./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.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/popl20-nonblocking-cntr.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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:21:49,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:21:49,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:21:49,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:21:49,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:21:49,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:21:49,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:21:49,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:21:49,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:21:49,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:21:49,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:21:49,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:21:49,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:21:49,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:21:49,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:21:49,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:21:49,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:21:49,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:21:49,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:21:49,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:21:49,148 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:21:49,148 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:21:49,152 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:21:49,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:21:49,153 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:21:49,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:21:49,153 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:21:49,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:21:49,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:21:49,154 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:21:49,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:21:49,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:21:49,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:21:49,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:21:49,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:21:49,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:21:49,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:21:49,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:21:49,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:21:49,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:21:49,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:21:49,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:21:49,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-11-10 18:21:49,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:21:49,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:21:49,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:21:49,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:21:49,399 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:21:49,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-10 18:21:50,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:21:51,210 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:21:51,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-10 18:21:51,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a281f5fd0/78bc49b825a84fd09efb1297ec9cd75b/FLAGeabd98ce3 [2024-11-10 18:21:51,560 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a281f5fd0/78bc49b825a84fd09efb1297ec9cd75b [2024-11-10 18:21:51,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:21:51,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:21:51,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:21:51,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:21:51,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:21:51,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357b6aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51, skipping insertion in model container [2024-11-10 18:21:51,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:21:51,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:21:51,827 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:21:51,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:21:51,863 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:21:51,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51 WrapperNode [2024-11-10 18:21:51,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:21:51,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:21:51,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:21:51,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:21:51,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,897 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-11-10 18:21:51,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:21:51,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:21:51,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:21:51,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:21:51,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,922 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 18:21:51,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,927 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:21:51,932 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:21:51,932 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:21:51,932 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:21:51,933 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (1/1) ... [2024-11-10 18:21:51,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:21:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:21:51,978 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 18:21:51,982 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 18:21:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:21:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:21:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:21:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:21:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:21:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:21:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 18:21:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 18:21:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:21:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:21:52,044 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 18:21:52,187 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:21:52,194 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:21:52,361 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:21:52,362 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:21:52,445 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:21:52,445 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:21:52,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:21:52 BoogieIcfgContainer [2024-11-10 18:21:52,446 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:21:52,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:21:52,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:21:52,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:21:52,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:21:51" (1/3) ... [2024-11-10 18:21:52,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f22a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:21:52, skipping insertion in model container [2024-11-10 18:21:52,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:21:51" (2/3) ... [2024-11-10 18:21:52,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f22a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:21:52, skipping insertion in model container [2024-11-10 18:21:52,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:21:52" (3/3) ... [2024-11-10 18:21:52,452 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-11-10 18:21:52,465 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:21:52,465 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:21:52,465 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:21:52,496 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:21:52,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-10 18:21:52,547 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-10 18:21:52,547 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:21:52,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-10 18:21:52,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-10 18:21:52,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-10 18:21:52,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:21:52,566 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;@1a06091d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:21:52,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 18:21:52,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:21:52,573 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2024-11-10 18:21:52,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:21:52,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:52,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:21:52,574 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:52,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash -750922245, now seen corresponding path program 1 times [2024-11-10 18:21:52,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:52,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595628506] [2024-11-10 18:21:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:52,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:52,713 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 18:21:52,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595628506] [2024-11-10 18:21:52,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595628506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:21:52,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:21:52,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:21:52,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684415632] [2024-11-10 18:21:52,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:21:52,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:21:52,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:21:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:21:52,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-10 18:21:52,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 18:21:52,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:52,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-10 18:21:52,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:21:52,792 INFO L124 PetriNetUnfolderBase]: 48/105 cut-off events. [2024-11-10 18:21:52,793 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 18:21:52,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 105 events. 48/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 339 event pairs, 31 based on Foata normal form. 18/101 useless extension candidates. Maximal degree in co-relation 178. Up to 87 conditions per place. [2024-11-10 18:21:52,795 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 15 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2024-11-10 18:21:52,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 86 flow [2024-11-10 18:21:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:21:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:21:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 38 transitions. [2024-11-10 18:21:52,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2024-11-10 18:21:52,806 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 2 states and 38 transitions. [2024-11-10 18:21:52,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 86 flow [2024-11-10 18:21:52,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 78 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:21:52,810 INFO L231 Difference]: Finished difference. Result has 24 places, 22 transitions, 48 flow [2024-11-10 18:21:52,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=22} [2024-11-10 18:21:52,818 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2024-11-10 18:21:52,818 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 22 transitions, 48 flow [2024-11-10 18:21:52,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 18:21:52,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:52,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:21:52,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:21:52,819 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:52,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1184981169, now seen corresponding path program 1 times [2024-11-10 18:21:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332591924] [2024-11-10 18:21:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:53,028 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 18:21:53,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332591924] [2024-11-10 18:21:53,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332591924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:21:53,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:21:53,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:21:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16365884] [2024-11-10 18:21:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:21:53,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:21:53,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:53,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:21:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:21:53,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-10 18:21:53,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:21:53,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:53,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-10 18:21:53,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:21:53,120 INFO L124 PetriNetUnfolderBase]: 81/174 cut-off events. [2024-11-10 18:21:53,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:21:53,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 174 events. 81/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 611 event pairs, 33 based on Foata normal form. 8/159 useless extension candidates. Maximal degree in co-relation 325. Up to 105 conditions per place. [2024-11-10 18:21:53,124 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-11-10 18:21:53,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 113 flow [2024-11-10 18:21:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:21:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:21:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-11-10 18:21:53,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2024-11-10 18:21:53,127 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 4 states and 61 transitions. [2024-11-10 18:21:53,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 113 flow [2024-11-10 18:21:53,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:21:53,129 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 62 flow [2024-11-10 18:21:53,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2024-11-10 18:21:53,130 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2024-11-10 18:21:53,132 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 62 flow [2024-11-10 18:21:53,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:21:53,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:53,132 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] [2024-11-10 18:21:53,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:21:53,133 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:53,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash 121025651, now seen corresponding path program 1 times [2024-11-10 18:21:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:53,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221825311] [2024-11-10 18:21:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:53,227 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 18:21:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221825311] [2024-11-10 18:21:53,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221825311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:21:53,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:21:53,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:21:53,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966158491] [2024-11-10 18:21:53,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:21:53,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:21:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:53,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:21:53,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:21:53,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-10 18:21:53,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:21:53,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:53,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-10 18:21:53,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:21:53,410 INFO L124 PetriNetUnfolderBase]: 108/249 cut-off events. [2024-11-10 18:21:53,414 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-10 18:21:53,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 249 events. 108/249 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1024 event pairs, 66 based on Foata normal form. 13/248 useless extension candidates. Maximal degree in co-relation 501. Up to 156 conditions per place. [2024-11-10 18:21:53,418 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-10 18:21:53,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 137 flow [2024-11-10 18:21:53,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:21:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:21:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-10 18:21:53,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-11-10 18:21:53,423 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 62 flow. Second operand 4 states and 60 transitions. [2024-11-10 18:21:53,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 137 flow [2024-11-10 18:21:53,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:21:53,425 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 72 flow [2024-11-10 18:21:53,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-11-10 18:21:53,426 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-11-10 18:21:53,426 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 72 flow [2024-11-10 18:21:53,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:21:53,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:53,426 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:21:53,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:21:53,431 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:53,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 21133865, now seen corresponding path program 1 times [2024-11-10 18:21:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458246560] [2024-11-10 18:21:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:53,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:21:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458246560] [2024-11-10 18:21:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458246560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:21:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741406432] [2024-11-10 18:21:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:53,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:53,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:21:53,695 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 18:21:53,697 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 18:21:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:53,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:21:53,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:21:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:21:53,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:21:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:54,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741406432] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:21:54,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:21:54,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 5 [2024-11-10 18:21:54,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669779857] [2024-11-10 18:21:54,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:21:54,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:21:54,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:21:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:21:54,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-10 18:21:54,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:21:54,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:54,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-10 18:21:54,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:21:54,546 INFO L124 PetriNetUnfolderBase]: 153/380 cut-off events. [2024-11-10 18:21:54,547 INFO L125 PetriNetUnfolderBase]: For 116/132 co-relation queries the response was YES. [2024-11-10 18:21:54,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 380 events. 153/380 cut-off events. For 116/132 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1814 event pairs, 23 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 817. Up to 97 conditions per place. [2024-11-10 18:21:54,555 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 35 selfloop transitions, 5 changer transitions 3/50 dead transitions. [2024-11-10 18:21:54,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 50 transitions, 238 flow [2024-11-10 18:21:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:21:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:21:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-10 18:21:54,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6810344827586207 [2024-11-10 18:21:54,558 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 72 flow. Second operand 4 states and 79 transitions. [2024-11-10 18:21:54,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 50 transitions, 238 flow [2024-11-10 18:21:54,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:21:54,565 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 106 flow [2024-11-10 18:21:54,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-10 18:21:54,566 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-10 18:21:54,566 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 106 flow [2024-11-10 18:21:54,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:21:54,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:54,568 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:21:54,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:21:54,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:54,769 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:54,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:54,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1637620255, now seen corresponding path program 2 times [2024-11-10 18:21:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:54,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136932288] [2024-11-10 18:21:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:21:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136932288] [2024-11-10 18:21:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136932288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:21:54,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806094970] [2024-11-10 18:21:54,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:21:54,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:54,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:21:54,981 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 18:21:54,982 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 18:21:55,026 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:21:55,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:21:55,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:21:55,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:21:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:21:55,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:21:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:21:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806094970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:21:55,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:21:55,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 18:21:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358425169] [2024-11-10 18:21:55,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:21:55,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:21:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:21:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:21:55,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-10 18:21:55,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 106 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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 18:21:55,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:55,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-10 18:21:55,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:21:55,418 INFO L124 PetriNetUnfolderBase]: 319/691 cut-off events. [2024-11-10 18:21:55,419 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2024-11-10 18:21:55,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 691 events. 319/691 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3664 event pairs, 49 based on Foata normal form. 18/691 useless extension candidates. Maximal degree in co-relation 1695. Up to 298 conditions per place. [2024-11-10 18:21:55,424 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 41 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-11-10 18:21:55,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 59 transitions, 341 flow [2024-11-10 18:21:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:21:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:21:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-11-10 18:21:55,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-11-10 18:21:55,425 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 106 flow. Second operand 6 states and 89 transitions. [2024-11-10 18:21:55,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 59 transitions, 341 flow [2024-11-10 18:21:55,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 341 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:21:55,427 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 227 flow [2024-11-10 18:21:55,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-11-10 18:21:55,428 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-11-10 18:21:55,428 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 227 flow [2024-11-10 18:21:55,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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 18:21:55,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:55,429 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:21:55,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:21:55,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:55,633 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:55,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash 218280853, now seen corresponding path program 3 times [2024-11-10 18:21:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122190105] [2024-11-10 18:21:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:55,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122190105] [2024-11-10 18:21:55,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122190105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:21:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651133866] [2024-11-10 18:21:55,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:21:55,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:55,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:21:55,737 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 18:21:55,738 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 18:21:55,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:21:55,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:21:55,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:21:55,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:21:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:55,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:21:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:56,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651133866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:21:56,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:21:56,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 18:21:56,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060321168] [2024-11-10 18:21:56,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:21:56,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 18:21:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 18:21:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-11-10 18:21:56,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:21:56,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 227 flow. Second operand has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 21 states have internal predecessors, (175), 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 18:21:56,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:56,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:21:56,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:21:57,082 INFO L124 PetriNetUnfolderBase]: 1264/2273 cut-off events. [2024-11-10 18:21:57,083 INFO L125 PetriNetUnfolderBase]: For 3559/3559 co-relation queries the response was YES. [2024-11-10 18:21:57,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6904 conditions, 2273 events. 1264/2273 cut-off events. For 3559/3559 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13221 event pairs, 77 based on Foata normal form. 36/2308 useless extension candidates. Maximal degree in co-relation 6892. Up to 404 conditions per place. [2024-11-10 18:21:57,100 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 146 selfloop transitions, 77 changer transitions 17/243 dead transitions. [2024-11-10 18:21:57,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 243 transitions, 1857 flow [2024-11-10 18:21:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 18:21:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 18:21:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 342 transitions. [2024-11-10 18:21:57,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4211822660098522 [2024-11-10 18:21:57,103 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 227 flow. Second operand 28 states and 342 transitions. [2024-11-10 18:21:57,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 243 transitions, 1857 flow [2024-11-10 18:21:57,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 243 transitions, 1845 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-10 18:21:57,118 INFO L231 Difference]: Finished difference. Result has 84 places, 118 transitions, 1086 flow [2024-11-10 18:21:57,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1086, PETRI_PLACES=84, PETRI_TRANSITIONS=118} [2024-11-10 18:21:57,119 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-11-10 18:21:57,120 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 118 transitions, 1086 flow [2024-11-10 18:21:57,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 21 states have internal predecessors, (175), 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 18:21:57,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:57,121 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:21:57,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:21:57,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:57,322 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:57,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2055080493, now seen corresponding path program 4 times [2024-11-10 18:21:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554767211] [2024-11-10 18:21:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:57,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554767211] [2024-11-10 18:21:57,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554767211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:21:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158572061] [2024-11-10 18:21:57,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:21:57,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:21:57,464 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 18:21:57,465 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 18:21:57,501 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:21:57,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:21:57,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:21:57,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:21:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:57,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:21:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158572061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:21:57,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:21:57,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-10 18:21:57,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457196715] [2024-11-10 18:21:57,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:21:57,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 18:21:57,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 18:21:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-10 18:21:57,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:21:57,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 118 transitions, 1086 flow. Second operand has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 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 18:21:57,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:57,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:21:57,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:21:58,400 INFO L124 PetriNetUnfolderBase]: 1639/2996 cut-off events. [2024-11-10 18:21:58,400 INFO L125 PetriNetUnfolderBase]: For 14606/14606 co-relation queries the response was YES. [2024-11-10 18:21:58,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12996 conditions, 2996 events. 1639/2996 cut-off events. For 14606/14606 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 18550 event pairs, 133 based on Foata normal form. 82/3077 useless extension candidates. Maximal degree in co-relation 12968. Up to 1144 conditions per place. [2024-11-10 18:21:58,428 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 193 selfloop transitions, 142 changer transitions 4/342 dead transitions. [2024-11-10 18:21:58,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 342 transitions, 3473 flow [2024-11-10 18:21:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 18:21:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 18:21:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 337 transitions. [2024-11-10 18:21:58,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4469496021220159 [2024-11-10 18:21:58,431 INFO L175 Difference]: Start difference. First operand has 84 places, 118 transitions, 1086 flow. Second operand 26 states and 337 transitions. [2024-11-10 18:21:58,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 342 transitions, 3473 flow [2024-11-10 18:21:58,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 342 transitions, 3358 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-11-10 18:21:58,466 INFO L231 Difference]: Finished difference. Result has 127 places, 214 transitions, 2530 flow [2024-11-10 18:21:58,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2530, PETRI_PLACES=127, PETRI_TRANSITIONS=214} [2024-11-10 18:21:58,468 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-11-10 18:21:58,468 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 214 transitions, 2530 flow [2024-11-10 18:21:58,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.555555555555555) internal successors, (154), 18 states have internal predecessors, (154), 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 18:21:58,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:21:58,469 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:21:58,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:21:58,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:58,671 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:21:58,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:21:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1192267927, now seen corresponding path program 5 times [2024-11-10 18:21:58,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:21:58,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193794541] [2024-11-10 18:21:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:21:58,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:21:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:21:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:58,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:21:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193794541] [2024-11-10 18:21:58,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193794541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:21:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753981147] [2024-11-10 18:21:58,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 18:21:58,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:21:58,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:21:58,770 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 18:21:58,771 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 18:21:58,809 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 18:21:58,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:21:58,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:21:58,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:21:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:58,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:21:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:21:58,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753981147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:21:58,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:21:58,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-10 18:21:58,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36179440] [2024-11-10 18:21:58,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:21:58,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:21:58,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:21:58,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:21:58,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:21:59,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:21:59,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 214 transitions, 2530 flow. Second operand has 19 states, 19 states have (on average 8.631578947368421) internal successors, (164), 19 states have internal predecessors, (164), 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 18:21:59,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:21:59,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:21:59,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:00,192 INFO L124 PetriNetUnfolderBase]: 2267/4176 cut-off events. [2024-11-10 18:22:00,193 INFO L125 PetriNetUnfolderBase]: For 42450/42458 co-relation queries the response was YES. [2024-11-10 18:22:00,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22940 conditions, 4176 events. 2267/4176 cut-off events. For 42450/42458 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27856 event pairs, 131 based on Foata normal form. 88/4264 useless extension candidates. Maximal degree in co-relation 22893. Up to 731 conditions per place. [2024-11-10 18:22:00,225 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 215 selfloop transitions, 287 changer transitions 2/507 dead transitions. [2024-11-10 18:22:00,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 507 transitions, 6649 flow [2024-11-10 18:22:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 18:22:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 18:22:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 443 transitions. [2024-11-10 18:22:00,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.412861136999068 [2024-11-10 18:22:00,228 INFO L175 Difference]: Start difference. First operand has 127 places, 214 transitions, 2530 flow. Second operand 37 states and 443 transitions. [2024-11-10 18:22:00,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 507 transitions, 6649 flow [2024-11-10 18:22:00,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 507 transitions, 6259 flow, removed 193 selfloop flow, removed 1 redundant places. [2024-11-10 18:22:00,305 INFO L231 Difference]: Finished difference. Result has 183 places, 367 transitions, 5306 flow [2024-11-10 18:22:00,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5306, PETRI_PLACES=183, PETRI_TRANSITIONS=367} [2024-11-10 18:22:00,306 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 154 predicate places. [2024-11-10 18:22:00,306 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 367 transitions, 5306 flow [2024-11-10 18:22:00,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.631578947368421) internal successors, (164), 19 states have internal predecessors, (164), 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 18:22:00,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:00,307 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:00,321 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 18:22:00,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:00,509 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:22:00,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1574845207, now seen corresponding path program 6 times [2024-11-10 18:22:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895478778] [2024-11-10 18:22:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:00,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895478778] [2024-11-10 18:22:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895478778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:22:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719388697] [2024-11-10 18:22:00,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 18:22:00,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:00,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:00,623 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 18:22:00,636 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 18:22:00,675 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 18:22:00,676 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:22:00,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:22:00,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:22:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:00,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:22:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:01,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719388697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:22:01,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:22:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2024-11-10 18:22:01,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139925671] [2024-11-10 18:22:01,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:22:01,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 18:22:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 18:22:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-10 18:22:01,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:22:01,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 367 transitions, 5306 flow. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 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 18:22:01,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:01,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:22:01,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:02,912 INFO L124 PetriNetUnfolderBase]: 2599/4802 cut-off events. [2024-11-10 18:22:02,913 INFO L125 PetriNetUnfolderBase]: For 81506/81506 co-relation queries the response was YES. [2024-11-10 18:22:02,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31096 conditions, 4802 events. 2599/4802 cut-off events. For 81506/81506 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32888 event pairs, 150 based on Foata normal form. 36/4838 useless extension candidates. Maximal degree in co-relation 31027. Up to 1299 conditions per place. [2024-11-10 18:22:02,979 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 243 selfloop transitions, 364 changer transitions 6/616 dead transitions. [2024-11-10 18:22:02,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 616 transitions, 9675 flow [2024-11-10 18:22:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 18:22:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-10 18:22:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 401 transitions. [2024-11-10 18:22:02,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41901776384535006 [2024-11-10 18:22:02,983 INFO L175 Difference]: Start difference. First operand has 183 places, 367 transitions, 5306 flow. Second operand 33 states and 401 transitions. [2024-11-10 18:22:02,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 616 transitions, 9675 flow [2024-11-10 18:22:03,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 616 transitions, 9005 flow, removed 298 selfloop flow, removed 7 redundant places. [2024-11-10 18:22:03,332 INFO L231 Difference]: Finished difference. Result has 221 places, 470 transitions, 7678 flow [2024-11-10 18:22:03,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4879, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7678, PETRI_PLACES=221, PETRI_TRANSITIONS=470} [2024-11-10 18:22:03,334 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2024-11-10 18:22:03,335 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 470 transitions, 7678 flow [2024-11-10 18:22:03,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 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 18:22:03,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:03,335 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:03,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 18:22:03,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:03,537 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:22:03,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash 701326927, now seen corresponding path program 7 times [2024-11-10 18:22:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:03,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762268586] [2024-11-10 18:22:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:03,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:03,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:03,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762268586] [2024-11-10 18:22:03,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762268586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:22:03,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14908975] [2024-11-10 18:22:03,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 18:22:03,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:03,681 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 18:22:03,684 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 18:22:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:03,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:22:03,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:22:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:03,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:22:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:22:03,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14908975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:22:03,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:22:03,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-10 18:22:03,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540846511] [2024-11-10 18:22:03,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:22:03,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:22:03,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:22:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:22:03,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:22:03,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 470 transitions, 7678 flow. Second operand has 19 states, 19 states have (on average 8.578947368421053) internal successors, (163), 19 states have internal predecessors, (163), 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 18:22:03,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:03,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:22:03,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:05,520 INFO L124 PetriNetUnfolderBase]: 2782/5107 cut-off events. [2024-11-10 18:22:05,520 INFO L125 PetriNetUnfolderBase]: For 107603/107603 co-relation queries the response was YES. [2024-11-10 18:22:05,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35683 conditions, 5107 events. 2782/5107 cut-off events. For 107603/107603 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35218 event pairs, 214 based on Foata normal form. 16/5123 useless extension candidates. Maximal degree in co-relation 35603. Up to 1660 conditions per place. [2024-11-10 18:22:05,603 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 278 selfloop transitions, 334 changer transitions 1/616 dead transitions. [2024-11-10 18:22:05,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 616 transitions, 10853 flow [2024-11-10 18:22:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 18:22:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 18:22:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 336 transitions. [2024-11-10 18:22:05,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-11-10 18:22:05,607 INFO L175 Difference]: Start difference. First operand has 221 places, 470 transitions, 7678 flow. Second operand 28 states and 336 transitions. [2024-11-10 18:22:05,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 616 transitions, 10853 flow [2024-11-10 18:22:06,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 616 transitions, 10561 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-11-10 18:22:06,226 INFO L231 Difference]: Finished difference. Result has 250 places, 520 transitions, 9354 flow [2024-11-10 18:22:06,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7387, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9354, PETRI_PLACES=250, PETRI_TRANSITIONS=520} [2024-11-10 18:22:06,226 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 221 predicate places. [2024-11-10 18:22:06,226 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 520 transitions, 9354 flow [2024-11-10 18:22:06,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.578947368421053) internal successors, (163), 19 states have internal predecessors, (163), 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 18:22:06,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:06,227 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:06,240 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 18:22:06,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:06,428 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:22:06,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 110501049, now seen corresponding path program 8 times [2024-11-10 18:22:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760982316] [2024-11-10 18:22:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:06,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760982316] [2024-11-10 18:22:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760982316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:22:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334483410] [2024-11-10 18:22:06,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:22:06,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:06,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:06,527 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 18:22:06,529 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 18:22:06,569 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:22:06,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:22:06,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:22:06,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:22:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:06,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:22:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334483410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:22:06,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:22:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-10 18:22:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339534824] [2024-11-10 18:22:06,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:22:06,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 18:22:06,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 18:22:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-10 18:22:06,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:22:06,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 520 transitions, 9354 flow. Second operand has 20 states, 20 states have (on average 8.8) internal successors, (176), 20 states have internal predecessors, (176), 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 18:22:06,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:06,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:22:06,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:09,618 INFO L124 PetriNetUnfolderBase]: 4303/7845 cut-off events. [2024-11-10 18:22:09,618 INFO L125 PetriNetUnfolderBase]: For 165930/165930 co-relation queries the response was YES. [2024-11-10 18:22:09,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59425 conditions, 7845 events. 4303/7845 cut-off events. For 165930/165930 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 57473 event pairs, 77 based on Foata normal form. 66/7911 useless extension candidates. Maximal degree in co-relation 59337. Up to 1358 conditions per place. [2024-11-10 18:22:09,768 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 451 selfloop transitions, 692 changer transitions 135/1281 dead transitions. [2024-11-10 18:22:09,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1281 transitions, 24757 flow [2024-11-10 18:22:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 18:22:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 18:22:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 451 transitions. [2024-11-10 18:22:09,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42031686859273065 [2024-11-10 18:22:09,774 INFO L175 Difference]: Start difference. First operand has 250 places, 520 transitions, 9354 flow. Second operand 37 states and 451 transitions. [2024-11-10 18:22:09,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1281 transitions, 24757 flow [2024-11-10 18:22:11,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1281 transitions, 24319 flow, removed 91 selfloop flow, removed 13 redundant places. [2024-11-10 18:22:11,349 INFO L231 Difference]: Finished difference. Result has 293 places, 860 transitions, 18496 flow [2024-11-10 18:22:11,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9089, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18496, PETRI_PLACES=293, PETRI_TRANSITIONS=860} [2024-11-10 18:22:11,355 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 264 predicate places. [2024-11-10 18:22:11,355 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 860 transitions, 18496 flow [2024-11-10 18:22:11,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.8) internal successors, (176), 20 states have internal predecessors, (176), 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 18:22:11,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:11,356 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:11,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 18:22:11,560 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,SelfDestructingSolverStorable10 [2024-11-10 18:22:11,563 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:22:11,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:11,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1932689833, now seen corresponding path program 9 times [2024-11-10 18:22:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:11,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60227137] [2024-11-10 18:22:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:11,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:11,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:11,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60227137] [2024-11-10 18:22:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60227137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:22:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268713654] [2024-11-10 18:22:11,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:22:11,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:11,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:11,724 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 18:22:11,726 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 18:22:11,767 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 18:22:11,768 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:22:11,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:22:11,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:22:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:11,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:22:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:12,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268713654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:22:12,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:22:12,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-10 18:22:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580919068] [2024-11-10 18:22:12,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:22:12,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 18:22:12,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 18:22:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-10 18:22:12,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:22:12,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 860 transitions, 18496 flow. Second operand has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 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 18:22:12,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:12,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:22:12,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:15,832 INFO L124 PetriNetUnfolderBase]: 5411/9908 cut-off events. [2024-11-10 18:22:15,833 INFO L125 PetriNetUnfolderBase]: For 296791/296791 co-relation queries the response was YES. [2024-11-10 18:22:16,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85090 conditions, 9908 events. 5411/9908 cut-off events. For 296791/296791 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 75581 event pairs, 66 based on Foata normal form. 64/9972 useless extension candidates. Maximal degree in co-relation 84985. Up to 1942 conditions per place. [2024-11-10 18:22:16,208 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 408 selfloop transitions, 1112 changer transitions 23/1546 dead transitions. [2024-11-10 18:22:16,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1546 transitions, 35125 flow [2024-11-10 18:22:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-10 18:22:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-10 18:22:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 418 transitions. [2024-11-10 18:22:16,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41182266009852214 [2024-11-10 18:22:16,210 INFO L175 Difference]: Start difference. First operand has 293 places, 860 transitions, 18496 flow. Second operand 35 states and 418 transitions. [2024-11-10 18:22:16,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1546 transitions, 35125 flow [2024-11-10 18:22:19,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 1546 transitions, 34131 flow, removed 434 selfloop flow, removed 9 redundant places. [2024-11-10 18:22:19,142 INFO L231 Difference]: Finished difference. Result has 335 places, 1330 transitions, 32347 flow [2024-11-10 18:22:19,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=17808, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=32347, PETRI_PLACES=335, PETRI_TRANSITIONS=1330} [2024-11-10 18:22:19,143 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 306 predicate places. [2024-11-10 18:22:19,144 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 1330 transitions, 32347 flow [2024-11-10 18:22:19,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 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 18:22:19,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:19,144 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:19,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 18:22:19,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:19,345 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:22:19,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1157741929, now seen corresponding path program 10 times [2024-11-10 18:22:19,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:19,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387300653] [2024-11-10 18:22:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:19,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:19,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387300653] [2024-11-10 18:22:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387300653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:22:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241608297] [2024-11-10 18:22:19,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:22:19,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:19,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:19,448 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 18:22:19,451 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 18:22:19,486 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:22:19,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:22:19,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:22:19,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:22:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:19,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:22:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:19,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241608297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:22:19,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:22:19,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-10 18:22:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412827457] [2024-11-10 18:22:19,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:22:19,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 18:22:19,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 18:22:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-10 18:22:19,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:22:19,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 1330 transitions, 32347 flow. Second operand has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 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 18:22:19,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:19,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:22:19,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:24,490 INFO L124 PetriNetUnfolderBase]: 6004/11022 cut-off events. [2024-11-10 18:22:24,491 INFO L125 PetriNetUnfolderBase]: For 393987/393999 co-relation queries the response was YES. [2024-11-10 18:22:24,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102969 conditions, 11022 events. 6004/11022 cut-off events. For 393987/393999 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 84936 event pairs, 307 based on Foata normal form. 80/11102 useless extension candidates. Maximal degree in co-relation 102848. Up to 2356 conditions per place. [2024-11-10 18:22:24,707 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 514 selfloop transitions, 1140 changer transitions 11/1668 dead transitions. [2024-11-10 18:22:24,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 1668 transitions, 42167 flow [2024-11-10 18:22:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 18:22:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 18:22:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 465 transitions. [2024-11-10 18:22:24,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43336439888164024 [2024-11-10 18:22:24,709 INFO L175 Difference]: Start difference. First operand has 335 places, 1330 transitions, 32347 flow. Second operand 37 states and 465 transitions. [2024-11-10 18:22:24,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 1668 transitions, 42167 flow [2024-11-10 18:22:30,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1668 transitions, 41381 flow, removed 368 selfloop flow, removed 10 redundant places. [2024-11-10 18:22:30,380 INFO L231 Difference]: Finished difference. Result has 373 places, 1477 transitions, 39585 flow [2024-11-10 18:22:30,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=31656, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=997, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=39585, PETRI_PLACES=373, PETRI_TRANSITIONS=1477} [2024-11-10 18:22:30,382 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 344 predicate places. [2024-11-10 18:22:30,382 INFO L471 AbstractCegarLoop]: Abstraction has has 373 places, 1477 transitions, 39585 flow [2024-11-10 18:22:30,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 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 18:22:30,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:30,383 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:30,396 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 18:22:30,583 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,SelfDestructingSolverStorable12 [2024-11-10 18:22:30,583 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:22:30,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash 113532145, now seen corresponding path program 11 times [2024-11-10 18:22:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:30,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703292425] [2024-11-10 18:22:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:30,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:30,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:30,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703292425] [2024-11-10 18:22:30,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703292425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:22:30,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470468240] [2024-11-10 18:22:30,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 18:22:30,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:30,685 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 18:22:30,689 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 18:22:30,728 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-10 18:22:30,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:22:30,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:22:30,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:22:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:30,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:22:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470468240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:22:30,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:22:30,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-10 18:22:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799093560] [2024-11-10 18:22:30,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:22:30,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:22:30,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:22:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:22:30,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:22:30,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1477 transitions, 39585 flow. Second operand has 19 states, 19 states have (on average 8.578947368421053) internal successors, (163), 19 states have internal predecessors, (163), 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 18:22:30,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:30,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:22:30,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:37,152 INFO L124 PetriNetUnfolderBase]: 6338/11594 cut-off events. [2024-11-10 18:22:37,152 INFO L125 PetriNetUnfolderBase]: For 485997/485997 co-relation queries the response was YES. [2024-11-10 18:22:37,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114853 conditions, 11594 events. 6338/11594 cut-off events. For 485997/485997 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 88891 event pairs, 167 based on Foata normal form. 16/11610 useless extension candidates. Maximal degree in co-relation 114721. Up to 2038 conditions per place. [2024-11-10 18:22:37,382 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 674 selfloop transitions, 1093 changer transitions 11/1781 dead transitions. [2024-11-10 18:22:37,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1781 transitions, 49374 flow [2024-11-10 18:22:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-10 18:22:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-10 18:22:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 413 transitions. [2024-11-10 18:22:37,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41886409736308317 [2024-11-10 18:22:37,384 INFO L175 Difference]: Start difference. First operand has 373 places, 1477 transitions, 39585 flow. Second operand 34 states and 413 transitions. [2024-11-10 18:22:37,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1781 transitions, 49374 flow [2024-11-10 18:22:44,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1781 transitions, 48834 flow, removed 184 selfloop flow, removed 15 redundant places. [2024-11-10 18:22:44,446 INFO L231 Difference]: Finished difference. Result has 399 places, 1577 transitions, 44579 flow [2024-11-10 18:22:44,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=39076, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=988, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=44579, PETRI_PLACES=399, PETRI_TRANSITIONS=1577} [2024-11-10 18:22:44,449 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 370 predicate places. [2024-11-10 18:22:44,449 INFO L471 AbstractCegarLoop]: Abstraction has has 399 places, 1577 transitions, 44579 flow [2024-11-10 18:22:44,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.578947368421053) internal successors, (163), 19 states have internal predecessors, (163), 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 18:22:44,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:44,449 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:44,464 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 18:22:44,650 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,SelfDestructingSolverStorable13 [2024-11-10 18:22:44,651 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:22:44,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1712662433, now seen corresponding path program 12 times [2024-11-10 18:22:44,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:44,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065537196] [2024-11-10 18:22:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:44,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065537196] [2024-11-10 18:22:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065537196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:22:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790955028] [2024-11-10 18:22:44,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 18:22:44,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:22:44,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:44,833 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:22:44,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 18:22:44,872 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 18:22:44,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:22:44,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:22:44,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:22:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:44,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:22:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:22:45,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790955028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:22:45,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:22:45,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 18:22:45,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413913169] [2024-11-10 18:22:45,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:22:45,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 18:22:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 18:22:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-10 18:22:45,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:22:45,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 1577 transitions, 44579 flow. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 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 18:22:45,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:45,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:22:45,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:51,309 INFO L124 PetriNetUnfolderBase]: 7033/12818 cut-off events. [2024-11-10 18:22:51,309 INFO L125 PetriNetUnfolderBase]: For 593242/593242 co-relation queries the response was YES. [2024-11-10 18:22:51,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133746 conditions, 12818 events. 7033/12818 cut-off events. For 593242/593242 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 100037 event pairs, 459 based on Foata normal form. 60/12877 useless extension candidates. Maximal degree in co-relation 133604. Up to 6812 conditions per place. [2024-11-10 18:22:51,563 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 931 selfloop transitions, 951 changer transitions 24/1909 dead transitions. [2024-11-10 18:22:51,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 1909 transitions, 56498 flow [2024-11-10 18:22:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 18:22:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 18:22:51,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 333 transitions. [2024-11-10 18:22:51,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4100985221674877 [2024-11-10 18:22:51,566 INFO L175 Difference]: Start difference. First operand has 399 places, 1577 transitions, 44579 flow. Second operand 28 states and 333 transitions. [2024-11-10 18:22:51,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 1909 transitions, 56498 flow [2024-11-10 18:23:00,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1909 transitions, 55459 flow, removed 170 selfloop flow, removed 12 redundant places. [2024-11-10 18:23:00,846 INFO L231 Difference]: Finished difference. Result has 428 places, 1736 transitions, 51953 flow [2024-11-10 18:23:00,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=43641, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=805, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=51953, PETRI_PLACES=428, PETRI_TRANSITIONS=1736} [2024-11-10 18:23:00,849 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 399 predicate places. [2024-11-10 18:23:00,849 INFO L471 AbstractCegarLoop]: Abstraction has has 428 places, 1736 transitions, 51953 flow [2024-11-10 18:23:00,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 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 18:23:00,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:23:00,850 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:23:00,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 18:23:01,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 18:23:01,054 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:23:01,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:23:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash -200617531, now seen corresponding path program 13 times [2024-11-10 18:23:01,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:23:01,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701687369] [2024-11-10 18:23:01,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:23:01,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:23:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:23:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:23:01,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:23:01,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701687369] [2024-11-10 18:23:01,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701687369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:23:01,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190230070] [2024-11-10 18:23:01,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 18:23:01,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:23:01,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:23:01,136 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:23:01,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 18:23:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:23:01,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:23:01,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:23:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:23:01,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:23:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:23:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190230070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:23:01,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:23:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-10 18:23:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549682122] [2024-11-10 18:23:01,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:23:01,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:23:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:23:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:23:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:23:01,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:23:01,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 1736 transitions, 51953 flow. Second operand has 19 states, 19 states have (on average 8.526315789473685) internal successors, (162), 19 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:23:01,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:23:01,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:23:01,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:23:08,562 INFO L124 PetriNetUnfolderBase]: 7115/12948 cut-off events. [2024-11-10 18:23:08,563 INFO L125 PetriNetUnfolderBase]: For 661107/661107 co-relation queries the response was YES. [2024-11-10 18:23:08,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142461 conditions, 12948 events. 7115/12948 cut-off events. For 661107/661107 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 100154 event pairs, 543 based on Foata normal form. 16/12963 useless extension candidates. Maximal degree in co-relation 142308. Up to 7702 conditions per place. [2024-11-10 18:23:09,041 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 919 selfloop transitions, 952 changer transitions 5/1879 dead transitions. [2024-11-10 18:23:09,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1879 transitions, 59372 flow [2024-11-10 18:23:09,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 18:23:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 18:23:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 257 transitions. [2024-11-10 18:23:09,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40282131661442006 [2024-11-10 18:23:09,042 INFO L175 Difference]: Start difference. First operand has 428 places, 1736 transitions, 51953 flow. Second operand 22 states and 257 transitions. [2024-11-10 18:23:09,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1879 transitions, 59372 flow [2024-11-10 18:23:18,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1879 transitions, 58917 flow, removed 165 selfloop flow, removed 7 redundant places. [2024-11-10 18:23:18,534 INFO L231 Difference]: Finished difference. Result has 448 places, 1797 transitions, 57069 flow [2024-11-10 18:23:18,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=51476, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=890, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=57069, PETRI_PLACES=448, PETRI_TRANSITIONS=1797} [2024-11-10 18:23:18,536 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 419 predicate places. [2024-11-10 18:23:18,536 INFO L471 AbstractCegarLoop]: Abstraction has has 448 places, 1797 transitions, 57069 flow [2024-11-10 18:23:18,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.526315789473685) internal successors, (162), 19 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:23:18,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:23:18,537 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:23:18,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 18:23:18,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 18:23:18,737 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:23:18,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:23:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash 442430481, now seen corresponding path program 14 times [2024-11-10 18:23:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:23:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781841534] [2024-11-10 18:23:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:23:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:23:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:23:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:23:18,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:23:18,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781841534] [2024-11-10 18:23:18,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781841534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:23:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902945530] [2024-11-10 18:23:18,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:23:18,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:23:18,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:23:18,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:23:18,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 18:23:18,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:23:18,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:23:18,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:23:18,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:23:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:23:18,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:23:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:23:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902945530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:23:19,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:23:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-10 18:23:19,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579635306] [2024-11-10 18:23:19,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:23:19,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:23:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:23:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:23:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:23:19,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 18:23:19,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 1797 transitions, 57069 flow. Second operand has 19 states, 19 states have (on average 8.631578947368421) internal successors, (164), 19 states have internal predecessors, (164), 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 18:23:19,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:23:19,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 18:23:19,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:23:27,342 INFO L124 PetriNetUnfolderBase]: 7676/13914 cut-off events. [2024-11-10 18:23:27,342 INFO L125 PetriNetUnfolderBase]: For 787935/787947 co-relation queries the response was YES. [2024-11-10 18:23:27,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161822 conditions, 13914 events. 7676/13914 cut-off events. For 787935/787947 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 108648 event pairs, 418 based on Foata normal form. 101/14014 useless extension candidates. Maximal degree in co-relation 161662. Up to 5683 conditions per place. [2024-11-10 18:23:27,591 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 775 selfloop transitions, 1267 changer transitions 12/2057 dead transitions. [2024-11-10 18:23:27,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 2057 transitions, 67994 flow [2024-11-10 18:23:27,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 18:23:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 18:23:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 315 transitions. [2024-11-10 18:23:27,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4177718832891247 [2024-11-10 18:23:27,596 INFO L175 Difference]: Start difference. First operand has 448 places, 1797 transitions, 57069 flow. Second operand 26 states and 315 transitions. [2024-11-10 18:23:27,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 2057 transitions, 67994 flow