./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix053.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/mix053.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:52:25,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:52:25,824 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:52:25,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:52:25,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:52:25,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:52:25,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:52:25,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:52:25,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:52:25,851 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:52:25,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:52:25,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:52:25,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:52:25,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:52:25,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:52:25,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:52:25,853 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:52:25,853 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:52:25,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:52:25,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:52:25,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:52:25,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:52:25,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:52:25,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:52:25,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:52:25,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:52:25,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:52:25,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:52:25,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:52:25,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:52:25,855 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 [2025-03-04 09:52:26,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:52:26,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:52:26,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:52:26,077 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:52:26,077 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:52:26,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix053.opt.i [2025-03-04 09:52:27,204 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caaa2720/1e656f15c8dd49a9b388596606d02415/FLAG68a0d5c51 [2025-03-04 09:52:27,439 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:52:27,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix053.opt.i [2025-03-04 09:52:27,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caaa2720/1e656f15c8dd49a9b388596606d02415/FLAG68a0d5c51 [2025-03-04 09:52:27,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caaa2720/1e656f15c8dd49a9b388596606d02415 [2025-03-04 09:52:27,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:52:27,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:52:27,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:52:27,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:52:27,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:52:27,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:52:27" (1/1) ... [2025-03-04 09:52:27,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41746ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:27, skipping insertion in model container [2025-03-04 09:52:27,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:52:27" (1/1) ... [2025-03-04 09:52:27,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:52:28,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:52:28,025 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:52:28,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:52:28,096 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:52:28,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28 WrapperNode [2025-03-04 09:52:28,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:52:28,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:52:28,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:52:28,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:52:28,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,141 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 130 [2025-03-04 09:52:28,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:52:28,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:52:28,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:52:28,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:52:28,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,170 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 09:52:28,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,175 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:52:28,180 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:52:28,180 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:52:28,180 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:52:28,183 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (1/1) ... [2025-03-04 09:52:28,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:52:28,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:52:28,206 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) [2025-03-04 09:52:28,208 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 [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 09:52:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 09:52:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 09:52:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-04 09:52:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:52:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:52:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:52:28,226 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:52:28,315 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:52:28,317 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:52:28,538 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:52:28,538 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:52:28,717 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:52:28,718 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:52:28,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:52:28 BoogieIcfgContainer [2025-03-04 09:52:28,718 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:52:28,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:52:28,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:52:28,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:52:28,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:52:27" (1/3) ... [2025-03-04 09:52:28,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edea3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:52:28, skipping insertion in model container [2025-03-04 09:52:28,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:52:28" (2/3) ... [2025-03-04 09:52:28,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edea3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:52:28, skipping insertion in model container [2025-03-04 09:52:28,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:52:28" (3/3) ... [2025-03-04 09:52:28,725 INFO L128 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2025-03-04 09:52:28,736 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:52:28,739 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix053.opt.i that has 5 procedures, 52 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-03-04 09:52:28,739 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:52:28,784 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:52:28,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 53 transitions, 122 flow [2025-03-04 09:52:28,835 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2025-03-04 09:52:28,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:52:28,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 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. [2025-03-04 09:52:28,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 53 transitions, 122 flow [2025-03-04 09:52:28,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 49 transitions, 110 flow [2025-03-04 09:52:28,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:52:28,861 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@e110fd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:52:28,862 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-04 09:52:28,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:52:28,871 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-04 09:52:28,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:52:28,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:52:28,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:52:28,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:52:28,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:52:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2017971024, now seen corresponding path program 1 times [2025-03-04 09:52:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:52:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747011906] [2025-03-04 09:52:28,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:52:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:52:28,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:52:28,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:52:28,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:52:28,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:52:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:52:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:52:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747011906] [2025-03-04 09:52:29,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747011906] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:52:29,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:52:29,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:52:29,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101205237] [2025-03-04 09:52:29,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:52:29,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:52:29,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:52:29,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:52:29,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:52:29,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2025-03-04 09:52:29,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:29,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:52:29,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2025-03-04 09:52:29,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:52:32,652 INFO L124 PetriNetUnfolderBase]: 43115/57503 cut-off events. [2025-03-04 09:52:32,652 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2025-03-04 09:52:32,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114619 conditions, 57503 events. 43115/57503 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 1722. Compared 338117 event pairs, 6395 based on Foata normal form. 2592/60060 useless extension candidates. Maximal degree in co-relation 114607. Up to 47521 conditions per place. [2025-03-04 09:52:32,991 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 57 selfloop transitions, 2 changer transitions 2/69 dead transitions. [2025-03-04 09:52:32,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 272 flow [2025-03-04 09:52:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:52:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:52:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-03-04 09:52:33,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2025-03-04 09:52:33,003 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 110 flow. Second operand 3 states and 102 transitions. [2025-03-04 09:52:33,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 272 flow [2025-03-04 09:52:33,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 09:52:33,013 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 100 flow [2025-03-04 09:52:33,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2025-03-04 09:52:33,017 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2025-03-04 09:52:33,017 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 100 flow [2025-03-04 09:52:33,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:33,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:52:33,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:52:33,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:52:33,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:52:33,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:52:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash -210426391, now seen corresponding path program 1 times [2025-03-04 09:52:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:52:33,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664646560] [2025-03-04 09:52:33,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:52:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:52:33,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:52:33,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:52:33,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:52:33,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:52:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:52:33,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:52:33,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664646560] [2025-03-04 09:52:33,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664646560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:52:33,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:52:33,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:52:33,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444214680] [2025-03-04 09:52:33,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:52:33,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:52:33,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:52:33,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:52:33,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:52:33,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2025-03-04 09:52:33,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:33,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:52:33,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2025-03-04 09:52:33,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:52:35,713 INFO L124 PetriNetUnfolderBase]: 38795/54911 cut-off events. [2025-03-04 09:52:35,714 INFO L125 PetriNetUnfolderBase]: For 1944/1944 co-relation queries the response was YES. [2025-03-04 09:52:35,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108353 conditions, 54911 events. 38795/54911 cut-off events. For 1944/1944 co-relation queries the response was YES. Maximal size of possible extension queue 1736. Compared 360446 event pairs, 38795 based on Foata normal form. 1296/56172 useless extension candidates. Maximal degree in co-relation 108343. Up to 50976 conditions per place. [2025-03-04 09:52:35,990 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 34 selfloop transitions, 1 changer transitions 1/43 dead transitions. [2025-03-04 09:52:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 43 transitions, 170 flow [2025-03-04 09:52:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:52:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:52:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-04 09:52:35,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2025-03-04 09:52:35,991 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 100 flow. Second operand 3 states and 70 transitions. [2025-03-04 09:52:35,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 43 transitions, 170 flow [2025-03-04 09:52:36,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:52:36,004 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 94 flow [2025-03-04 09:52:36,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-04 09:52:36,005 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -6 predicate places. [2025-03-04 09:52:36,005 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 94 flow [2025-03-04 09:52:36,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:36,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:52:36,006 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:52:36,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:52:36,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:52:36,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:52:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash -210425778, now seen corresponding path program 1 times [2025-03-04 09:52:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:52:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457357] [2025-03-04 09:52:36,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:52:36,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:52:36,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:52:36,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:52:36,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:52:36,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:52:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:52:36,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:52:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457357] [2025-03-04 09:52:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:52:36,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:52:36,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:52:36,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965628823] [2025-03-04 09:52:36,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:52:36,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:52:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:52:36,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:52:36,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:52:36,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2025-03-04 09:52:36,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:36,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:52:36,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2025-03-04 09:52:36,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:52:42,463 INFO L124 PetriNetUnfolderBase]: 91987/124067 cut-off events. [2025-03-04 09:52:42,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:52:42,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246421 conditions, 124067 events. 91987/124067 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3805. Compared 816822 event pairs, 22485 based on Foata normal form. 0/121645 useless extension candidates. Maximal degree in co-relation 246415. Up to 45219 conditions per place. [2025-03-04 09:52:42,948 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 58 selfloop transitions, 7 changer transitions 127/198 dead transitions. [2025-03-04 09:52:42,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 198 transitions, 794 flow [2025-03-04 09:52:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:52:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:52:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 293 transitions. [2025-03-04 09:52:42,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142557651991615 [2025-03-04 09:52:42,951 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 94 flow. Second operand 9 states and 293 transitions. [2025-03-04 09:52:42,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 198 transitions, 794 flow [2025-03-04 09:52:42,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 198 transitions, 793 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:52:42,955 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 189 flow [2025-03-04 09:52:42,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2025-03-04 09:52:42,956 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2025-03-04 09:52:42,956 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 189 flow [2025-03-04 09:52:42,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:42,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:52:42,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:52:42,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:52:42,957 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:52:42,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:52:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2120733331, now seen corresponding path program 1 times [2025-03-04 09:52:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:52:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555400502] [2025-03-04 09:52:42,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:52:42,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:52:42,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:52:42,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:52:42,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:52:42,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:52:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:52:43,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:52:43,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555400502] [2025-03-04 09:52:43,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555400502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:52:43,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:52:43,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:52:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348031354] [2025-03-04 09:52:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:52:43,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:52:43,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:52:43,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:52:43,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:52:43,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2025-03-04 09:52:43,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:43,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:52:43,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2025-03-04 09:52:43,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:52:48,927 INFO L124 PetriNetUnfolderBase]: 72605/100999 cut-off events. [2025-03-04 09:52:48,927 INFO L125 PetriNetUnfolderBase]: For 115445/115448 co-relation queries the response was YES. [2025-03-04 09:52:49,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275512 conditions, 100999 events. 72605/100999 cut-off events. For 115445/115448 co-relation queries the response was YES. Maximal size of possible extension queue 3149. Compared 703301 event pairs, 18429 based on Foata normal form. 2280/103274 useless extension candidates. Maximal degree in co-relation 275497. Up to 77449 conditions per place. [2025-03-04 09:52:49,589 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 5 changer transitions 89/162 dead transitions. [2025-03-04 09:52:49,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 162 transitions, 1053 flow [2025-03-04 09:52:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:52:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:52:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2025-03-04 09:52:49,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5498652291105122 [2025-03-04 09:52:49,590 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 189 flow. Second operand 7 states and 204 transitions. [2025-03-04 09:52:49,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 162 transitions, 1053 flow [2025-03-04 09:52:50,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 162 transitions, 923 flow, removed 31 selfloop flow, removed 4 redundant places. [2025-03-04 09:52:50,333 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 236 flow [2025-03-04 09:52:50,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2025-03-04 09:52:50,333 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2025-03-04 09:52:50,333 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 236 flow [2025-03-04 09:52:50,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:50,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:52:50,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:52:50,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:52:50,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:52:50,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:52:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash -918903635, now seen corresponding path program 1 times [2025-03-04 09:52:50,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:52:50,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277887999] [2025-03-04 09:52:50,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:52:50,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:52:50,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:52:50,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:52:50,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:52:50,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:52:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:52:50,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:52:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277887999] [2025-03-04 09:52:50,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277887999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:52:50,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:52:50,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:52:50,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416856099] [2025-03-04 09:52:50,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:52:50,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:52:50,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:52:50,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:52:50,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:52:50,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2025-03-04 09:52:50,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:50,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:52:50,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2025-03-04 09:52:50,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:52:56,558 INFO L124 PetriNetUnfolderBase]: 69121/96011 cut-off events. [2025-03-04 09:52:56,559 INFO L125 PetriNetUnfolderBase]: For 163524/163529 co-relation queries the response was YES. [2025-03-04 09:52:56,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269925 conditions, 96011 events. 69121/96011 cut-off events. For 163524/163529 co-relation queries the response was YES. Maximal size of possible extension queue 2872. Compared 645909 event pairs, 35003 based on Foata normal form. 1984/97991 useless extension candidates. Maximal degree in co-relation 269907. Up to 75801 conditions per place. [2025-03-04 09:52:57,354 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 67 selfloop transitions, 5 changer transitions 75/153 dead transitions. [2025-03-04 09:52:57,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 153 transitions, 948 flow [2025-03-04 09:52:57,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:52:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:52:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2025-03-04 09:52:57,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5444743935309974 [2025-03-04 09:52:57,355 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 236 flow. Second operand 7 states and 202 transitions. [2025-03-04 09:52:57,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 153 transitions, 948 flow [2025-03-04 09:52:58,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 153 transitions, 933 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-04 09:52:58,719 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 292 flow [2025-03-04 09:52:58,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2025-03-04 09:52:58,719 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2025-03-04 09:52:58,719 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 292 flow [2025-03-04 09:52:58,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:58,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:52:58,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:52:58,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:52:58,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:52:58,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:52:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1521540620, now seen corresponding path program 1 times [2025-03-04 09:52:58,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:52:58,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643965599] [2025-03-04 09:52:58,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:52:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:52:58,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 09:52:58,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 09:52:58,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:52:58,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:52:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:52:58,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:52:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643965599] [2025-03-04 09:52:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643965599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:52:58,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:52:58,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:52:58,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088712898] [2025-03-04 09:52:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:52:58,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:52:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:52:58,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:52:58,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:52:58,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2025-03-04 09:52:58,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:52:58,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:52:58,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2025-03-04 09:52:58,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand