./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/fib_unsafe-10.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 89d9c43e2f37f1bac8114d01260f8a993f33530b50231d4afed1f3cf3859d385 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:03:52,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:03:52,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:03:52,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:03:52,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:03:52,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:03:52,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:03:52,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:03:52,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:03:52,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:03:52,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:03:52,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:03:52,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:03:52,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:03:52,257 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:03:52,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:03:52,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:03:52,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:03:52,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:03:52,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:03:52,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:03:52,260 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:03:52,260 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:03:52,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:03:52,261 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:03:52,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:03:52,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:03:52,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:03:52,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:03:52,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:03:52,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:03:52,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:03:52,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:03:52,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:03:52,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:03:52,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:03:52,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:03:52,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:03:52,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:03:52,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:03:52,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:03:52,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:03:52,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89d9c43e2f37f1bac8114d01260f8a993f33530b50231d4afed1f3cf3859d385 [2024-11-17 03:03:52,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:03:52,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:03:52,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:03:52,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:03:52,479 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:03:52,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-10.i [2024-11-17 03:03:53,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:03:53,873 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:03:53,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-10.i [2024-11-17 03:03:53,887 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a957bdc/0b0508fb69b54af9b24b41e16c8a71a3/FLAG2d66813bd [2024-11-17 03:03:53,900 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a957bdc/0b0508fb69b54af9b24b41e16c8a71a3 [2024-11-17 03:03:53,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:03:53,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:03:53,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:03:53,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:03:53,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:03:53,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:53" (1/1) ... [2024-11-17 03:03:53,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e867a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:53, skipping insertion in model container [2024-11-17 03:03:53,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:53" (1/1) ... [2024-11-17 03:03:53,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:03:54,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:03:54,258 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:03:54,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:03:54,326 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:03:54,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54 WrapperNode [2024-11-17 03:03:54,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:03:54,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:03:54,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:03:54,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:03:54,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,359 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-17 03:03:54,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:03:54,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:03:54,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:03:54,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:03:54,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,379 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 03:03:54,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,382 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,384 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:03:54,389 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:03:54,389 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:03:54,389 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:03:54,390 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (1/1) ... [2024-11-17 03:03:54,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:03:54,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:03:54,417 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) [2024-11-17 03:03:54,424 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 [2024-11-17 03:03:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 03:03:54,459 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 03:03:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 03:03:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 03:03:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:03:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:03:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:03:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:03:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:03:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:03:54,462 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:03:54,583 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:03:54,586 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:03:54,725 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:03:54,725 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:03:54,805 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:03:54,805 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:03:54,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:03:54 BoogieIcfgContainer [2024-11-17 03:03:54,806 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:03:54,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:03:54,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:03:54,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:03:54,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:03:53" (1/3) ... [2024-11-17 03:03:54,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af8b89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:03:54, skipping insertion in model container [2024-11-17 03:03:54,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:54" (2/3) ... [2024-11-17 03:03:54,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af8b89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:03:54, skipping insertion in model container [2024-11-17 03:03:54,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:03:54" (3/3) ... [2024-11-17 03:03:54,813 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-10.i [2024-11-17 03:03:54,825 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:03:54,826 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:03:54,826 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:03:54,857 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:03:54,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 43 transitions, 94 flow [2024-11-17 03:03:54,907 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-11-17 03:03:54,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:03:54,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 8/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-17 03:03:54,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 43 transitions, 94 flow [2024-11-17 03:03:54,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 88 flow [2024-11-17 03:03:54,918 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:03:54,923 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;@59b0e856, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:03:54,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:03:54,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:03:54,932 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-17 03:03:54,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:03:54,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:03:54,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:03:54,935 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:03:54,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:03:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1705527034, now seen corresponding path program 1 times [2024-11-17 03:03:54,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:03:54,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794345907] [2024-11-17 03:03:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:03:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:55,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:03:55,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794345907] [2024-11-17 03:03:55,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794345907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:03:55,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:03:55,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:03:55,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465617512] [2024-11-17 03:03:55,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:03:55,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:03:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:03:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:03:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:03:55,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-17 03:03:55,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:55,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:03:55,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-17 03:03:55,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:03:55,280 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-17 03:03:55,283 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:03:55,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 519 events. 265/519 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2572 event pairs, 183 based on Foata normal form. 114/597 useless extension candidates. Maximal degree in co-relation 922. Up to 406 conditions per place. [2024-11-17 03:03:55,292 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 22 selfloop transitions, 0 changer transitions 1/35 dead transitions. [2024-11-17 03:03:55,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 122 flow [2024-11-17 03:03:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:03:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:03:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-17 03:03:55,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-17 03:03:55,304 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 2 states and 56 transitions. [2024-11-17 03:03:55,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 122 flow [2024-11-17 03:03:55,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:03:55,307 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 72 flow [2024-11-17 03:03:55,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-17 03:03:55,310 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-17 03:03:55,310 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 72 flow [2024-11-17 03:03:55,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:55,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:03:55,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:03:55,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:03:55,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:03:55,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:03:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash 869894088, now seen corresponding path program 1 times [2024-11-17 03:03:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:03:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425242981] [2024-11-17 03:03:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:03:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:03:55,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425242981] [2024-11-17 03:03:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425242981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:03:55,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:03:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:03:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417274235] [2024-11-17 03:03:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:03:55,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:03:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:03:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:03:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:03:55,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:03:55,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:55,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:03:55,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:03:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:03:55,521 INFO L124 PetriNetUnfolderBase]: 297/567 cut-off events. [2024-11-17 03:03:55,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:03:55,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 567 events. 297/567 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2757 event pairs, 39 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 1030. Up to 353 conditions per place. [2024-11-17 03:03:55,527 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 30 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-17 03:03:55,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 154 flow [2024-11-17 03:03:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:03:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:03:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-17 03:03:55,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-17 03:03:55,529 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 72 flow. Second operand 3 states and 72 transitions. [2024-11-17 03:03:55,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 154 flow [2024-11-17 03:03:55,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:03:55,531 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 84 flow [2024-11-17 03:03:55,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-17 03:03:55,532 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-17 03:03:55,532 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 84 flow [2024-11-17 03:03:55,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:55,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:03:55,533 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:03:55,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:03:55,533 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:03:55,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:03:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash -584403430, now seen corresponding path program 1 times [2024-11-17 03:03:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:03:55,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702315938] [2024-11-17 03:03:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:55,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:03:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:03:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702315938] [2024-11-17 03:03:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702315938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:03:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580678193] [2024-11-17 03:03:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:55,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:03:55,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:03:55,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:03:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:55,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:03:55,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:03:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:03:55,750 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:03:55,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580678193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:03:55,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:03:55,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 03:03:55,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53628121] [2024-11-17 03:03:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:03:55,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:03:55,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:03:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:03:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:03:55,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:03:55,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:55,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:03:55,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:03:55,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:03:55,825 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-17 03:03:55,825 INFO L125 PetriNetUnfolderBase]: For 32/40 co-relation queries the response was YES. [2024-11-17 03:03:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 519 events. 265/519 cut-off events. For 32/40 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2529 event pairs, 183 based on Foata normal form. 16/491 useless extension candidates. Maximal degree in co-relation 987. Up to 405 conditions per place. [2024-11-17 03:03:55,827 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 21 selfloop transitions, 1 changer transitions 1/34 dead transitions. [2024-11-17 03:03:55,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 128 flow [2024-11-17 03:03:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:03:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:03:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-17 03:03:55,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-17 03:03:55,830 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 84 flow. Second operand 3 states and 62 transitions. [2024-11-17 03:03:55,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 128 flow [2024-11-17 03:03:55,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:03:55,832 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 80 flow [2024-11-17 03:03:55,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-17 03:03:55,834 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-17 03:03:55,834 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 80 flow [2024-11-17 03:03:55,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:55,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:03:55,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:03:55,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:03:56,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:56,036 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:03:56,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:03:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash -584402535, now seen corresponding path program 1 times [2024-11-17 03:03:56,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:03:56,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464019766] [2024-11-17 03:03:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:03:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:03:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464019766] [2024-11-17 03:03:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464019766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:03:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696502617] [2024-11-17 03:03:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:56,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:56,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:03:56,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:03:56,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:03:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:56,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:03:56,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:03:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:56,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:03:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:56,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696502617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:03:56,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:03:56,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-17 03:03:56,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478951272] [2024-11-17 03:03:56,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:03:56,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:03:56,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:03:56,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:03:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:03:56,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:03:56,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 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) [2024-11-17 03:03:56,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:03:56,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:03:56,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:03:56,323 INFO L124 PetriNetUnfolderBase]: 361/695 cut-off events. [2024-11-17 03:03:56,323 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-17 03:03:56,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 695 events. 361/695 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3359 event pairs, 39 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1352. Up to 305 conditions per place. [2024-11-17 03:03:56,327 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-17 03:03:56,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 272 flow [2024-11-17 03:03:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:03:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:03:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-17 03:03:56,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387596899224806 [2024-11-17 03:03:56,328 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 80 flow. Second operand 6 states and 139 transitions. [2024-11-17 03:03:56,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 272 flow [2024-11-17 03:03:56,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:03:56,330 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 115 flow [2024-11-17 03:03:56,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-17 03:03:56,330 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-17 03:03:56,331 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 115 flow [2024-11-17 03:03:56,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 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) [2024-11-17 03:03:56,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:03:56,331 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:03:56,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:03:56,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-17 03:03:56,537 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:03:56,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:03:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1788020337, now seen corresponding path program 2 times [2024-11-17 03:03:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:03:56,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219095751] [2024-11-17 03:03:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:03:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:03:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219095751] [2024-11-17 03:03:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219095751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:03:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443545435] [2024-11-17 03:03:56,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:03:56,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:56,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:03:56,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:03:56,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:03:56,672 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:03:56,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:03:56,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:03:56,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:03:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:56,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:03:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:56,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443545435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:03:56,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:03:56,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-17 03:03:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595167087] [2024-11-17 03:03:56,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:03:56,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:03:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:03:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:03:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:03:56,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:03:56,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 115 flow. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:56,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:03:56,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:03:56,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:03:56,946 INFO L124 PetriNetUnfolderBase]: 553/1079 cut-off events. [2024-11-17 03:03:56,946 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-17 03:03:56,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 1079 events. 553/1079 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5302 event pairs, 39 based on Foata normal form. 96/1155 useless extension candidates. Maximal degree in co-relation 2393. Up to 305 conditions per place. [2024-11-17 03:03:56,952 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 101 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2024-11-17 03:03:56,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 535 flow [2024-11-17 03:03:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:03:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:03:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-11-17 03:03:56,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-11-17 03:03:56,954 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 115 flow. Second operand 12 states and 274 transitions. [2024-11-17 03:03:56,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 535 flow [2024-11-17 03:03:56,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 527 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:03:56,961 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 191 flow [2024-11-17 03:03:56,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2024-11-17 03:03:56,962 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-17 03:03:56,962 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 191 flow [2024-11-17 03:03:56,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:56,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:03:56,962 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:03:56,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:03:57,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:57,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:03:57,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:03:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash -406525957, now seen corresponding path program 3 times [2024-11-17 03:03:57,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:03:57,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306940232] [2024-11-17 03:03:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:03:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:03:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306940232] [2024-11-17 03:03:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306940232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:03:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407012067] [2024-11-17 03:03:57,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:03:57,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:57,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:03:57,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:03:57,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:03:57,392 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-17 03:03:57,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:03:57,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:03:57,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:03:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:57,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:03:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:57,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407012067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:03:57,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:03:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-17 03:03:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520528237] [2024-11-17 03:03:57,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:03:57,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:03:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:03:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:03:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:03:57,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:03:57,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 191 flow. Second operand has 25 states, 25 states have (on average 14.48) internal successors, (362), 25 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:57,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:03:57,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:03:57,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:03:58,004 INFO L124 PetriNetUnfolderBase]: 937/1847 cut-off events. [2024-11-17 03:03:58,005 INFO L125 PetriNetUnfolderBase]: For 13968/13968 co-relation queries the response was YES. [2024-11-17 03:03:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 1847 events. 937/1847 cut-off events. For 13968/13968 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9298 event pairs, 39 based on Foata normal form. 192/2019 useless extension candidates. Maximal degree in co-relation 4633. Up to 384 conditions per place. [2024-11-17 03:03:58,014 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 197 selfloop transitions, 23 changer transitions 0/230 dead transitions. [2024-11-17 03:03:58,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 230 transitions, 1079 flow [2024-11-17 03:03:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:03:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:03:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 544 transitions. [2024-11-17 03:03:58,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-11-17 03:03:58,017 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 191 flow. Second operand 24 states and 544 transitions. [2024-11-17 03:03:58,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 230 transitions, 1079 flow [2024-11-17 03:03:58,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 230 transitions, 1019 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-17 03:03:58,025 INFO L231 Difference]: Finished difference. Result has 92 places, 54 transitions, 323 flow [2024-11-17 03:03:58,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=323, PETRI_PLACES=92, PETRI_TRANSITIONS=54} [2024-11-17 03:03:58,025 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-11-17 03:03:58,025 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 54 transitions, 323 flow [2024-11-17 03:03:58,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.48) internal successors, (362), 25 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:03:58,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:03:58,026 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:03:58,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:03:58,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:58,227 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:03:58,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:03:58,227 INFO L85 PathProgramCache]: Analyzing trace with hash 138215123, now seen corresponding path program 4 times [2024-11-17 03:03:58,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:03:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001115667] [2024-11-17 03:03:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:03:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:03:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:03:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:03:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:03:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001115667] [2024-11-17 03:03:59,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001115667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:03:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239153299] [2024-11-17 03:03:59,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:03:59,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:03:59,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:03:59,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:03:59,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:03:59,735 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:03:59,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:03:59,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-17 03:03:59,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 420 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:01,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239153299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:02,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 83 [2024-11-17 03:04:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477272784] [2024-11-17 03:04:02,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:02,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-17 03:04:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-17 03:04:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1032, Invalid=5940, Unknown=0, NotChecked=0, Total=6972 [2024-11-17 03:04:02,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:02,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 54 transitions, 323 flow. Second operand has 84 states, 84 states have (on average 14.202380952380953) internal successors, (1193), 84 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:04:02,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:02,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:02,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:36,935 INFO L124 PetriNetUnfolderBase]: 31762/63287 cut-off events. [2024-11-17 03:04:36,935 INFO L125 PetriNetUnfolderBase]: For 112613/113049 co-relation queries the response was YES. [2024-11-17 03:04:37,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154558 conditions, 63287 events. 31762/63287 cut-off events. For 112613/113049 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 582023 event pairs, 453 based on Foata normal form. 0/58275 useless extension candidates. Maximal degree in co-relation 154531. Up to 12162 conditions per place. [2024-11-17 03:04:37,323 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 868 selfloop transitions, 1255 changer transitions 1053/3186 dead transitions. [2024-11-17 03:04:37,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 3186 transitions, 20730 flow [2024-11-17 03:04:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2024-11-17 03:04:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2024-11-17 03:04:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 5626 transitions. [2024-11-17 03:04:37,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4974798832788045 [2024-11-17 03:04:37,336 INFO L175 Difference]: Start difference. First operand has 92 places, 54 transitions, 323 flow. Second operand 263 states and 5626 transitions. [2024-11-17 03:04:37,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 3186 transitions, 20730 flow [2024-11-17 03:04:37,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 3186 transitions, 17268 flow, removed 1250 selfloop flow, removed 11 redundant places. [2024-11-17 03:04:37,532 INFO L231 Difference]: Finished difference. Result has 445 places, 1393 transitions, 10347 flow [2024-11-17 03:04:37,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=263, PETRI_FLOW=10347, PETRI_PLACES=445, PETRI_TRANSITIONS=1393} [2024-11-17 03:04:37,533 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 405 predicate places. [2024-11-17 03:04:37,534 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 1393 transitions, 10347 flow [2024-11-17 03:04:37,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 14.202380952380953) internal successors, (1193), 84 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:04:37,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:37,535 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:37,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 03:04:37,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:37,740 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:37,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash -344520170, now seen corresponding path program 1 times [2024-11-17 03:04:37,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:37,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346987900] [2024-11-17 03:04:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 0 proven. 509 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:39,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:39,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346987900] [2024-11-17 03:04:39,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346987900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:39,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686284275] [2024-11-17 03:04:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:39,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:39,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:04:39,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:04:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:39,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-17 03:04:39,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 420 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:40,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 0 proven. 509 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:41,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686284275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:41,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:41,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 89 [2024-11-17 03:04:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848495700] [2024-11-17 03:04:41,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:41,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-17 03:04:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:41,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-17 03:04:41,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1084, Invalid=6926, Unknown=0, NotChecked=0, Total=8010 [2024-11-17 03:04:41,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:41,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 1393 transitions, 10347 flow. Second operand has 90 states, 90 states have (on average 14.244444444444444) internal successors, (1282), 90 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:04:41,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:41,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:41,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand