up to 4391 conditions per place. [2024-01-31 17:38:58,549 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:38:58,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:38:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:38:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:38:58,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:38:58,563 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:38:58,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:58,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:38:58,574 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:58,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-01-31 17:38:58,578 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:38:58,579 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:58,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 17:38:58,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:58,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:58,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:38:58,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:58,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash 12552923, now seen corresponding path program 1 times [2024-01-31 17:38:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:58,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264694629] [2024-01-31 17:38:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:58,741 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 17:38:58,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:58,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264694629] [2024-01-31 17:38:58,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264694629] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:58,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:58,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:58,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664915362] [2024-01-31 17:38:58,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:58,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:58,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:58,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:58,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 17:38:58,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:58,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:58,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:59,193 INFO L124 PetriNetUnfolderBase]: 2495/4181 cut-off events. [2024-01-31 17:38:59,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:59,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 4181 events. 2495/4181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29208 event pairs, 443 based on Foata normal form. 0/4072 useless extension candidates. Maximal degree in co-relation 7751. Up to 2779 conditions per place. [2024-01-31 17:38:59,214 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:38:59,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:59,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:38:59,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:38:59,219 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:38:59,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:59,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:38:59,226 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:59,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-01-31 17:38:59,227 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:38:59,227 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:59,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 17:38:59,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:59,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:38:59,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:59,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:59,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1644634637, now seen corresponding path program 1 times [2024-01-31 17:38:59,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:59,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20064291] [2024-01-31 17:38:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:59,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:59,315 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 17:38:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20064291] [2024-01-31 17:38:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20064291] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:59,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:59,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:38:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058990684] [2024-01-31 17:38:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:59,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:59,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:38:59,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:59,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:59,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:38:59,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:59,815 INFO L124 PetriNetUnfolderBase]: 3311/5247 cut-off events. [2024-01-31 17:38:59,815 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:38:59,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10240 conditions, 5247 events. 3311/5247 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 35389 event pairs, 2495 based on Foata normal form. 0/4897 useless extension candidates. Maximal degree in co-relation 10236. Up to 3465 conditions per place. [2024-01-31 17:38:59,839 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:38:59,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:38:59,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:38:59,841 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:38:59,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:59,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:38:59,842 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:59,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:38:59,843 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:38:59,843 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:59,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:59,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:59,844 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 17:38:59,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:38:59,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:59,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash -555933389, now seen corresponding path program 1 times [2024-01-31 17:38:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:59,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398666525] [2024-01-31 17:38:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:00,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398666525] [2024-01-31 17:39:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398666525] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:00,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:39:00,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912272846] [2024-01-31 17:39:00,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:00,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:39:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:39:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:39:00,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-01-31 17:39:00,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 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 17:39:00,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:00,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-01-31 17:39:00,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:00,759 INFO L124 PetriNetUnfolderBase]: 4613/6945 cut-off events. [2024-01-31 17:39:00,760 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-01-31 17:39:00,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13573 conditions, 6945 events. 4613/6945 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 45030 event pairs, 887 based on Foata normal form. 180/6991 useless extension candidates. Maximal degree in co-relation 13569. Up to 4417 conditions per place. [2024-01-31 17:39:00,799 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 34 selfloop transitions, 2 changer transitions 39/92 dead transitions. [2024-01-31 17:39:00,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 344 flow [2024-01-31 17:39:00,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:39:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:39:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 17:39:00,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-01-31 17:39:00,804 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 224 transitions. [2024-01-31 17:39:00,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 344 flow [2024-01-31 17:39:00,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:39:00,815 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 111 flow [2024-01-31 17:39:00,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2024-01-31 17:39:00,817 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-01-31 17:39:00,817 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 111 flow [2024-01-31 17:39:00,817 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 17:39:00,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:00,818 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] [2024-01-31 17:39:00,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:39:00,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:00,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:00,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2044239521, now seen corresponding path program 1 times [2024-01-31 17:39:00,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:00,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677767118] [2024-01-31 17:39:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:00,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:01,008 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 17:39:01,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:01,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677767118] [2024-01-31 17:39:01,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677767118] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:01,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:01,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:39:01,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194776652] [2024-01-31 17:39:01,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:01,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-01-31 17:39:01,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 17:39:01,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:01,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-01-31 17:39:01,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:04,375 INFO L124 PetriNetUnfolderBase]: 32291/46236 cut-off events. [2024-01-31 17:39:04,376 INFO L125 PetriNetUnfolderBase]: For 7748/7748 co-relation queries the response was YES. [2024-01-31 17:39:04,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98944 conditions, 46236 events. 32291/46236 cut-off events. For 7748/7748 co-relation queries the response was YES. Maximal size of possible extension queue 1734. Compared 322886 event pairs, 3123 based on Foata normal form. 872/47090 useless extension candidates. Maximal degree in co-relation 98935. Up to 18247 conditions per place. [2024-01-31 17:39:04,640 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 69 selfloop transitions, 11 changer transitions 85/176 dead transitions. [2024-01-31 17:39:04,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 176 transitions, 748 flow [2024-01-31 17:39:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-01-31 17:39:04,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:39:04,642 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 111 flow. Second operand 10 states and 318 transitions. [2024-01-31 17:39:04,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 176 transitions, 748 flow [2024-01-31 17:39:05,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 176 transitions, 712 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-01-31 17:39:05,932 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 212 flow [2024-01-31 17:39:05,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=212, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2024-01-31 17:39:05,933 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2024-01-31 17:39:05,933 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 212 flow [2024-01-31 17:39:05,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 17:39:05,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:05,933 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] [2024-01-31 17:39:05,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:39:05,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:05,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1801667120, now seen corresponding path program 1 times [2024-01-31 17:39:05,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:05,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259402034] [2024-01-31 17:39:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:06,070 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 17:39:06,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259402034] [2024-01-31 17:39:06,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259402034] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:06,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:06,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:39:06,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751379622] [2024-01-31 17:39:06,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:06,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-01-31 17:39:06,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 17:39:06,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:06,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-01-31 17:39:06,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:09,940 INFO L124 PetriNetUnfolderBase]: 30918/44715 cut-off events. [2024-01-31 17:39:09,941 INFO L125 PetriNetUnfolderBase]: For 47593/47648 co-relation queries the response was YES. [2024-01-31 17:39:10,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125768 conditions, 44715 events. 30918/44715 cut-off events. For 47593/47648 co-relation queries the response was YES. Maximal size of possible extension queue 1659. Compared 314958 event pairs, 3048 based on Foata normal form. 827/45514 useless extension candidates. Maximal degree in co-relation 125755. Up to 17564 conditions per place. [2024-01-31 17:39:10,238 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 73 selfloop transitions, 19 changer transitions 90/193 dead transitions. [2024-01-31 17:39:10,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 193 transitions, 1162 flow [2024-01-31 17:39:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-01-31 17:39:10,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590566037735849 [2024-01-31 17:39:10,240 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 212 flow. Second operand 10 states and 313 transitions. [2024-01-31 17:39:10,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 193 transitions, 1162 flow [2024-01-31 17:39:10,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 193 transitions, 1148 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:39:10,403 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 440 flow [2024-01-31 17:39:10,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=440, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-01-31 17:39:10,407 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2024-01-31 17:39:10,407 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 440 flow [2024-01-31 17:39:10,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 17:39:10,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:10,408 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] [2024-01-31 17:39:10,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:39:10,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:10,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:10,409 INFO L85 PathProgramCache]: Analyzing trace with hash 540849053, now seen corresponding path program 1 times [2024-01-31 17:39:10,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029912997] [2024-01-31 17:39:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:10,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029912997] [2024-01-31 17:39:10,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029912997] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:10,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427176843] [2024-01-31 17:39:10,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:10,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:10,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-01-31 17:39:10,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 17:39:10,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:10,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-01-31 17:39:10,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:16,660 INFO L124 PetriNetUnfolderBase]: 41902/61361 cut-off events. [2024-01-31 17:39:16,660 INFO L125 PetriNetUnfolderBase]: For 162515/162972 co-relation queries the response was YES. [2024-01-31 17:39:16,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196815 conditions, 61361 events. 41902/61361 cut-off events. For 162515/162972 co-relation queries the response was YES. Maximal size of possible extension queue 2275. Compared 462896 event pairs, 6789 based on Foata normal form. 1318/62616 useless extension candidates. Maximal degree in co-relation 196795. Up to 20533 conditions per place. [2024-01-31 17:39:17,118 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 79 selfloop transitions, 29 changer transitions 86/205 dead transitions. [2024-01-31 17:39:17,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 205 transitions, 1488 flow [2024-01-31 17:39:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-01-31 17:39:17,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-01-31 17:39:17,121 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 440 flow. Second operand 10 states and 315 transitions. [2024-01-31 17:39:17,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 205 transitions, 1488 flow [2024-01-31 17:39:17,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 205 transitions, 1442 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-01-31 17:39:17,935 INFO L231 Difference]: Finished difference. Result has 95 places, 77 transitions, 671 flow [2024-01-31 17:39:17,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=671, PETRI_PLACES=95, PETRI_TRANSITIONS=77} [2024-01-31 17:39:17,937 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 34 predicate places. [2024-01-31 17:39:17,937 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 77 transitions, 671 flow [2024-01-31 17:39:17,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 17:39:17,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:17,938 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] [2024-01-31 17:39:17,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:39:17,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:17,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:17,939 INFO L85 PathProgramCache]: Analyzing trace with hash 278077103, now seen corresponding path program 1 times [2024-01-31 17:39:17,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:17,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060980337] [2024-01-31 17:39:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:17,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:18,029 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 17:39:18,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:18,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060980337] [2024-01-31 17:39:18,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060980337] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:18,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:18,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:39:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250894167] [2024-01-31 17:39:18,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:18,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:39:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:39:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:39:18,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:39:18,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 77 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 17:39:18,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:18,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:39:18,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:25,832 INFO L124 PetriNetUnfolderBase]: 51160/79037 cut-off events. [2024-01-31 17:39:25,832 INFO L125 PetriNetUnfolderBase]: For 179138/191097 co-relation queries the response was YES. [2024-01-31 17:39:26,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214956 conditions, 79037 events. 51160/79037 cut-off events. For 179138/191097 co-relation queries the response was YES. Maximal size of possible extension queue 3097. Compared 664534 event pairs, 8251 based on Foata normal form. 7878/84512 useless extension candidates. Maximal degree in co-relation 214927. Up to 39955 conditions per place. [2024-01-31 17:39:26,703 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 65 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-01-31 17:39:26,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 117 transitions, 1023 flow [2024-01-31 17:39:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:39:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:39:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:39:26,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:39:26,704 INFO L175 Difference]: Start difference. First operand has 95 places, 77 transitions, 671 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:39:26,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 117 transitions, 1023 flow [2024-01-31 17:39:26,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 117 transitions, 991 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-01-31 17:39:26,995 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 693 flow [2024-01-31 17:39:26,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=693, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-01-31 17:39:26,995 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 26 predicate places. [2024-01-31 17:39:26,996 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 693 flow [2024-01-31 17:39:26,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 17:39:26,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:26,996 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] [2024-01-31 17:39:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:39:26,996 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:26,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 369190117, now seen corresponding path program 1 times [2024-01-31 17:39:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:26,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810057247] [2024-01-31 17:39:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:26,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:27,184 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 17:39:27,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810057247] [2024-01-31 17:39:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810057247] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:27,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:27,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:27,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902318159] [2024-01-31 17:39:27,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:27,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:27,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:27,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:27,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-01-31 17:39:27,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 693 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 17:39:27,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:27,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-01-31 17:39:27,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand