./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix005.opt.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/mix005.opt.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/mix005.opt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix005.opt.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 17:33:21,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:33:21,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:33:21,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:33:21,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:33:21,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:33:21,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:33:21,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:33:21,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:33:21,451 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:33:21,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:33:21,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:33:21,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:33:21,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:33:21,453 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:33:21,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:33:21,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:33:21,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:33:21,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:33:21,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:33:21,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:33:21,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:33:21,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:33:21,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:33:21,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:33:21,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:33:21,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:33:21,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:33:21,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:33:21,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:33:21,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:33:21,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:33:21,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:33:21,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:33:21,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:33:21,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:33:21,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:33:21,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:33:21,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:33:21,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:33:21,460 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:33:21,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:33:21,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:33:21,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:33:21,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:33:21,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:33:21,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:33:21,693 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:33:21,694 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:33:21,695 INFO L431 ainManager$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/mix005.opt.yml/witness.yml [2024-01-31 17:33:22,548 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:33:22,548 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:33:22,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2024-01-31 17:33:23,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:33:23,875 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:33:23,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2024-01-31 17:33:23,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f65b1250/edbc15c4c1e343e882be11b058f95b79/FLAGc33534e26 [2024-01-31 17:33:23,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f65b1250/edbc15c4c1e343e882be11b058f95b79 [2024-01-31 17:33:23,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:33:23,904 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:33:23,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:33:23,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:33:23,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:33:23,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:22" (1/2) ... [2024-01-31 17:33:23,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adc79 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:23, skipping insertion in model container [2024-01-31 17:33:23,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:22" (1/2) ... [2024-01-31 17:33:23,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2075074c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:23, skipping insertion in model container [2024-01-31 17:33:23,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:33:23" (2/2) ... [2024-01-31 17:33:23,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:23, skipping insertion in model container [2024-01-31 17:33:23,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:33:23" (2/2) ... [2024-01-31 17:33:23,916 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:33:26,157 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:33:26,158 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:33:26,158 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:33:26,185 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:33:26,299 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/mix005.opt.i[944,957] [2024-01-31 17:33:26,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:33:26,442 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:33:26,450 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/mix005.opt.i[944,957] Start Parsing Local [2024-01-31 17:33:26,489 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:33:26,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:33:26,551 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:33:26,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26 WrapperNode [2024-01-31 17:33:26,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:33:26,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:33:26,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:33:26,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:33:26,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,598 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2024-01-31 17:33:26,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:33:26,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:33:26,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:33:26,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:33:26,607 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,611 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,623 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 17:33:26,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:33:26,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:33:26,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:33:26,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:33:26,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (1/1) ... [2024-01-31 17:33:26,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:33:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:33:26,733 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 17:33:26,789 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 17:33:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:33:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:33:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:33:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:33:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:33:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:33:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:33:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:33:26,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:33:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:33:26,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:33:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:33:26,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:33:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:33:26,807 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:33:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:33:26,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:33:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:33:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:33:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:33:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:33:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:33:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:33:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:33:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:33:26,811 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 17:33:26,944 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:33:26,946 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:33:27,239 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:33:27,239 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:33:27,426 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:33:27,426 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:33:27,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:27 BoogieIcfgContainer [2024-01-31 17:33:27,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:33:27,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:33:27,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:33:27,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:33:27,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:22" (1/4) ... [2024-01-31 17:33:27,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391a8e44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:33:27, skipping insertion in model container [2024-01-31 17:33:27,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:33:23" (2/4) ... [2024-01-31 17:33:27,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391a8e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:33:27, skipping insertion in model container [2024-01-31 17:33:27,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:26" (3/4) ... [2024-01-31 17:33:27,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391a8e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:33:27, skipping insertion in model container [2024-01-31 17:33:27,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:27" (4/4) ... [2024-01-31 17:33:27,437 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2024-01-31 17:33:27,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:33:27,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:33:27,451 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:33:27,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:33:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:33:27,540 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:33:27,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:27,543 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 6. Compared 110 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 17:33:27,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:33:27,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:33:27,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:33:27,565 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;@11a9f276, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:33:27,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:33:27,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:33:27,571 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-01-31 17:33:27,571 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:27,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:27,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:27,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:27,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash 563509700, now seen corresponding path program 1 times [2024-01-31 17:33:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:27,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671377318] [2024-01-31 17:33:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:27,865 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 17:33:27,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671377318] [2024-01-31 17:33:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671377318] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:27,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:33:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280477168] [2024-01-31 17:33:27,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:33:27,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:27,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:33:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:33:27,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-01-31 17:33:27,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 17:33:27,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:27,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-01-31 17:33:27,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:28,203 INFO L124 PetriNetUnfolderBase]: 1059/2115 cut-off events. [2024-01-31 17:33:28,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:28,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 2115 events. 1059/2115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16854 event pairs, 1059 based on Foata normal form. 72/1901 useless extension candidates. Maximal degree in co-relation 3675. Up to 1529 conditions per place. [2024-01-31 17:33:28,228 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 22 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:33:28,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 150 flow [2024-01-31 17:33:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:33:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:33:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 82 transitions. [2024-01-31 17:33:28,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:33:28,242 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 82 transitions. [2024-01-31 17:33:28,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 150 flow [2024-01-31 17:33:28,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:33:28,251 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:33:28,253 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 17:33:28,256 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:33:28,256 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:33:28,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 17:33:28,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:28,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:28,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:33:28,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:28,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:28,259 INFO L85 PathProgramCache]: Analyzing trace with hash 563509701, now seen corresponding path program 1 times [2024-01-31 17:33:28,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:28,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705504707] [2024-01-31 17:33:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:28,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:28,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705504707] [2024-01-31 17:33:28,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705504707] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:28,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:28,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:33:28,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360347778] [2024-01-31 17:33:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:28,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:33:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:33:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:33:28,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-01-31 17:33:28,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 17:33:28,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:28,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-01-31 17:33:28,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:28,817 INFO L124 PetriNetUnfolderBase]: 879/1551 cut-off events. [2024-01-31 17:33:28,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:28,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1551 events. 879/1551 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10718 event pairs, 159 based on Foata normal form. 0/1481 useless extension candidates. Maximal degree in co-relation 2865. Up to 1009 conditions per place. [2024-01-31 17:33:28,830 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 26 selfloop transitions, 2 changer transitions 2/55 dead transitions. [2024-01-31 17:33:28,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 178 flow [2024-01-31 17:33:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:33:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:33:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-01-31 17:33:28,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421383647798742 [2024-01-31 17:33:28,836 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 118 transitions. [2024-01-31 17:33:28,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 178 flow [2024-01-31 17:33:28,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:33:28,843 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:33:28,843 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 17:33:28,843 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:33:28,844 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:33:28,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 17:33:28,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:28,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:28,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:33:28,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:28,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1743367824, now seen corresponding path program 1 times [2024-01-31 17:33:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673974966] [2024-01-31 17:33:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:28,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:28,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673974966] [2024-01-31 17:33:28,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673974966] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:28,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:28,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:33:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298735615] [2024-01-31 17:33:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:33:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:33:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:33:28,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-01-31 17:33:28,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 17:33:28,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:28,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-01-31 17:33:28,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:29,087 INFO L124 PetriNetUnfolderBase]: 1175/1955 cut-off events. [2024-01-31 17:33:29,087 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-01-31 17:33:29,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 1955 events. 1175/1955 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 13882 event pairs, 879 based on Foata normal form. 0/1825 useless extension candidates. Maximal degree in co-relation 3782. Up to 1277 conditions per place. [2024-01-31 17:33:29,098 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 29 selfloop transitions, 1 changer transitions 1/52 dead transitions. [2024-01-31 17:33:29,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 180 flow [2024-01-31 17:33:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:33:29,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:33:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-01-31 17:33:29,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2024-01-31 17:33:29,103 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 107 transitions. [2024-01-31 17:33:29,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 180 flow [2024-01-31 17:33:29,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:33:29,106 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:33:29,106 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 17:33:29,107 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:33:29,107 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:33:29,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 17:33:29,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:29,108 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 17:33:29,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:33:29,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:29,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1790172733, now seen corresponding path program 1 times [2024-01-31 17:33:29,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:29,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586168232] [2024-01-31 17:33:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:29,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:29,352 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 17:33:29,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:29,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586168232] [2024-01-31 17:33:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586168232] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:29,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:33:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594144881] [2024-01-31 17:33:29,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:29,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:29,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-01-31 17:33:29,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 17:33:29,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:29,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-01-31 17:33:29,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:30,981 INFO L124 PetriNetUnfolderBase]: 13285/20317 cut-off events. [2024-01-31 17:33:30,981 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-01-31 17:33:31,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39211 conditions, 20317 events. 13285/20317 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 153281 event pairs, 4391 based on Foata normal form. 476/20579 useless extension candidates. Maximal degree in co-relation 39207. Up to 10353 conditions per place. [2024-01-31 17:33:31,061 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 43 selfloop transitions, 8 changer transitions 55/121 dead transitions. [2024-01-31 17:33:31,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 121 transitions, 470 flow [2024-01-31 17:33:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:33:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:33:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-01-31 17:33:31,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6495956873315364 [2024-01-31 17:33:31,063 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 241 transitions. [2024-01-31 17:33:31,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 121 transitions, 470 flow [2024-01-31 17:33:31,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 121 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:33:31,160 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 193 flow [2024-01-31 17:33:31,160 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-01-31 17:33:31,161 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2024-01-31 17:33:31,161 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 193 flow [2024-01-31 17:33:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 17:33:31,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:31,162 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 17:33:31,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:33:31,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:31,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1232430248, now seen corresponding path program 1 times [2024-01-31 17:33:31,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:31,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077570817] [2024-01-31 17:33:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:31,293 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 17:33:31,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077570817] [2024-01-31 17:33:31,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077570817] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:31,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:31,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:33:31,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62836699] [2024-01-31 17:33:31,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:31,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:33:31,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:31,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:33:31,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:33:31,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-01-31 17:33:31,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 17:33:31,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:31,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-01-31 17:33:31,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:32,948 INFO L124 PetriNetUnfolderBase]: 11613/18585 cut-off events. [2024-01-31 17:33:32,948 INFO L125 PetriNetUnfolderBase]: For 18364/18454 co-relation queries the response was YES. [2024-01-31 17:33:32,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53810 conditions, 18585 events. 11613/18585 cut-off events. For 18364/18454 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 143965 event pairs, 1617 based on Foata normal form. 440/18903 useless extension candidates. Maximal degree in co-relation 53801. Up to 8059 conditions per place. [2024-01-31 17:33:33,057 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 59 selfloop transitions, 9 changer transitions 82/165 dead transitions. [2024-01-31 17:33:33,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 165 transitions, 1010 flow [2024-01-31 17:33:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:33:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:33:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2024-01-31 17:33:33,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6169811320754717 [2024-01-31 17:33:33,060 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 193 flow. Second operand 10 states and 327 transitions. [2024-01-31 17:33:33,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 165 transitions, 1010 flow [2024-01-31 17:33:33,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 165 transitions, 922 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:33:33,150 INFO L231 Difference]: Finished difference. Result has 78 places, 55 transitions, 273 flow [2024-01-31 17:33:33,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=273, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2024-01-31 17:33:33,151 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:33:33,151 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 273 flow [2024-01-31 17:33:33,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 17:33:33,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:33,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:33,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:33:33,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:33,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:33,152 INFO L85 PathProgramCache]: Analyzing trace with hash 621672303, now seen corresponding path program 1 times [2024-01-31 17:33:33,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:33,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937786668] [2024-01-31 17:33:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:33,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:33,263 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 17:33:33,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:33,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937786668] [2024-01-31 17:33:33,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937786668] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:33,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:33,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:33:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949735642] [2024-01-31 17:33:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:33,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:33,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:33,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-01-31 17:33:33,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 17:33:33,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:33,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-01-31 17:33:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:34,537 INFO L124 PetriNetUnfolderBase]: 6285/10760 cut-off events. [2024-01-31 17:33:34,537 INFO L125 PetriNetUnfolderBase]: For 17095/18375 co-relation queries the response was YES. [2024-01-31 17:33:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31764 conditions, 10760 events. 6285/10760 cut-off events. For 17095/18375 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 89063 event pairs, 2234 based on Foata normal form. 324/10286 useless extension candidates. Maximal degree in co-relation 31747. Up to 4866 conditions per place. [2024-01-31 17:33:34,614 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 30 selfloop transitions, 4 changer transitions 33/96 dead transitions. [2024-01-31 17:33:34,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 593 flow [2024-01-31 17:33:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:33:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:33:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 17:33:34,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118598382749326 [2024-01-31 17:33:34,616 INFO L175 Difference]: Start difference. First operand has 78 places, 55 transitions, 273 flow. Second operand 7 states and 227 transitions. [2024-01-31 17:33:34,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 593 flow [2024-01-31 17:33:34,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 562 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-01-31 17:33:34,687 INFO L231 Difference]: Finished difference. Result has 78 places, 55 transitions, 276 flow [2024-01-31 17:33:34,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2024-01-31 17:33:34,688 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:33:34,688 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 276 flow [2024-01-31 17:33:34,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 17:33:34,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:34,689 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 17:33:34,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:33:34,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:34,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:34,690 INFO L85 PathProgramCache]: Analyzing trace with hash -132327452, now seen corresponding path program 1 times [2024-01-31 17:33:34,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:34,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658963044] [2024-01-31 17:33:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:34,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:34,854 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 17:33:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658963044] [2024-01-31 17:33:34,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658963044] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:34,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:34,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:33:34,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430727197] [2024-01-31 17:33:34,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:34,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:33:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:33:34,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:33:34,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-01-31 17:33:34,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 17:33:34,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:34,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-01-31 17:33:34,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:36,297 INFO L124 PetriNetUnfolderBase]: 8707/13709 cut-off events. [2024-01-31 17:33:36,297 INFO L125 PetriNetUnfolderBase]: For 22590/22594 co-relation queries the response was YES. [2024-01-31 17:33:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44081 conditions, 13709 events. 8707/13709 cut-off events. For 22590/22594 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 98438 event pairs, 2457 based on Foata normal form. 240/13873 useless extension candidates. Maximal degree in co-relation 44062. Up to 7139 conditions per place. [2024-01-31 17:33:36,383 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 61 selfloop transitions, 18 changer transitions 56/150 dead transitions. [2024-01-31 17:33:36,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 150 transitions, 1013 flow [2024-01-31 17:33:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:33:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:33:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-01-31 17:33:36,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:33:36,385 INFO L175 Difference]: Start difference. First operand has 78 places, 55 transitions, 276 flow. Second operand 10 states and 318 transitions. [2024-01-31 17:33:36,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 150 transitions, 1013 flow [2024-01-31 17:33:36,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 150 transitions, 941 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-01-31 17:33:36,449 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 363 flow [2024-01-31 17:33:36,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-01-31 17:33:36,450 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 20 predicate places. [2024-01-31 17:33:36,450 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 363 flow [2024-01-31 17:33:36,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 17:33:36,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:36,451 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 17:33:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:33:36,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:36,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1381663119, now seen corresponding path program 1 times [2024-01-31 17:33:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900463273] [2024-01-31 17:33:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:36,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:36,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900463273] [2024-01-31 17:33:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900463273] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:36,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:33:36,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561287536] [2024-01-31 17:33:36,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:36,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:33:36,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:36,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:33:36,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:33:36,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-01-31 17:33:36,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 363 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 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 17:33:36,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:36,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-01-31 17:33:36,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:38,620 INFO L124 PetriNetUnfolderBase]: 15828/24542 cut-off events. [2024-01-31 17:33:38,622 INFO L125 PetriNetUnfolderBase]: For 34172/37725 co-relation queries the response was YES. [2024-01-31 17:33:38,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68369 conditions, 24542 events. 15828/24542 cut-off events. For 34172/37725 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 187246 event pairs, 2656 based on Foata normal form. 1163/24741 useless extension candidates. Maximal degree in co-relation 68350. Up to 11940 conditions per place. [2024-01-31 17:33:38,817 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 57 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2024-01-31 17:33:38,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 95 transitions, 643 flow [2024-01-31 17:33:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:33:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:33:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-01-31 17:33:38,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7122641509433962 [2024-01-31 17:33:38,819 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 363 flow. Second operand 4 states and 151 transitions. [2024-01-31 17:33:38,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 95 transitions, 643 flow [2024-01-31 17:33:39,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 95 transitions, 627 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 17:33:39,252 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 393 flow [2024-01-31 17:33:39,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2024-01-31 17:33:39,252 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-01-31 17:33:39,253 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 393 flow [2024-01-31 17:33:39,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 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 17:33:39,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:39,253 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 17:33:39,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:33:39,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:39,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:39,254 INFO L85 PathProgramCache]: Analyzing trace with hash -796306585, now seen corresponding path program 1 times [2024-01-31 17:33:39,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:39,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922878193] [2024-01-31 17:33:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:39,421 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 17:33:39,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:39,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922878193] [2024-01-31 17:33:39,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922878193] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:39,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:39,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:33:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601533212] [2024-01-31 17:33:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:39,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:39,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:39,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:33:39,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:33:39,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:39,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:33:39,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:42,425 INFO L124 PetriNetUnfolderBase]: 17403/28522 cut-off events. [2024-01-31 17:33:42,425 INFO L125 PetriNetUnfolderBase]: For 41066/43270 co-relation queries the response was YES. [2024-01-31 17:33:42,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84036 conditions, 28522 events. 17403/28522 cut-off events. For 41066/43270 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 242512 event pairs, 7848 based on Foata normal form. 417/25990 useless extension candidates. Maximal degree in co-relation 84020. Up to 11414 conditions per place. [2024-01-31 17:33:42,581 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 73 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-01-31 17:33:42,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 743 flow [2024-01-31 17:33:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:33:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:33:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-01-31 17:33:42,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-01-31 17:33:42,584 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 393 flow. Second operand 7 states and 231 transitions. [2024-01-31 17:33:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 743 flow [2024-01-31 17:33:42,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:33:42,674 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 483 flow [2024-01-31 17:33:42,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-01-31 17:33:42,675 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-01-31 17:33:42,675 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 483 flow [2024-01-31 17:33:42,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:33:42,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:42,675 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 17:33:42,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:33:42,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:42,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1361686073, now seen corresponding path program 1 times [2024-01-31 17:33:42,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:42,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813174505] [2024-01-31 17:33:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:42,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:42,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813174505] [2024-01-31 17:33:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813174505] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:42,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:42,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:33:42,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144981816] [2024-01-31 17:33:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:42,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:42,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:42,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-01-31 17:33:42,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 483 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 17:33:42,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:42,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-01-31 17:33:42,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:45,521 INFO L124 PetriNetUnfolderBase]: 20230/31235 cut-off events. [2024-01-31 17:33:45,521 INFO L125 PetriNetUnfolderBase]: For 45472/49607 co-relation queries the response was YES. [2024-01-31 17:33:45,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94392 conditions, 31235 events. 20230/31235 cut-off events. For 45472/49607 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 240492 event pairs, 2038 based on Foata normal form. 1637/31889 useless extension candidates. Maximal degree in co-relation 94371. Up to 12140 conditions per place. [2024-01-31 17:33:45,711 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 74 selfloop transitions, 10 changer transitions 3/121 dead transitions. [2024-01-31 17:33:45,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 903 flow [2024-01-31 17:33:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:33:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:33:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-01-31 17:33:45,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7283018867924528 [2024-01-31 17:33:45,885 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 483 flow. Second operand 5 states and 193 transitions. [2024-01-31 17:33:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 903 flow [2024-01-31 17:33:46,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 121 transitions, 887 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 17:33:46,015 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 506 flow [2024-01-31 17:33:46,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-01-31 17:33:46,016 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2024-01-31 17:33:46,017 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 506 flow [2024-01-31 17:33:46,017 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 17:33:46,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:46,017 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] [2024-01-31 17:33:46,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:33:46,017 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:46,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2031121304, now seen corresponding path program 1 times [2024-01-31 17:33:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205520888] [2024-01-31 17:33:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:46,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:46,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205520888] [2024-01-31 17:33:46,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205520888] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:46,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:46,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:33:46,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381021810] [2024-01-31 17:33:46,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:46,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:33:46,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:33:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:33:46,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-01-31 17:33:46,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 506 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 17:33:46,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:46,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-01-31 17:33:46,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:51,534 INFO L124 PetriNetUnfolderBase]: 28559/46771 cut-off events. [2024-01-31 17:33:51,534 INFO L125 PetriNetUnfolderBase]: For 97515/103854 co-relation queries the response was YES. [2024-01-31 17:33:51,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154712 conditions, 46771 events. 28559/46771 cut-off events. For 97515/103854 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 415705 event pairs, 6354 based on Foata normal form. 706/44110 useless extension candidates. Maximal degree in co-relation 154689. Up to 14593 conditions per place. [2024-01-31 17:33:51,911 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 103 selfloop transitions, 29 changer transitions 17/173 dead transitions. [2024-01-31 17:33:51,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 173 transitions, 1387 flow [2024-01-31 17:33:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:33:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:33:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2024-01-31 17:33:51,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-01-31 17:33:51,913 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 506 flow. Second operand 8 states and 265 transitions. [2024-01-31 17:33:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 173 transitions, 1387 flow [2024-01-31 17:33:52,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 173 transitions, 1360 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-01-31 17:33:52,374 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 767 flow [2024-01-31 17:33:52,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=767, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2024-01-31 17:33:52,374 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 34 predicate places. [2024-01-31 17:33:52,374 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 767 flow [2024-01-31 17:33:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 17:33:52,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:52,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:52,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:33:52,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:52,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 32145230, now seen corresponding path program 2 times [2024-01-31 17:33:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207100042] [2024-01-31 17:33:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:52,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:52,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:52,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207100042] [2024-01-31 17:33:52,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207100042] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:52,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:52,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:33:52,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543549756] [2024-01-31 17:33:52,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:52,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:33:52,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:52,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:33:52,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:33:52,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-01-31 17:33:52,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 767 flow. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 17:33:52,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:52,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-01-31 17:33:52,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:56,802 INFO L124 PetriNetUnfolderBase]: 28044/42492 cut-off events. [2024-01-31 17:33:56,802 INFO L125 PetriNetUnfolderBase]: For 95590/109304 co-relation queries the response was YES. [2024-01-31 17:33:56,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143331 conditions, 42492 events. 28044/42492 cut-off events. For 95590/109304 co-relation queries the response was YES. Maximal size of possible extension queue 2375. Compared 333988 event pairs, 1829 based on Foata normal form. 2318/43338 useless extension candidates. Maximal degree in co-relation 143305. Up to 14364 conditions per place. [2024-01-31 17:33:57,061 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 87 selfloop transitions, 14 changer transitions 16/161 dead transitions. [2024-01-31 17:33:57,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 1487 flow [2024-01-31 17:33:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:33:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:33:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-01-31 17:33:57,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7327044025157232 [2024-01-31 17:33:57,069 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 767 flow. Second operand 6 states and 233 transitions. [2024-01-31 17:33:57,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 1487 flow [2024-01-31 17:33:57,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 1457 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-01-31 17:33:57,202 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 791 flow [2024-01-31 17:33:57,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=791, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2024-01-31 17:33:57,203 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2024-01-31 17:33:57,203 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 791 flow [2024-01-31 17:33:57,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 17:33:57,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:57,204 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 17:33:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:33:57,205 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:57,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash -514785000, now seen corresponding path program 1 times [2024-01-31 17:33:57,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:57,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453955123] [2024-01-31 17:33:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453955123] [2024-01-31 17:33:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453955123] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:57,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:33:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487088055] [2024-01-31 17:33:57,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:57,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:33:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:33:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:33:57,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-01-31 17:33:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 791 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 17:33:57,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:57,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-01-31 17:33:57,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:00,996 INFO L124 PetriNetUnfolderBase]: 24679/37231 cut-off events. [2024-01-31 17:34:00,997 INFO L125 PetriNetUnfolderBase]: For 122553/136782 co-relation queries the response was YES. [2024-01-31 17:34:01,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140456 conditions, 37231 events. 24679/37231 cut-off events. For 122553/136782 co-relation queries the response was YES. Maximal size of possible extension queue 2359. Compared 292750 event pairs, 1749 based on Foata normal form. 1386/37201 useless extension candidates. Maximal degree in co-relation 140428. Up to 14216 conditions per place. [2024-01-31 17:34:01,229 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 75 selfloop transitions, 18 changer transitions 14/148 dead transitions. [2024-01-31 17:34:01,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 148 transitions, 1320 flow [2024-01-31 17:34:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:34:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:34:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-01-31 17:34:01,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6873315363881402 [2024-01-31 17:34:01,231 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 791 flow. Second operand 7 states and 255 transitions. [2024-01-31 17:34:01,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 148 transitions, 1320 flow [2024-01-31 17:34:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 1244 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-01-31 17:34:02,044 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 729 flow [2024-01-31 17:34:02,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-01-31 17:34:02,045 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 37 predicate places. [2024-01-31 17:34:02,045 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 729 flow [2024-01-31 17:34:02,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 17:34:02,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:02,045 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, 1, 1, 1, 1, 1] [2024-01-31 17:34:02,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:34:02,046 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:02,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1249928825, now seen corresponding path program 1 times [2024-01-31 17:34:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:02,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740550003] [2024-01-31 17:34:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740550003] [2024-01-31 17:34:02,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740550003] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:02,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:02,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:34:02,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140527251] [2024-01-31 17:34:02,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:02,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:34:02,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:02,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:34:02,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:34:02,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:34:02,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 729 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 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 17:34:02,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:02,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:34:02,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:04,999 INFO L124 PetriNetUnfolderBase]: 16927/31722 cut-off events. [2024-01-31 17:34:04,999 INFO L125 PetriNetUnfolderBase]: For 83972/92644 co-relation queries the response was YES. [2024-01-31 17:34:05,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103745 conditions, 31722 events. 16927/31722 cut-off events. For 83972/92644 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 328426 event pairs, 5377 based on Foata normal form. 332/27913 useless extension candidates. Maximal degree in co-relation 103720. Up to 11830 conditions per place. [2024-01-31 17:34:05,191 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 52 selfloop transitions, 5 changer transitions 12/123 dead transitions. [2024-01-31 17:34:05,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 1009 flow [2024-01-31 17:34:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:34:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:34:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-01-31 17:34:05,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-01-31 17:34:05,193 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 729 flow. Second operand 6 states and 192 transitions. [2024-01-31 17:34:05,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 1009 flow [2024-01-31 17:34:06,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 123 transitions, 910 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-01-31 17:34:06,506 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 679 flow [2024-01-31 17:34:06,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-01-31 17:34:06,506 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 38 predicate places. [2024-01-31 17:34:06,507 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 679 flow [2024-01-31 17:34:06,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 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 17:34:06,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:06,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:06,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 17:34:06,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:06,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1601709701, now seen corresponding path program 2 times [2024-01-31 17:34:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:06,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558945426] [2024-01-31 17:34:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:06,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:07,424 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 17:34:07,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:07,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558945426] [2024-01-31 17:34:07,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558945426] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:07,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:07,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:34:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751778417] [2024-01-31 17:34:07,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:07,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:34:07,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:34:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:34:07,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-01-31 17:34:07,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 17:34:07,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:07,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-01-31 17:34:07,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand