./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/weaver/mult-dist.wvr.c -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 c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:14:55,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:14:55,519 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:14:55,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:14:55,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:14:55,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:14:55,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:14:55,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:14:55,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:14:55,565 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:14:55,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:14:55,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:14:55,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:14:55,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:14:55,567 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:14:55,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:14:55,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:14:55,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:14:55,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:14:55,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:14:55,569 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:14:55,571 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:14:55,571 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:14:55,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:14:55,572 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:14:55,572 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:14:55,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:14:55,572 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:14:55,572 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:14:55,572 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:14:55,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:14:55,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:14:55,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:14:55,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:14:55,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:14:55,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:14:55,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:14:55,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:14:55,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:14:55,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:14:55,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:14:55,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:14:55,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2024-11-10 18:14:55,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:14:55,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:14:55,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:14:55,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:14:55,856 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:14:55,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-10 18:14:57,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:14:57,523 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:14:57,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-10 18:14:57,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b244d7/75d026d2f6324917973fbce9a9b540b3/FLAGb9253f71c [2024-11-10 18:14:57,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4b244d7/75d026d2f6324917973fbce9a9b540b3 [2024-11-10 18:14:57,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:14:57,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:14:57,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:14:57,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:14:57,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:14:57,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:14:57" (1/1) ... [2024-11-10 18:14:57,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d7ee4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:57, skipping insertion in model container [2024-11-10 18:14:57,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:14:57" (1/1) ... [2024-11-10 18:14:57,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:14:58,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:14:58,159 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:14:58,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:14:58,193 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:14:58,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58 WrapperNode [2024-11-10 18:14:58,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:14:58,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:14:58,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:14:58,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:14:58,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,228 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-10 18:14:58,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:14:58,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:14:58,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:14:58,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:14:58,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,253 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]. [2024-11-10 18:14:58,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,257 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:14:58,263 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:14:58,263 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:14:58,263 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:14:58,264 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:14:58,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:14:58,315 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) [2024-11-10 18:14:58,322 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 [2024-11-10 18:14:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:14:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:14:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:14:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:14:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:14:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 18:14:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 18:14:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:14:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:14:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:14:58,378 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:14:58,544 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:14:58,547 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:14:58,777 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:14:58,777 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:14:58,878 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:14:58,879 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:14:58,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:14:58 BoogieIcfgContainer [2024-11-10 18:14:58,880 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:14:58,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:14:58,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:14:58,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:14:58,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:14:57" (1/3) ... [2024-11-10 18:14:58,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7398347c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:14:58, skipping insertion in model container [2024-11-10 18:14:58,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58" (2/3) ... [2024-11-10 18:14:58,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7398347c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:14:58, skipping insertion in model container [2024-11-10 18:14:58,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:14:58" (3/3) ... [2024-11-10 18:14:58,890 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-11-10 18:14:58,909 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:14:58,910 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:14:58,910 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:14:58,969 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 18:14:59,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 36 transitions, 93 flow [2024-11-10 18:14:59,030 INFO L124 PetriNetUnfolderBase]: 6/33 cut-off events. [2024-11-10 18:14:59,031 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:14:59,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 6/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-10 18:14:59,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 36 transitions, 93 flow [2024-11-10 18:14:59,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 82 flow [2024-11-10 18:14:59,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:14:59,065 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;@5d0d7eec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:14:59,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 18:14:59,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:14:59,079 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2024-11-10 18:14:59,079 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:14:59,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:14:59,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:14:59,082 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:14:59,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:14:59,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2124384933, now seen corresponding path program 1 times [2024-11-10 18:14:59,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:14:59,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956156733] [2024-11-10 18:14:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:14:59,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:14:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:14:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:14:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:14:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956156733] [2024-11-10 18:14:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956156733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:14:59,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:14:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:14:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048535047] [2024-11-10 18:14:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:14:59,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:14:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:14:59,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:14:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:14:59,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:14:59,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2024-11-10 18:14:59,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:14:59,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:14:59,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:14:59,451 INFO L124 PetriNetUnfolderBase]: 199/343 cut-off events. [2024-11-10 18:14:59,451 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-10 18:14:59,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 343 events. 199/343 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1261 event pairs, 124 based on Foata normal form. 76/401 useless extension candidates. Maximal degree in co-relation 584. Up to 293 conditions per place. [2024-11-10 18:14:59,458 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 20 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2024-11-10 18:14:59,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 112 flow [2024-11-10 18:14:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:14:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:14:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2024-11-10 18:14:59,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-10 18:14:59,473 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 82 flow. Second operand 2 states and 46 transitions. [2024-11-10 18:14:59,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 112 flow [2024-11-10 18:14:59,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 18:14:59,479 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 60 flow [2024-11-10 18:14:59,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-11-10 18:14:59,485 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2024-11-10 18:14:59,486 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 60 flow [2024-11-10 18:14:59,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2024-11-10 18:14:59,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:14:59,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:14:59,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:14:59,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:14:59,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:14:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1689686396, now seen corresponding path program 1 times [2024-11-10 18:14:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:14:59,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870141557] [2024-11-10 18:14:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:14:59,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:14:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:14:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:14:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:14:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870141557] [2024-11-10 18:14:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870141557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:14:59,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:14:59,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:14:59,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652370826] [2024-11-10 18:14:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:14:59,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:14:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:14:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:14:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:14:59,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:14:59,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-10 18:14:59,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:14:59,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:14:59,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:00,067 INFO L124 PetriNetUnfolderBase]: 386/687 cut-off events. [2024-11-10 18:15:00,067 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:15:00,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 687 events. 386/687 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3267 event pairs, 124 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 1274. Up to 349 conditions per place. [2024-11-10 18:15:00,074 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 32 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-11-10 18:15:00,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 173 flow [2024-11-10 18:15:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:15:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:15:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-10 18:15:00,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2024-11-10 18:15:00,076 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 60 flow. Second operand 3 states and 71 transitions. [2024-11-10 18:15:00,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 173 flow [2024-11-10 18:15:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:00,079 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 86 flow [2024-11-10 18:15:00,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-10 18:15:00,080 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-11-10 18:15:00,080 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 86 flow [2024-11-10 18:15:00,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-10 18:15:00,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:00,080 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:00,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:15:00,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:00,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash -449174043, now seen corresponding path program 1 times [2024-11-10 18:15:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270713354] [2024-11-10 18:15:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270713354] [2024-11-10 18:15:00,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270713354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:00,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:00,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:15:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128353454] [2024-11-10 18:15:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:00,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:15:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:15:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:15:00,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:00,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:00,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:00,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:00,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:00,886 INFO L124 PetriNetUnfolderBase]: 1374/2048 cut-off events. [2024-11-10 18:15:00,887 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2024-11-10 18:15:00,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4653 conditions, 2048 events. 1374/2048 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9828 event pairs, 350 based on Foata normal form. 20/2044 useless extension candidates. Maximal degree in co-relation 4648. Up to 1085 conditions per place. [2024-11-10 18:15:00,899 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 96 selfloop transitions, 41 changer transitions 10/151 dead transitions. [2024-11-10 18:15:00,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 151 transitions, 711 flow [2024-11-10 18:15:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 18:15:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 18:15:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 251 transitions. [2024-11-10 18:15:00,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.498015873015873 [2024-11-10 18:15:00,903 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 86 flow. Second operand 14 states and 251 transitions. [2024-11-10 18:15:00,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 151 transitions, 711 flow [2024-11-10 18:15:00,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 151 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:00,905 INFO L231 Difference]: Finished difference. Result has 54 places, 71 transitions, 387 flow [2024-11-10 18:15:00,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=387, PETRI_PLACES=54, PETRI_TRANSITIONS=71} [2024-11-10 18:15:00,906 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2024-11-10 18:15:00,906 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 71 transitions, 387 flow [2024-11-10 18:15:00,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:00,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:00,907 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:00,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:15:00,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:00,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash -672621165, now seen corresponding path program 2 times [2024-11-10 18:15:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:00,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958385258] [2024-11-10 18:15:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:01,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:01,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958385258] [2024-11-10 18:15:01,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958385258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:01,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:01,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:15:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581773020] [2024-11-10 18:15:01,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:01,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:15:01,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:15:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:15:01,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:01,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 71 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:01,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:01,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:01,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:01,677 INFO L124 PetriNetUnfolderBase]: 2173/3230 cut-off events. [2024-11-10 18:15:01,678 INFO L125 PetriNetUnfolderBase]: For 8779/8779 co-relation queries the response was YES. [2024-11-10 18:15:01,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11499 conditions, 3230 events. 2173/3230 cut-off events. For 8779/8779 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17400 event pairs, 591 based on Foata normal form. 14/3178 useless extension candidates. Maximal degree in co-relation 11484. Up to 1558 conditions per place. [2024-11-10 18:15:01,702 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 107 selfloop transitions, 65 changer transitions 12/188 dead transitions. [2024-11-10 18:15:01,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 188 transitions, 1432 flow [2024-11-10 18:15:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:15:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:15:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-11-10 18:15:01,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-11-10 18:15:01,708 INFO L175 Difference]: Start difference. First operand has 54 places, 71 transitions, 387 flow. Second operand 12 states and 213 transitions. [2024-11-10 18:15:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 188 transitions, 1432 flow [2024-11-10 18:15:01,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 188 transitions, 1432 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:01,746 INFO L231 Difference]: Finished difference. Result has 75 places, 130 transitions, 1085 flow [2024-11-10 18:15:01,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1085, PETRI_PLACES=75, PETRI_TRANSITIONS=130} [2024-11-10 18:15:01,747 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-11-10 18:15:01,748 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 130 transitions, 1085 flow [2024-11-10 18:15:01,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:01,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:01,748 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:01,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:15:01,749 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:01,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -216230423, now seen corresponding path program 3 times [2024-11-10 18:15:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229573191] [2024-11-10 18:15:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229573191] [2024-11-10 18:15:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229573191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090960696] [2024-11-10 18:15:01,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:15:01,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:01,945 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) [2024-11-10 18:15:01,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:15:02,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:15:02,017 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:02,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:15:02,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:02,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090960696] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-10 18:15:02,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795524220] [2024-11-10 18:15:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:02,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:15:02,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:15:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:15:02,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:02,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 130 transitions, 1085 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:02,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:02,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:02,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:03,388 INFO L124 PetriNetUnfolderBase]: 3005/4613 cut-off events. [2024-11-10 18:15:03,388 INFO L125 PetriNetUnfolderBase]: For 26406/26695 co-relation queries the response was YES. [2024-11-10 18:15:03,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21093 conditions, 4613 events. 3005/4613 cut-off events. For 26406/26695 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 27147 event pairs, 630 based on Foata normal form. 15/4480 useless extension candidates. Maximal degree in co-relation 21067. Up to 1381 conditions per place. [2024-11-10 18:15:03,436 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 196 selfloop transitions, 42 changer transitions 1/253 dead transitions. [2024-11-10 18:15:03,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 253 transitions, 2403 flow [2024-11-10 18:15:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-11-10 18:15:03,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.595679012345679 [2024-11-10 18:15:03,438 INFO L175 Difference]: Start difference. First operand has 75 places, 130 transitions, 1085 flow. Second operand 9 states and 193 transitions. [2024-11-10 18:15:03,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 253 transitions, 2403 flow [2024-11-10 18:15:03,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 253 transitions, 2187 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-11-10 18:15:03,613 INFO L231 Difference]: Finished difference. Result has 85 places, 151 transitions, 1289 flow [2024-11-10 18:15:03,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1289, PETRI_PLACES=85, PETRI_TRANSITIONS=151} [2024-11-10 18:15:03,616 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2024-11-10 18:15:03,618 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 151 transitions, 1289 flow [2024-11-10 18:15:03,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:03,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:03,619 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:03,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:15:03,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:03,824 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:03,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1794175417, now seen corresponding path program 4 times [2024-11-10 18:15:03,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:03,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212692125] [2024-11-10 18:15:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:03,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:03,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212692125] [2024-11-10 18:15:03,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212692125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:03,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:03,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:15:03,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366292302] [2024-11-10 18:15:03,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:03,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:15:03,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:15:04,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:15:04,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:04,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 151 transitions, 1289 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:04,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:04,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:04,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:04,863 INFO L124 PetriNetUnfolderBase]: 3594/5360 cut-off events. [2024-11-10 18:15:04,863 INFO L125 PetriNetUnfolderBase]: For 40668/40686 co-relation queries the response was YES. [2024-11-10 18:15:04,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26712 conditions, 5360 events. 3594/5360 cut-off events. For 40668/40686 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30699 event pairs, 887 based on Foata normal form. 36/5314 useless extension candidates. Maximal degree in co-relation 26683. Up to 2058 conditions per place. [2024-11-10 18:15:04,914 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 193 selfloop transitions, 79 changer transitions 22/298 dead transitions. [2024-11-10 18:15:04,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 298 transitions, 3092 flow [2024-11-10 18:15:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 18:15:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 18:15:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 235 transitions. [2024-11-10 18:15:04,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5021367521367521 [2024-11-10 18:15:04,916 INFO L175 Difference]: Start difference. First operand has 85 places, 151 transitions, 1289 flow. Second operand 13 states and 235 transitions. [2024-11-10 18:15:04,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 298 transitions, 3092 flow [2024-11-10 18:15:04,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 298 transitions, 3022 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:04,991 INFO L231 Difference]: Finished difference. Result has 108 places, 182 transitions, 1940 flow [2024-11-10 18:15:04,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1940, PETRI_PLACES=108, PETRI_TRANSITIONS=182} [2024-11-10 18:15:04,994 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2024-11-10 18:15:04,995 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 182 transitions, 1940 flow [2024-11-10 18:15:04,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:04,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:04,995 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:04,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:15:04,996 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:04,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -695098545, now seen corresponding path program 5 times [2024-11-10 18:15:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:04,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637145918] [2024-11-10 18:15:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637145918] [2024-11-10 18:15:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637145918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99382883] [2024-11-10 18:15:05,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 18:15:05,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:05,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:05,162 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) [2024-11-10 18:15:05,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:15:05,237 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:05,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:05,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:15:05,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:05,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:05,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99382883] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:05,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:05,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2024-11-10 18:15:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550189613] [2024-11-10 18:15:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:05,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:15:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:15:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:15:05,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:05,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 182 transitions, 1940 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:05,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:05,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:05,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:06,416 INFO L124 PetriNetUnfolderBase]: 3741/5820 cut-off events. [2024-11-10 18:15:06,416 INFO L125 PetriNetUnfolderBase]: For 69399/69766 co-relation queries the response was YES. [2024-11-10 18:15:06,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33332 conditions, 5820 events. 3741/5820 cut-off events. For 69399/69766 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 36029 event pairs, 738 based on Foata normal form. 16/5693 useless extension candidates. Maximal degree in co-relation 33291. Up to 1617 conditions per place. [2024-11-10 18:15:06,480 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 207 selfloop transitions, 66 changer transitions 0/292 dead transitions. [2024-11-10 18:15:06,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 292 transitions, 3499 flow [2024-11-10 18:15:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-11-10 18:15:06,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-10 18:15:06,482 INFO L175 Difference]: Start difference. First operand has 108 places, 182 transitions, 1940 flow. Second operand 9 states and 192 transitions. [2024-11-10 18:15:06,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 292 transitions, 3499 flow [2024-11-10 18:15:06,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 292 transitions, 3364 flow, removed 50 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:06,603 INFO L231 Difference]: Finished difference. Result has 121 places, 209 transitions, 2435 flow [2024-11-10 18:15:06,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2435, PETRI_PLACES=121, PETRI_TRANSITIONS=209} [2024-11-10 18:15:06,604 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 85 predicate places. [2024-11-10 18:15:06,604 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 209 transitions, 2435 flow [2024-11-10 18:15:06,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:06,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:06,605 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:06,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:06,805 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,SelfDestructingSolverStorable6 [2024-11-10 18:15:06,807 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:06,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash 88322829, now seen corresponding path program 6 times [2024-11-10 18:15:06,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:06,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360000256] [2024-11-10 18:15:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:06,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360000256] [2024-11-10 18:15:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360000256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:07,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:07,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:15:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497251470] [2024-11-10 18:15:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:07,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:15:07,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:15:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:15:07,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:07,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 209 transitions, 2435 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:07,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:07,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:07,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:08,296 INFO L124 PetriNetUnfolderBase]: 4251/6449 cut-off events. [2024-11-10 18:15:08,297 INFO L125 PetriNetUnfolderBase]: For 96098/96138 co-relation queries the response was YES. [2024-11-10 18:15:08,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39522 conditions, 6449 events. 4251/6449 cut-off events. For 96098/96138 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 38915 event pairs, 1381 based on Foata normal form. 54/6495 useless extension candidates. Maximal degree in co-relation 39475. Up to 3244 conditions per place. [2024-11-10 18:15:08,347 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 194 selfloop transitions, 128 changer transitions 14/340 dead transitions. [2024-11-10 18:15:08,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 340 transitions, 4786 flow [2024-11-10 18:15:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 18:15:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 18:15:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 250 transitions. [2024-11-10 18:15:08,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-11-10 18:15:08,349 INFO L175 Difference]: Start difference. First operand has 121 places, 209 transitions, 2435 flow. Second operand 14 states and 250 transitions. [2024-11-10 18:15:08,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 340 transitions, 4786 flow [2024-11-10 18:15:08,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 340 transitions, 4688 flow, removed 49 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:08,525 INFO L231 Difference]: Finished difference. Result has 144 places, 250 transitions, 3523 flow [2024-11-10 18:15:08,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3523, PETRI_PLACES=144, PETRI_TRANSITIONS=250} [2024-11-10 18:15:08,526 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 108 predicate places. [2024-11-10 18:15:08,526 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 250 transitions, 3523 flow [2024-11-10 18:15:08,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:15:08,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:08,526 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:08,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:15:08,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:08,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash 880885859, now seen corresponding path program 7 times [2024-11-10 18:15:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:08,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970082518] [2024-11-10 18:15:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:08,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970082518] [2024-11-10 18:15:08,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970082518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787011275] [2024-11-10 18:15:08,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 18:15:08,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:08,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:08,734 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) [2024-11-10 18:15:08,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:15:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:08,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 18:15:08,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:08,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:09,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787011275] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:09,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-10 18:15:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584638761] [2024-11-10 18:15:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:09,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:15:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:15:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:15:09,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:09,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 250 transitions, 3523 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-10 18:15:09,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:09,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:09,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:10,867 INFO L124 PetriNetUnfolderBase]: 5773/8804 cut-off events. [2024-11-10 18:15:10,867 INFO L125 PetriNetUnfolderBase]: For 148801/148801 co-relation queries the response was YES. [2024-11-10 18:15:10,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57420 conditions, 8804 events. 5773/8804 cut-off events. For 148801/148801 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 55747 event pairs, 687 based on Foata normal form. 14/8796 useless extension candidates. Maximal degree in co-relation 57362. Up to 2660 conditions per place. [2024-11-10 18:15:10,951 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 306 selfloop transitions, 265 changer transitions 8/583 dead transitions. [2024-11-10 18:15:10,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 583 transitions, 9602 flow [2024-11-10 18:15:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-11-10 18:15:10,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 18:15:10,953 INFO L175 Difference]: Start difference. First operand has 144 places, 250 transitions, 3523 flow. Second operand 9 states and 189 transitions. [2024-11-10 18:15:10,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 583 transitions, 9602 flow [2024-11-10 18:15:11,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 583 transitions, 9148 flow, removed 227 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:11,306 INFO L231 Difference]: Finished difference. Result has 160 places, 428 transitions, 7333 flow [2024-11-10 18:15:11,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7333, PETRI_PLACES=160, PETRI_TRANSITIONS=428} [2024-11-10 18:15:11,307 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 124 predicate places. [2024-11-10 18:15:11,307 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 428 transitions, 7333 flow [2024-11-10 18:15:11,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-10 18:15:11,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:11,308 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:11,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:11,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:11,509 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:11,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash 740276087, now seen corresponding path program 8 times [2024-11-10 18:15:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021186170] [2024-11-10 18:15:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:11,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021186170] [2024-11-10 18:15:11,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021186170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933502435] [2024-11-10 18:15:11,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:15:11,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:11,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:11,638 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) [2024-11-10 18:15:11,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:15:11,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:11,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:11,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:15:11,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:11,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:11,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933502435] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:11,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2024-11-10 18:15:11,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429193424] [2024-11-10 18:15:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:11,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:15:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:15:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:15:11,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:11,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 428 transitions, 7333 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:11,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:11,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:11,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:13,584 INFO L124 PetriNetUnfolderBase]: 5321/8268 cut-off events. [2024-11-10 18:15:13,584 INFO L125 PetriNetUnfolderBase]: For 181396/181800 co-relation queries the response was YES. [2024-11-10 18:15:13,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61379 conditions, 8268 events. 5321/8268 cut-off events. For 181396/181800 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 54025 event pairs, 1259 based on Foata normal form. 110/8275 useless extension candidates. Maximal degree in co-relation 61313. Up to 3168 conditions per place. [2024-11-10 18:15:13,787 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 350 selfloop transitions, 114 changer transitions 0/500 dead transitions. [2024-11-10 18:15:13,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 500 transitions, 9071 flow [2024-11-10 18:15:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-11-10 18:15:13,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-10 18:15:13,789 INFO L175 Difference]: Start difference. First operand has 160 places, 428 transitions, 7333 flow. Second operand 7 states and 141 transitions. [2024-11-10 18:15:13,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 500 transitions, 9071 flow [2024-11-10 18:15:14,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 500 transitions, 8971 flow, removed 50 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:14,193 INFO L231 Difference]: Finished difference. Result has 170 places, 440 transitions, 7785 flow [2024-11-10 18:15:14,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7239, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7785, PETRI_PLACES=170, PETRI_TRANSITIONS=440} [2024-11-10 18:15:14,194 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 134 predicate places. [2024-11-10 18:15:14,194 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 440 transitions, 7785 flow [2024-11-10 18:15:14,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:14,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:14,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:14,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:14,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:14,396 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:14,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash -789816177, now seen corresponding path program 9 times [2024-11-10 18:15:14,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:14,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138529385] [2024-11-10 18:15:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:14,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:14,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:14,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138529385] [2024-11-10 18:15:14,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138529385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:14,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:14,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:15:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916581711] [2024-11-10 18:15:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:14,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:15:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:15:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:15:14,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:14,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 440 transitions, 7785 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:15:14,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:14,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:14,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:16,383 INFO L124 PetriNetUnfolderBase]: 5501/8502 cut-off events. [2024-11-10 18:15:16,383 INFO L125 PetriNetUnfolderBase]: For 196434/196769 co-relation queries the response was YES. [2024-11-10 18:15:16,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64752 conditions, 8502 events. 5501/8502 cut-off events. For 196434/196769 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 55109 event pairs, 1423 based on Foata normal form. 70/8484 useless extension candidates. Maximal degree in co-relation 64681. Up to 5182 conditions per place. [2024-11-10 18:15:16,476 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 327 selfloop transitions, 193 changer transitions 0/556 dead transitions. [2024-11-10 18:15:16,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 556 transitions, 10570 flow [2024-11-10 18:15:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 18:15:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 18:15:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-11-10 18:15:16,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-10 18:15:16,478 INFO L175 Difference]: Start difference. First operand has 170 places, 440 transitions, 7785 flow. Second operand 8 states and 156 transitions. [2024-11-10 18:15:16,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 556 transitions, 10570 flow [2024-11-10 18:15:16,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 556 transitions, 10368 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:16,918 INFO L231 Difference]: Finished difference. Result has 181 places, 488 transitions, 9242 flow [2024-11-10 18:15:16,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9242, PETRI_PLACES=181, PETRI_TRANSITIONS=488} [2024-11-10 18:15:16,919 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 145 predicate places. [2024-11-10 18:15:16,919 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 488 transitions, 9242 flow [2024-11-10 18:15:16,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:15:16,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:16,919 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:16,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 18:15:16,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:16,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1517448647, now seen corresponding path program 10 times [2024-11-10 18:15:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:16,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240226386] [2024-11-10 18:15:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:17,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:17,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240226386] [2024-11-10 18:15:17,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240226386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:17,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074174728] [2024-11-10 18:15:17,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:15:17,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:17,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:17,047 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) [2024-11-10 18:15:17,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:15:17,187 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:15:17,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:17,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:15:17,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:17,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:17,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074174728] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:17,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:17,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-10 18:15:17,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790268514] [2024-11-10 18:15:17,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:17,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:15:17,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:17,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:15:17,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:15:17,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:17,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 488 transitions, 9242 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:17,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:17,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:19,121 INFO L124 PetriNetUnfolderBase]: 5536/8632 cut-off events. [2024-11-10 18:15:19,121 INFO L125 PetriNetUnfolderBase]: For 221772/222133 co-relation queries the response was YES. [2024-11-10 18:15:19,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68439 conditions, 8632 events. 5536/8632 cut-off events. For 221772/222133 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 56980 event pairs, 1253 based on Foata normal form. 127/8674 useless extension candidates. Maximal degree in co-relation 68362. Up to 3496 conditions per place. [2024-11-10 18:15:19,247 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 385 selfloop transitions, 135 changer transitions 0/556 dead transitions. [2024-11-10 18:15:19,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 556 transitions, 11017 flow [2024-11-10 18:15:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-11-10 18:15:19,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-10 18:15:19,253 INFO L175 Difference]: Start difference. First operand has 181 places, 488 transitions, 9242 flow. Second operand 7 states and 141 transitions. [2024-11-10 18:15:19,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 556 transitions, 11017 flow [2024-11-10 18:15:19,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 556 transitions, 10751 flow, removed 133 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:19,915 INFO L231 Difference]: Finished difference. Result has 191 places, 500 transitions, 9549 flow [2024-11-10 18:15:19,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8976, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9549, PETRI_PLACES=191, PETRI_TRANSITIONS=500} [2024-11-10 18:15:19,916 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 155 predicate places. [2024-11-10 18:15:19,916 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 500 transitions, 9549 flow [2024-11-10 18:15:19,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:19,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:19,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:19,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:15:20,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 18:15:20,118 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:20,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 155661921, now seen corresponding path program 11 times [2024-11-10 18:15:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868784207] [2024-11-10 18:15:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:20,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:20,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868784207] [2024-11-10 18:15:20,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868784207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:20,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458124299] [2024-11-10 18:15:20,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 18:15:20,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:20,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:20,375 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) [2024-11-10 18:15:20,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:15:20,431 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:20,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:20,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 18:15:20,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:20,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:20,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458124299] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:20,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:20,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-10 18:15:20,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922074770] [2024-11-10 18:15:20,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:20,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:15:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:15:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:15:20,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:20,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 500 transitions, 9549 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:20,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:20,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:20,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:22,260 INFO L124 PetriNetUnfolderBase]: 5432/8488 cut-off events. [2024-11-10 18:15:22,260 INFO L125 PetriNetUnfolderBase]: For 224152/224499 co-relation queries the response was YES. [2024-11-10 18:15:22,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67949 conditions, 8488 events. 5432/8488 cut-off events. For 224152/224499 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 56112 event pairs, 1258 based on Foata normal form. 71/8476 useless extension candidates. Maximal degree in co-relation 67867. Up to 3334 conditions per place. [2024-11-10 18:15:22,352 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 385 selfloop transitions, 130 changer transitions 0/551 dead transitions. [2024-11-10 18:15:22,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 551 transitions, 11080 flow [2024-11-10 18:15:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-11-10 18:15:22,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-10 18:15:22,353 INFO L175 Difference]: Start difference. First operand has 191 places, 500 transitions, 9549 flow. Second operand 7 states and 141 transitions. [2024-11-10 18:15:22,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 551 transitions, 11080 flow [2024-11-10 18:15:22,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 551 transitions, 10851 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:22,909 INFO L231 Difference]: Finished difference. Result has 198 places, 499 transitions, 9608 flow [2024-11-10 18:15:22,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9280, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9608, PETRI_PLACES=198, PETRI_TRANSITIONS=499} [2024-11-10 18:15:22,910 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 162 predicate places. [2024-11-10 18:15:22,910 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 499 transitions, 9608 flow [2024-11-10 18:15:22,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:22,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:22,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:22,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 18:15:23,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:23,111 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:23,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash 210977791, now seen corresponding path program 12 times [2024-11-10 18:15:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727285420] [2024-11-10 18:15:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:23,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:23,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:23,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727285420] [2024-11-10 18:15:23,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727285420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:23,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611823402] [2024-11-10 18:15:23,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 18:15:23,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:23,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:23,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:15:23,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 18:15:23,364 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 18:15:23,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:23,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:15:23,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:23,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:23,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611823402] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:23,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:23,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-11-10 18:15:23,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682634502] [2024-11-10 18:15:23,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:23,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:15:23,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:15:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-10 18:15:23,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:23,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 499 transitions, 9608 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:23,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:23,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:23,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:25,546 INFO L124 PetriNetUnfolderBase]: 5325/8308 cut-off events. [2024-11-10 18:15:25,546 INFO L125 PetriNetUnfolderBase]: For 226363/226666 co-relation queries the response was YES. [2024-11-10 18:15:25,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66726 conditions, 8308 events. 5325/8308 cut-off events. For 226363/226666 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 54703 event pairs, 1252 based on Foata normal form. 127/8364 useless extension candidates. Maximal degree in co-relation 66641. Up to 3284 conditions per place. [2024-11-10 18:15:25,640 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 378 selfloop transitions, 133 changer transitions 0/547 dead transitions. [2024-11-10 18:15:25,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 547 transitions, 11086 flow [2024-11-10 18:15:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-11-10 18:15:25,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-11-10 18:15:25,641 INFO L175 Difference]: Start difference. First operand has 198 places, 499 transitions, 9608 flow. Second operand 7 states and 139 transitions. [2024-11-10 18:15:25,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 547 transitions, 11086 flow [2024-11-10 18:15:26,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 547 transitions, 10942 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:26,205 INFO L231 Difference]: Finished difference. Result has 205 places, 495 transitions, 9752 flow [2024-11-10 18:15:26,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9392, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9752, PETRI_PLACES=205, PETRI_TRANSITIONS=495} [2024-11-10 18:15:26,206 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 169 predicate places. [2024-11-10 18:15:26,206 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 495 transitions, 9752 flow [2024-11-10 18:15:26,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-10 18:15:26,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:26,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:26,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:26,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:26,407 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:26,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash -294646347, now seen corresponding path program 13 times [2024-11-10 18:15:26,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:26,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913055843] [2024-11-10 18:15:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:26,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:26,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:26,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913055843] [2024-11-10 18:15:26,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913055843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:26,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281701849] [2024-11-10 18:15:26,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 18:15:26,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:26,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:26,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:15:26,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 18:15:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:26,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:15:26,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:26,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281701849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:27,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:27,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-10 18:15:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391047315] [2024-11-10 18:15:27,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:27,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 18:15:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 18:15:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-10 18:15:27,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:27,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 495 transitions, 9752 flow. Second operand has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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) [2024-11-10 18:15:27,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:27,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:27,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:32,415 INFO L124 PetriNetUnfolderBase]: 11681/17696 cut-off events. [2024-11-10 18:15:32,415 INFO L125 PetriNetUnfolderBase]: For 456098/456114 co-relation queries the response was YES. [2024-11-10 18:15:32,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142739 conditions, 17696 events. 11681/17696 cut-off events. For 456098/456114 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 124029 event pairs, 1067 based on Foata normal form. 98/17788 useless extension candidates. Maximal degree in co-relation 142651. Up to 5455 conditions per place. [2024-11-10 18:15:32,675 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 830 selfloop transitions, 692 changer transitions 3/1529 dead transitions. [2024-11-10 18:15:32,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1529 transitions, 30689 flow [2024-11-10 18:15:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-10 18:15:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-10 18:15:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 766 transitions. [2024-11-10 18:15:32,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066137566137566 [2024-11-10 18:15:32,677 INFO L175 Difference]: Start difference. First operand has 205 places, 495 transitions, 9752 flow. Second operand 42 states and 766 transitions. [2024-11-10 18:15:32,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1529 transitions, 30689 flow [2024-11-10 18:15:34,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1529 transitions, 30287 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:34,279 INFO L231 Difference]: Finished difference. Result has 280 places, 1022 transitions, 23263 flow [2024-11-10 18:15:34,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9605, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=23263, PETRI_PLACES=280, PETRI_TRANSITIONS=1022} [2024-11-10 18:15:34,280 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 244 predicate places. [2024-11-10 18:15:34,281 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 1022 transitions, 23263 flow [2024-11-10 18:15:34,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 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) [2024-11-10 18:15:34,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:34,281 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:34,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:34,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 18:15:34,486 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:34,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1286793957, now seen corresponding path program 14 times [2024-11-10 18:15:34,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:34,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721790646] [2024-11-10 18:15:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721790646] [2024-11-10 18:15:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721790646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:34,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079187986] [2024-11-10 18:15:34,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:15:34,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:34,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:15:34,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 18:15:34,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:34,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:34,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:15:34,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:34,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079187986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:34,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:34,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 18:15:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122157950] [2024-11-10 18:15:34,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:34,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 18:15:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 18:15:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-10 18:15:34,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:34,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1022 transitions, 23263 flow. Second operand has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 15 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:15:34,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:34,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:34,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:41,162 INFO L124 PetriNetUnfolderBase]: 11976/18101 cut-off events. [2024-11-10 18:15:41,162 INFO L125 PetriNetUnfolderBase]: For 655161/655259 co-relation queries the response was YES. [2024-11-10 18:15:41,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171720 conditions, 18101 events. 11976/18101 cut-off events. For 655161/655259 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 126906 event pairs, 1774 based on Foata normal form. 144/18239 useless extension candidates. Maximal degree in co-relation 171597. Up to 9543 conditions per place. [2024-11-10 18:15:41,512 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 800 selfloop transitions, 660 changer transitions 0/1464 dead transitions. [2024-11-10 18:15:41,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 1464 transitions, 34106 flow [2024-11-10 18:15:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-10 18:15:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-10 18:15:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 483 transitions. [2024-11-10 18:15:41,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-11-10 18:15:41,514 INFO L175 Difference]: Start difference. First operand has 280 places, 1022 transitions, 23263 flow. Second operand 27 states and 483 transitions. [2024-11-10 18:15:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 1464 transitions, 34106 flow [2024-11-10 18:15:44,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1464 transitions, 32499 flow, removed 763 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:44,798 INFO L231 Difference]: Finished difference. Result has 320 places, 1233 transitions, 27806 flow [2024-11-10 18:15:44,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22105, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=27806, PETRI_PLACES=320, PETRI_TRANSITIONS=1233} [2024-11-10 18:15:44,799 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 284 predicate places. [2024-11-10 18:15:44,799 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 1233 transitions, 27806 flow [2024-11-10 18:15:44,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 15 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:15:44,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:44,800 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:44,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:45,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 18:15:45,004 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:45,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2030859481, now seen corresponding path program 15 times [2024-11-10 18:15:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:45,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54648300] [2024-11-10 18:15:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:45,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:45,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54648300] [2024-11-10 18:15:45,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54648300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:45,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043978236] [2024-11-10 18:15:45,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:15:45,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:45,147 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:15:45,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 18:15:45,219 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:15:45,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:45,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:15:45,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:45,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:45,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043978236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:45,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:45,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-10 18:15:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582516473] [2024-11-10 18:15:45,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:45,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 18:15:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 18:15:45,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-10 18:15:45,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:45,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1233 transitions, 27806 flow. Second operand has 16 states, 16 states have (on average 10.3125) internal successors, (165), 16 states have internal predecessors, (165), 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) [2024-11-10 18:15:45,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:45,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:45,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:51,903 INFO L124 PetriNetUnfolderBase]: 11960/18038 cut-off events. [2024-11-10 18:15:51,903 INFO L125 PetriNetUnfolderBase]: For 729183/729237 co-relation queries the response was YES. [2024-11-10 18:15:52,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177812 conditions, 18038 events. 11960/18038 cut-off events. For 729183/729237 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 126308 event pairs, 1568 based on Foata normal form. 121/18153 useless extension candidates. Maximal degree in co-relation 177674. Up to 8450 conditions per place. [2024-11-10 18:15:52,175 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 838 selfloop transitions, 732 changer transitions 0/1574 dead transitions. [2024-11-10 18:15:52,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1574 transitions, 36950 flow [2024-11-10 18:15:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 18:15:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 18:15:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 544 transitions. [2024-11-10 18:15:52,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4874551971326165 [2024-11-10 18:15:52,177 INFO L175 Difference]: Start difference. First operand has 320 places, 1233 transitions, 27806 flow. Second operand 31 states and 544 transitions. [2024-11-10 18:15:52,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1574 transitions, 36950 flow [2024-11-10 18:15:56,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1574 transitions, 35911 flow, removed 507 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:56,309 INFO L231 Difference]: Finished difference. Result has 368 places, 1295 transitions, 30354 flow [2024-11-10 18:15:56,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=26771, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=654, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=30354, PETRI_PLACES=368, PETRI_TRANSITIONS=1295} [2024-11-10 18:15:56,311 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 332 predicate places. [2024-11-10 18:15:56,311 INFO L471 AbstractCegarLoop]: Abstraction has has 368 places, 1295 transitions, 30354 flow [2024-11-10 18:15:56,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.3125) internal successors, (165), 16 states have internal predecessors, (165), 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) [2024-11-10 18:15:56,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:56,311 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:56,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 18:15:56,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 18:15:56,512 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:56,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1092246685, now seen corresponding path program 16 times [2024-11-10 18:15:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:56,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299474130] [2024-11-10 18:15:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:56,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:56,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:56,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299474130] [2024-11-10 18:15:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299474130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936046046] [2024-11-10 18:15:56,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:15:56,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:56,615 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:15:56,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 18:15:56,673 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:15:56,673 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:56,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:15:56,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:56,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:57,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936046046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:57,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:57,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2024-11-10 18:15:57,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656363665] [2024-11-10 18:15:57,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:57,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:15:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:15:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:15:57,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:57,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1295 transitions, 30354 flow. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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) [2024-11-10 18:15:57,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:57,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:57,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:06,306 INFO L124 PetriNetUnfolderBase]: 14394/22124 cut-off events. [2024-11-10 18:16:06,306 INFO L125 PetriNetUnfolderBase]: For 946217/946233 co-relation queries the response was YES. [2024-11-10 18:16:06,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220881 conditions, 22124 events. 14394/22124 cut-off events. For 946217/946233 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 163998 event pairs, 1830 based on Foata normal form. 130/22246 useless extension candidates. Maximal degree in co-relation 220723. Up to 9097 conditions per place. [2024-11-10 18:16:06,789 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 1205 selfloop transitions, 885 changer transitions 3/2097 dead transitions. [2024-11-10 18:16:06,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 2097 transitions, 49317 flow [2024-11-10 18:16:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-10 18:16:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-10 18:16:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 739 transitions. [2024-11-10 18:16:06,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5006775067750677 [2024-11-10 18:16:06,793 INFO L175 Difference]: Start difference. First operand has 368 places, 1295 transitions, 30354 flow. Second operand 41 states and 739 transitions. [2024-11-10 18:16:06,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 2097 transitions, 49317 flow [2024-11-10 18:16:11,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 2097 transitions, 48723 flow, removed 107 selfloop flow, removed 5 redundant places. [2024-11-10 18:16:12,007 INFO L231 Difference]: Finished difference. Result has 437 places, 1630 transitions, 40828 flow [2024-11-10 18:16:12,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=29621, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=586, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=40828, PETRI_PLACES=437, PETRI_TRANSITIONS=1630} [2024-11-10 18:16:12,009 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 401 predicate places. [2024-11-10 18:16:12,009 INFO L471 AbstractCegarLoop]: Abstraction has has 437 places, 1630 transitions, 40828 flow [2024-11-10 18:16:12,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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) [2024-11-10 18:16:12,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:12,009 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:16:12,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 18:16:12,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 18:16:12,210 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:16:12,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:12,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2031946355, now seen corresponding path program 17 times [2024-11-10 18:16:12,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:12,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176305277] [2024-11-10 18:16:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:12,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:12,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176305277] [2024-11-10 18:16:12,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176305277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:12,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:12,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:16:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648522260] [2024-11-10 18:16:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:12,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:16:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:16:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:16:12,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:16:12,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1630 transitions, 40828 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-10 18:16:12,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:12,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:16:12,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand