./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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-simple-queue.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 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:55:54,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:55:54,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:55:55,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:55:55,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:55:55,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:55:55,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:55:55,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:55:55,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:55:55,019 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:55:55,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:55:55,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:55:55,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:55:55,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:55:55,021 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:55:55,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:55:55,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:55:55,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:55:55,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:55:55,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:55:55,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:55:55,023 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:55:55,023 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:55:55,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:55:55,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:55:55,024 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:55:55,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:55:55,024 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:55:55,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:55:55,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:55:55,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:55:55,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:55:55,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:55:55,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:55:55,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:55:55,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:55:55,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:55:55,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:55:55,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:55:55,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:55:55,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:55:55,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:55:55,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-11-09 10:55:55,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:55:55,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:55:55,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:55:55,320 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:55:55,321 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:55:55,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-09 10:55:56,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:55:56,867 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:55:56,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-09 10:55:56,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4404b58c/3d4fff0e073a44b08c695e69789a6f36/FLAG8fe45546b [2024-11-09 10:55:56,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4404b58c/3d4fff0e073a44b08c695e69789a6f36 [2024-11-09 10:55:56,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:55:56,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:55:56,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:55:56,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:55:56,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:55:56,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:55:56" (1/1) ... [2024-11-09 10:55:56,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b68c035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:56, skipping insertion in model container [2024-11-09 10:55:56,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:55:56" (1/1) ... [2024-11-09 10:55:56,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:55:57,259 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:55:57,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:55:57,267 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:55:57,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:55:57,296 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:55:57,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57 WrapperNode [2024-11-09 10:55:57,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:55:57,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:55:57,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:55:57,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:55:57,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,329 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 127 [2024-11-09 10:55:57,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:55:57,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:55:57,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:55:57,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:55:57,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,360 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 10:55:57,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:55:57,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:55:57,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:55:57,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:55:57,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (1/1) ... [2024-11-09 10:55:57,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:55:57,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:55:57,407 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) [2024-11-09 10:55:57,412 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 [2024-11-09 10:55:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:55:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:55:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:55:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:55:57,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:55:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:55:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:55:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:55:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:55:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 10:55:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 10:55:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:55:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:55:57,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:55:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:55:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:55:57,449 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:55:57,567 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:55:57,578 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:55:57,809 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:55:57,810 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:55:57,951 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:55:57,951 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 10:55:57,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:55:57 BoogieIcfgContainer [2024-11-09 10:55:57,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:55:57,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:55:57,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:55:57,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:55:57,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:55:56" (1/3) ... [2024-11-09 10:55:57,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73393337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:55:57, skipping insertion in model container [2024-11-09 10:55:57,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:55:57" (2/3) ... [2024-11-09 10:55:57,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73393337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:55:57, skipping insertion in model container [2024-11-09 10:55:57,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:55:57" (3/3) ... [2024-11-09 10:55:57,961 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-11-09 10:55:57,976 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:55:57,976 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 10:55:57,976 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:55:58,020 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:55:58,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-11-09 10:55:58,064 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-11-09 10:55:58,064 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:55:58,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-09 10:55:58,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-11-09 10:55:58,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-11-09 10:55:58,079 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:55:58,087 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;@b6860d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:55:58,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 10:55:58,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:55:58,090 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 10:55:58,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:55:58,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:58,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:55:58,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:55:58,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash 406284, now seen corresponding path program 1 times [2024-11-09 10:55:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309235600] [2024-11-09 10:55:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:55:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309235600] [2024-11-09 10:55:58,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309235600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:58,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:58,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:55:58,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119570291] [2024-11-09 10:55:58,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:58,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:55:58,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:55:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:55:58,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 10:55:58,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-09 10:55:58,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:58,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 10:55:58,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:58,445 INFO L124 PetriNetUnfolderBase]: 212/371 cut-off events. [2024-11-09 10:55:58,445 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-09 10:55:58,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 371 events. 212/371 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1444 event pairs, 176 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 705. Up to 364 conditions per place. [2024-11-09 10:55:58,451 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-09 10:55:58,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2024-11-09 10:55:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:55:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:55:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-09 10:55:58,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-11-09 10:55:58,464 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 50 transitions. [2024-11-09 10:55:58,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2024-11-09 10:55:58,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:55:58,494 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-11-09 10:55:58,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-11-09 10:55:58,503 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-09 10:55:58,505 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-11-09 10:55:58,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-09 10:55:58,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:58,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:55:58,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:55:58,506 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:55:58,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:58,510 INFO L85 PathProgramCache]: Analyzing trace with hash 406285, now seen corresponding path program 1 times [2024-11-09 10:55:58,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:58,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007443941] [2024-11-09 10:55:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:58,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:55:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007443941] [2024-11-09 10:55:58,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007443941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:58,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:58,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:55:58,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646574377] [2024-11-09 10:55:58,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:58,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:55:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:55:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:55:58,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 10:55:58,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-09 10:55:58,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:58,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 10:55:58,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:58,920 INFO L124 PetriNetUnfolderBase]: 213/374 cut-off events. [2024-11-09 10:55:58,921 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 10:55:58,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 374 events. 213/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1462 event pairs, 176 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 737. Up to 369 conditions per place. [2024-11-09 10:55:58,924 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-09 10:55:58,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 132 flow [2024-11-09 10:55:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:55:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:55:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-09 10:55:58,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-11-09 10:55:58,927 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 58 transitions. [2024-11-09 10:55:58,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 132 flow [2024-11-09 10:55:58,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:55:58,929 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-11-09 10:55:58,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-11-09 10:55:58,931 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-09 10:55:58,931 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-11-09 10:55:58,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-09 10:55:58,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:58,932 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-09 10:55:58,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:55:58,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:55:58,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash 390452160, now seen corresponding path program 1 times [2024-11-09 10:55:58,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:58,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129663990] [2024-11-09 10:55:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:58,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:55:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129663990] [2024-11-09 10:55:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129663990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:55:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174553473] [2024-11-09 10:55:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:59,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:55:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:55:59,113 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) [2024-11-09 10:55:59,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:55:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:59,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:55:59,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:55:59,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:55:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:55:59,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:55:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:55:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174553473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:55:59,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:55:59,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:55:59,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058332773] [2024-11-09 10:55:59,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:55:59,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:59,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 10:55:59,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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) [2024-11-09 10:55:59,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:59,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 10:55:59,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:59,675 INFO L124 PetriNetUnfolderBase]: 214/376 cut-off events. [2024-11-09 10:55:59,676 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 10:55:59,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 376 events. 214/376 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1464 event pairs, 176 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 744. Up to 366 conditions per place. [2024-11-09 10:55:59,678 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 21 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2024-11-09 10:55:59,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 159 flow [2024-11-09 10:55:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:55:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:55:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-09 10:55:59,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30067567567567566 [2024-11-09 10:55:59,680 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 8 states and 89 transitions. [2024-11-09 10:55:59,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 159 flow [2024-11-09 10:55:59,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:55:59,681 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 114 flow [2024-11-09 10:55:59,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-09 10:55:59,682 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-09 10:55:59,682 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 114 flow [2024-11-09 10:55:59,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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) [2024-11-09 10:55:59,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:59,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:55:59,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:55:59,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:55:59,887 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:55:59,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1619625390, now seen corresponding path program 1 times [2024-11-09 10:55:59,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:59,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788015105] [2024-11-09 10:55:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:55:59,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:59,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788015105] [2024-11-09 10:55:59,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788015105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:59,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:59,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:55:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824523472] [2024-11-09 10:55:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:59,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:55:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:55:59,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:55:59,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-09 10:55:59,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2024-11-09 10:55:59,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:59,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-09 10:55:59,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:59,997 INFO L124 PetriNetUnfolderBase]: 166/295 cut-off events. [2024-11-09 10:55:59,997 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-09 10:55:59,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 295 events. 166/295 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1072 event pairs, 132 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 582. Up to 284 conditions per place. [2024-11-09 10:56:00,000 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-09 10:56:00,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 168 flow [2024-11-09 10:56:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:56:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:56:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-11-09 10:56:00,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-11-09 10:56:00,004 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 114 flow. Second operand 4 states and 53 transitions. [2024-11-09 10:56:00,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 168 flow [2024-11-09 10:56:00,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 126 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-09 10:56:00,005 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 76 flow [2024-11-09 10:56:00,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2024-11-09 10:56:00,006 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-11-09 10:56:00,006 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 76 flow [2024-11-09 10:56:00,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2024-11-09 10:56:00,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:00,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:00,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:56:00,006 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:00,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:00,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1619625391, now seen corresponding path program 1 times [2024-11-09 10:56:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:00,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664723161] [2024-11-09 10:56:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:00,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:00,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:00,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664723161] [2024-11-09 10:56:00,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664723161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:56:00,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:56:00,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:56:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106128014] [2024-11-09 10:56:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:56:00,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:56:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:56:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:56:00,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:00,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-09 10:56:00,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:00,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:00,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:00,170 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-11-09 10:56:00,171 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 10:56:00,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 434 events. 233/434 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1802 event pairs, 200 based on Foata normal form. 23/371 useless extension candidates. Maximal degree in co-relation 574. Up to 289 conditions per place. [2024-11-09 10:56:00,173 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-11-09 10:56:00,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 198 flow [2024-11-09 10:56:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:56:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:56:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-09 10:56:00,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-11-09 10:56:00,176 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 76 flow. Second operand 4 states and 77 transitions. [2024-11-09 10:56:00,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 198 flow [2024-11-09 10:56:00,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:56:00,178 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 86 flow [2024-11-09 10:56:00,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-11-09 10:56:00,179 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-09 10:56:00,179 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 86 flow [2024-11-09 10:56:00,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-09 10:56:00,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:00,179 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:00,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:56:00,180 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:00,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1730964254, now seen corresponding path program 1 times [2024-11-09 10:56:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867085718] [2024-11-09 10:56:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867085718] [2024-11-09 10:56:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867085718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:56:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:56:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:56:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719332793] [2024-11-09 10:56:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:56:00,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:56:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:56:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:56:00,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:00,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-09 10:56:00,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:00,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:00,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:00,414 INFO L124 PetriNetUnfolderBase]: 191/363 cut-off events. [2024-11-09 10:56:00,414 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:56:00,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 363 events. 191/363 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1467 event pairs, 162 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 472. Up to 348 conditions per place. [2024-11-09 10:56:00,415 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 23 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-09 10:56:00,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 132 flow [2024-11-09 10:56:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:56:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:56:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-09 10:56:00,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716216216216216 [2024-11-09 10:56:00,416 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 86 flow. Second operand 4 states and 55 transitions. [2024-11-09 10:56:00,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 132 flow [2024-11-09 10:56:00,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:56:00,417 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 81 flow [2024-11-09 10:56:00,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-09 10:56:00,418 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-09 10:56:00,418 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 81 flow [2024-11-09 10:56:00,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-09 10:56:00,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:00,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:00,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:56:00,418 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:00,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:00,419 INFO L85 PathProgramCache]: Analyzing trace with hash 861308056, now seen corresponding path program 1 times [2024-11-09 10:56:00,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:00,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181873140] [2024-11-09 10:56:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:00,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:00,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:00,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181873140] [2024-11-09 10:56:00,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181873140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:56:00,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:56:00,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:56:00,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797968778] [2024-11-09 10:56:00,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:56:00,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:56:00,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:00,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:56:00,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:56:00,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:00,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-09 10:56:00,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:00,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:00,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:00,493 INFO L124 PetriNetUnfolderBase]: 272/497 cut-off events. [2024-11-09 10:56:00,494 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-09 10:56:00,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 497 events. 272/497 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2045 event pairs, 150 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 751. Up to 315 conditions per place. [2024-11-09 10:56:00,495 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 34 selfloop transitions, 2 changer transitions 4/43 dead transitions. [2024-11-09 10:56:00,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 193 flow [2024-11-09 10:56:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:56:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:56:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-09 10:56:00,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-11-09 10:56:00,497 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 81 flow. Second operand 3 states and 59 transitions. [2024-11-09 10:56:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 193 flow [2024-11-09 10:56:00,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:56:00,498 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2024-11-09 10:56:00,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-09 10:56:00,498 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-09 10:56:00,499 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2024-11-09 10:56:00,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-09 10:56:00,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:00,499 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:00,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:56:00,499 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:00,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2034642354, now seen corresponding path program 1 times [2024-11-09 10:56:00,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:00,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284137903] [2024-11-09 10:56:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:00,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:56:00,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:00,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284137903] [2024-11-09 10:56:00,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284137903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:56:00,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:56:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:56:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349040213] [2024-11-09 10:56:00,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:56:00,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:56:00,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:00,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:56:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:56:00,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:00,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-09 10:56:00,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:00,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:00,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:00,610 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-11-09 10:56:00,610 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-09 10:56:00,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 452 events. 252/452 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1685 event pairs, 113 based on Foata normal form. 11/392 useless extension candidates. Maximal degree in co-relation 983. Up to 306 conditions per place. [2024-11-09 10:56:00,612 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 33 selfloop transitions, 2 changer transitions 6/44 dead transitions. [2024-11-09 10:56:00,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 199 flow [2024-11-09 10:56:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:56:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:56:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-09 10:56:00,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-11-09 10:56:00,614 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 3 states and 60 transitions. [2024-11-09 10:56:00,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 199 flow [2024-11-09 10:56:00,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:56:00,615 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 96 flow [2024-11-09 10:56:00,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-11-09 10:56:00,616 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-09 10:56:00,616 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 96 flow [2024-11-09 10:56:00,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-09 10:56:00,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:00,617 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, 1, 1] [2024-11-09 10:56:00,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:56:00,617 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:00,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash -400558460, now seen corresponding path program 1 times [2024-11-09 10:56:00,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:00,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460362829] [2024-11-09 10:56:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:00,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:00,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:00,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460362829] [2024-11-09 10:56:00,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460362829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:00,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725735213] [2024-11-09 10:56:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:00,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:00,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:00,977 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) [2024-11-09 10:56:00,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:56:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:01,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:56:01,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:01,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 10:56:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:01,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:01,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-09 10:56:01,518 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:56:01,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2024-11-09 10:56:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:01,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725735213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:01,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:01,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-09 10:56:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989362533] [2024-11-09 10:56:01,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:01,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:56:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:56:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:56:01,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:01,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 96 flow. Second operand has 16 states, 16 states have (on average 11.5625) internal successors, (185), 16 states have internal predecessors, (185), 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) [2024-11-09 10:56:01,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:01,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:01,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:02,279 INFO L124 PetriNetUnfolderBase]: 911/1624 cut-off events. [2024-11-09 10:56:02,279 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-11-09 10:56:02,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 1624 events. 911/1624 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8320 event pairs, 351 based on Foata normal form. 3/1376 useless extension candidates. Maximal degree in co-relation 2339. Up to 440 conditions per place. [2024-11-09 10:56:02,286 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 90 selfloop transitions, 18 changer transitions 39/150 dead transitions. [2024-11-09 10:56:02,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 150 transitions, 715 flow [2024-11-09 10:56:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:56:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:56:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2024-11-09 10:56:02,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-11-09 10:56:02,287 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 96 flow. Second operand 14 states and 260 transitions. [2024-11-09 10:56:02,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 150 transitions, 715 flow [2024-11-09 10:56:02,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 150 transitions, 702 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 10:56:02,290 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 214 flow [2024-11-09 10:56:02,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-09 10:56:02,291 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-09 10:56:02,291 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 214 flow [2024-11-09 10:56:02,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5625) internal successors, (185), 16 states have internal predecessors, (185), 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) [2024-11-09 10:56:02,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:02,292 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:02,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:56:02,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 10:56:02,493 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:02,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash 32256458, now seen corresponding path program 2 times [2024-11-09 10:56:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547898247] [2024-11-09 10:56:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 10:56:02,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:02,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547898247] [2024-11-09 10:56:02,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547898247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:02,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23637123] [2024-11-09 10:56:02,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:56:02,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:02,586 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) [2024-11-09 10:56:02,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:56:02,658 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:56:02,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:56:02,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:56:02,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 10:56:02,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:56:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23637123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:02,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 6 [2024-11-09 10:56:02,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364179731] [2024-11-09 10:56:02,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:02,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:56:02,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:56:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:56:02,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:02,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-11-09 10:56:02,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:02,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:02,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:03,000 INFO L124 PetriNetUnfolderBase]: 1628/2879 cut-off events. [2024-11-09 10:56:03,000 INFO L125 PetriNetUnfolderBase]: For 2371/2371 co-relation queries the response was YES. [2024-11-09 10:56:03,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 2879 events. 1628/2879 cut-off events. For 2371/2371 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16089 event pairs, 590 based on Foata normal form. 33/2464 useless extension candidates. Maximal degree in co-relation 6030. Up to 1080 conditions per place. [2024-11-09 10:56:03,011 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 62 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-11-09 10:56:03,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 532 flow [2024-11-09 10:56:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:56:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:56:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-09 10:56:03,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-11-09 10:56:03,013 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 214 flow. Second operand 4 states and 85 transitions. [2024-11-09 10:56:03,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 532 flow [2024-11-09 10:56:03,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 512 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 10:56:03,018 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 356 flow [2024-11-09 10:56:03,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-09 10:56:03,018 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-11-09 10:56:03,018 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 356 flow [2024-11-09 10:56:03,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-11-09 10:56:03,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:03,019 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:03,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:56:03,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:03,220 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:03,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1143417749, now seen corresponding path program 3 times [2024-11-09 10:56:03,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:03,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783254478] [2024-11-09 10:56:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:03,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:04,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:04,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783254478] [2024-11-09 10:56:04,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783254478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:04,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012765917] [2024-11-09 10:56:04,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:56:04,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:04,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:04,444 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) [2024-11-09 10:56:04,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:56:04,517 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:56:04,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:56:04,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:56:04,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 10:56:04,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:04,605 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:56:04,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-09 10:56:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 10:56:04,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012765917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:04,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:04,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 12 [2024-11-09 10:56:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359236160] [2024-11-09 10:56:04,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:04,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:56:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:56:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:56:04,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:04,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 356 flow. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 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) [2024-11-09 10:56:04,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:04,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:04,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:05,589 INFO L124 PetriNetUnfolderBase]: 2506/4410 cut-off events. [2024-11-09 10:56:05,589 INFO L125 PetriNetUnfolderBase]: For 6272/6272 co-relation queries the response was YES. [2024-11-09 10:56:05,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11664 conditions, 4410 events. 2506/4410 cut-off events. For 6272/6272 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 26586 event pairs, 648 based on Foata normal form. 3/3727 useless extension candidates. Maximal degree in co-relation 8550. Up to 1338 conditions per place. [2024-11-09 10:56:05,604 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 80 selfloop transitions, 31 changer transitions 21/135 dead transitions. [2024-11-09 10:56:05,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 135 transitions, 975 flow [2024-11-09 10:56:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:56:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:56:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-11-09 10:56:05,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4365904365904366 [2024-11-09 10:56:05,605 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 356 flow. Second operand 13 states and 210 transitions. [2024-11-09 10:56:05,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 135 transitions, 975 flow [2024-11-09 10:56:05,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 135 transitions, 927 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-11-09 10:56:05,616 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 543 flow [2024-11-09 10:56:05,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-09 10:56:05,617 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2024-11-09 10:56:05,617 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 543 flow [2024-11-09 10:56:05,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 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) [2024-11-09 10:56:05,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:05,617 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:05,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:56:05,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:05,821 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:05,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1691989562, now seen corresponding path program 4 times [2024-11-09 10:56:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:05,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242302903] [2024-11-09 10:56:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:06,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:06,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242302903] [2024-11-09 10:56:06,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242302903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:06,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661305588] [2024-11-09 10:56:06,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:56:06,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:06,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:06,221 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) [2024-11-09 10:56:06,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:56:06,281 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:56:06,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:56:06,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:56:06,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:06,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 10:56:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:06,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:06,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-09 10:56:06,749 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:56:06,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2024-11-09 10:56:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661305588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:06,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:06,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-09 10:56:06,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535517496] [2024-11-09 10:56:06,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:06,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:56:06,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:06,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:56:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:56:06,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:06,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 543 flow. Second operand has 25 states, 25 states have (on average 11.32) internal successors, (283), 25 states have internal predecessors, (283), 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) [2024-11-09 10:56:06,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:06,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:09,382 INFO L124 PetriNetUnfolderBase]: 5504/9603 cut-off events. [2024-11-09 10:56:09,382 INFO L125 PetriNetUnfolderBase]: For 17828/17828 co-relation queries the response was YES. [2024-11-09 10:56:09,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25850 conditions, 9603 events. 5504/9603 cut-off events. For 17828/17828 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 63129 event pairs, 1215 based on Foata normal form. 68/8182 useless extension candidates. Maximal degree in co-relation 16602. Up to 1725 conditions per place. [2024-11-09 10:56:09,417 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 207 selfloop transitions, 76 changer transitions 54/340 dead transitions. [2024-11-09 10:56:09,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 340 transitions, 2464 flow [2024-11-09 10:56:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 10:56:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 10:56:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 506 transitions. [2024-11-09 10:56:09,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525987525987526 [2024-11-09 10:56:09,419 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 543 flow. Second operand 26 states and 506 transitions. [2024-11-09 10:56:09,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 340 transitions, 2464 flow [2024-11-09 10:56:09,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 340 transitions, 2394 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-09 10:56:09,436 INFO L231 Difference]: Finished difference. Result has 102 places, 112 transitions, 1433 flow [2024-11-09 10:56:09,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1433, PETRI_PLACES=102, PETRI_TRANSITIONS=112} [2024-11-09 10:56:09,437 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2024-11-09 10:56:09,438 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 112 transitions, 1433 flow [2024-11-09 10:56:09,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.32) internal successors, (283), 25 states have internal predecessors, (283), 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) [2024-11-09 10:56:09,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:09,439 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:09,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:56:09,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 10:56:09,643 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:09,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1412872395, now seen corresponding path program 5 times [2024-11-09 10:56:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737246896] [2024-11-09 10:56:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737246896] [2024-11-09 10:56:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737246896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727800920] [2024-11-09 10:56:10,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:56:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:10,242 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) [2024-11-09 10:56:10,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:56:10,312 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 10:56:10,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:56:10,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 10:56:10,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:56:10,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:10,430 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:56:10,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-09 10:56:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 10:56:10,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727800920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:10,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:10,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 15 [2024-11-09 10:56:10,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459066434] [2024-11-09 10:56:10,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:10,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:56:10,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:56:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:56:10,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:10,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 112 transitions, 1433 flow. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:56:10,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:10,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:10,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:11,750 INFO L124 PetriNetUnfolderBase]: 5973/10402 cut-off events. [2024-11-09 10:56:11,750 INFO L125 PetriNetUnfolderBase]: For 41918/41918 co-relation queries the response was YES. [2024-11-09 10:56:11,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31637 conditions, 10402 events. 5973/10402 cut-off events. For 41918/41918 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 69400 event pairs, 1721 based on Foata normal form. 7/8792 useless extension candidates. Maximal degree in co-relation 28712. Up to 2975 conditions per place. [2024-11-09 10:56:11,800 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 119 selfloop transitions, 67 changer transitions 45/234 dead transitions. [2024-11-09 10:56:11,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 234 transitions, 2341 flow [2024-11-09 10:56:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:56:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:56:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 284 transitions. [2024-11-09 10:56:11,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5117117117117117 [2024-11-09 10:56:11,802 INFO L175 Difference]: Start difference. First operand has 102 places, 112 transitions, 1433 flow. Second operand 15 states and 284 transitions. [2024-11-09 10:56:11,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 234 transitions, 2341 flow [2024-11-09 10:56:11,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 234 transitions, 2072 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-11-09 10:56:11,899 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 1540 flow [2024-11-09 10:56:11,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1540, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2024-11-09 10:56:11,900 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 82 predicate places. [2024-11-09 10:56:11,900 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 1540 flow [2024-11-09 10:56:11,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:56:11,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:11,901 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:11,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:56:12,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:12,105 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:12,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1887982735, now seen corresponding path program 6 times [2024-11-09 10:56:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:12,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852841792] [2024-11-09 10:56:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:12,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:56:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852841792] [2024-11-09 10:56:12,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852841792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420217316] [2024-11-09 10:56:12,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:56:12,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:12,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:12,261 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) [2024-11-09 10:56:12,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:56:12,411 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:56:12,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:56:12,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:56:12,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 10:56:12,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:56:12,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420217316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:12,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:12,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 6] total 14 [2024-11-09 10:56:12,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020103080] [2024-11-09 10:56:12,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:12,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:56:12,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:56:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:56:12,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:12,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 1540 flow. Second operand has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 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) [2024-11-09 10:56:12,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:12,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:12,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:14,354 INFO L124 PetriNetUnfolderBase]: 8576/14925 cut-off events. [2024-11-09 10:56:14,354 INFO L125 PetriNetUnfolderBase]: For 71607/71607 co-relation queries the response was YES. [2024-11-09 10:56:14,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46529 conditions, 14925 events. 8576/14925 cut-off events. For 71607/71607 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 105274 event pairs, 1800 based on Foata normal form. 77/12682 useless extension candidates. Maximal degree in co-relation 41365. Up to 2700 conditions per place. [2024-11-09 10:56:14,412 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 148 selfloop transitions, 109 changer transitions 6/266 dead transitions. [2024-11-09 10:56:14,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 266 transitions, 3245 flow [2024-11-09 10:56:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:56:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:56:14,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 258 transitions. [2024-11-09 10:56:14,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363825363825364 [2024-11-09 10:56:14,416 INFO L175 Difference]: Start difference. First operand has 118 places, 121 transitions, 1540 flow. Second operand 13 states and 258 transitions. [2024-11-09 10:56:14,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 266 transitions, 3245 flow [2024-11-09 10:56:14,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 3055 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-11-09 10:56:14,504 INFO L231 Difference]: Finished difference. Result has 124 places, 156 transitions, 2289 flow [2024-11-09 10:56:14,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2289, PETRI_PLACES=124, PETRI_TRANSITIONS=156} [2024-11-09 10:56:14,505 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2024-11-09 10:56:14,506 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 156 transitions, 2289 flow [2024-11-09 10:56:14,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 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) [2024-11-09 10:56:14,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:14,506 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:14,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 10:56:14,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:14,707 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:14,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:14,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1613619018, now seen corresponding path program 7 times [2024-11-09 10:56:14,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:14,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589323339] [2024-11-09 10:56:14,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:14,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 10:56:14,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:14,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589323339] [2024-11-09 10:56:14,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589323339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:14,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18050889] [2024-11-09 10:56:14,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:56:14,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:14,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:14,809 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) [2024-11-09 10:56:14,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:56:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:14,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:56:14,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 10:56:14,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 10:56:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18050889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:14,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:14,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 10:56:14,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674601191] [2024-11-09 10:56:14,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:14,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:56:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:56:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:56:14,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:14,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 156 transitions, 2289 flow. Second operand has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 12 states have internal predecessors, (145), 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) [2024-11-09 10:56:14,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:14,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:14,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:16,244 INFO L124 PetriNetUnfolderBase]: 6687/11672 cut-off events. [2024-11-09 10:56:16,245 INFO L125 PetriNetUnfolderBase]: For 63989/63989 co-relation queries the response was YES. [2024-11-09 10:56:16,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37701 conditions, 11672 events. 6687/11672 cut-off events. For 63989/63989 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 81198 event pairs, 5874 based on Foata normal form. 22/9884 useless extension candidates. Maximal degree in co-relation 34567. Up to 11228 conditions per place. [2024-11-09 10:56:16,297 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 115 selfloop transitions, 11 changer transitions 30/159 dead transitions. [2024-11-09 10:56:16,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 159 transitions, 2282 flow [2024-11-09 10:56:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:56:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:56:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-11-09 10:56:16,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-11-09 10:56:16,298 INFO L175 Difference]: Start difference. First operand has 124 places, 156 transitions, 2289 flow. Second operand 7 states and 112 transitions. [2024-11-09 10:56:16,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 159 transitions, 2282 flow [2024-11-09 10:56:16,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 159 transitions, 2003 flow, removed 120 selfloop flow, removed 7 redundant places. [2024-11-09 10:56:16,592 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 1611 flow [2024-11-09 10:56:16,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1611, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2024-11-09 10:56:16,594 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 87 predicate places. [2024-11-09 10:56:16,594 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 1611 flow [2024-11-09 10:56:16,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 12 states have internal predecessors, (145), 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) [2024-11-09 10:56:16,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:16,595 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:16,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 10:56:16,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 10:56:16,799 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:16,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1731408309, now seen corresponding path program 8 times [2024-11-09 10:56:16,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:16,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506797264] [2024-11-09 10:56:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:16,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:56:16,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506797264] [2024-11-09 10:56:16,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506797264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280263347] [2024-11-09 10:56:16,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:56:16,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:16,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:16,944 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) [2024-11-09 10:56:16,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:56:17,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:56:17,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:56:17,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 10:56:17,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:56:17,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:56:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280263347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:17,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:17,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-09 10:56:17,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056457444] [2024-11-09 10:56:17,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:17,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 10:56:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 10:56:17,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-11-09 10:56:17,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:17,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 1611 flow. Second operand has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 22 states have internal predecessors, (259), 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) [2024-11-09 10:56:17,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:17,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:17,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:18,619 INFO L124 PetriNetUnfolderBase]: 4790/8381 cut-off events. [2024-11-09 10:56:18,619 INFO L125 PetriNetUnfolderBase]: For 23348/23348 co-relation queries the response was YES. [2024-11-09 10:56:18,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24497 conditions, 8381 events. 4790/8381 cut-off events. For 23348/23348 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 54965 event pairs, 1942 based on Foata normal form. 52/7133 useless extension candidates. Maximal degree in co-relation 24459. Up to 6755 conditions per place. [2024-11-09 10:56:18,653 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 81 selfloop transitions, 14 changer transitions 109/207 dead transitions. [2024-11-09 10:56:18,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 207 transitions, 1881 flow [2024-11-09 10:56:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:56:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:56:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 269 transitions. [2024-11-09 10:56:18,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846846846846847 [2024-11-09 10:56:18,654 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 1611 flow. Second operand 15 states and 269 transitions. [2024-11-09 10:56:18,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 207 transitions, 1881 flow [2024-11-09 10:56:18,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 207 transitions, 1819 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-11-09 10:56:18,715 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 1092 flow [2024-11-09 10:56:18,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1092, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2024-11-09 10:56:18,716 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2024-11-09 10:56:18,716 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 1092 flow [2024-11-09 10:56:18,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 22 states have internal predecessors, (259), 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) [2024-11-09 10:56:18,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:56:18,716 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:18,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 10:56:18,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 10:56:18,917 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:56:18,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:56:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1950046164, now seen corresponding path program 9 times [2024-11-09 10:56:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:56:18,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859055495] [2024-11-09 10:56:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:56:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:56:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:56:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:56:19,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:56:19,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859055495] [2024-11-09 10:56:19,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859055495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:56:19,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618510367] [2024-11-09 10:56:19,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:56:19,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:56:19,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:56:19,525 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) [2024-11-09 10:56:19,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:56:19,855 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 10:56:19,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:56:19,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 10:56:19,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:56:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 10:56:20,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:56:20,255 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:56:20,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-09 10:56:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 10:56:20,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618510367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:56:20,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:56:20,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2024-11-09 10:56:20,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490415652] [2024-11-09 10:56:20,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:56:20,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:56:20,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:56:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:56:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:56:20,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-09 10:56:20,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 1092 flow. Second operand has 25 states, 25 states have (on average 11.96) internal successors, (299), 25 states have internal predecessors, (299), 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) [2024-11-09 10:56:20,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:56:20,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-09 10:56:20,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:56:27,898 INFO L124 PetriNetUnfolderBase]: 10771/18504 cut-off events. [2024-11-09 10:56:27,899 INFO L125 PetriNetUnfolderBase]: For 48764/48764 co-relation queries the response was YES. [2024-11-09 10:56:27,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53376 conditions, 18504 events. 10771/18504 cut-off events. For 48764/48764 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 129947 event pairs, 1253 based on Foata normal form. 59/15707 useless extension candidates. Maximal degree in co-relation 53342. Up to 3350 conditions per place. [2024-11-09 10:56:27,946 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 0 selfloop transitions, 0 changer transitions 571/571 dead transitions. [2024-11-09 10:56:27,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 571 transitions, 4599 flow [2024-11-09 10:56:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 10:56:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-09 10:56:27,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 805 transitions. [2024-11-09 10:56:27,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5578655578655579 [2024-11-09 10:56:27,948 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 1092 flow. Second operand 39 states and 805 transitions. [2024-11-09 10:56:27,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 571 transitions, 4599 flow [2024-11-09 10:56:27,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 571 transitions, 4239 flow, removed 111 selfloop flow, removed 16 redundant places. [2024-11-09 10:56:27,989 INFO L231 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2024-11-09 10:56:27,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2024-11-09 10:56:27,989 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 82 predicate places. [2024-11-09 10:56:27,990 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2024-11-09 10:56:27,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.96) internal successors, (299), 25 states have internal predecessors, (299), 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) [2024-11-09 10:56:27,992 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-09 10:56:27,992 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-09 10:56:27,992 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (7 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-09 10:56:27,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-09 10:56:27,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-09 10:56:27,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-09 10:56:28,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 10:56:28,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 10:56:28,198 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:56:28,202 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 10:56:28,202 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 10:56:28,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:56:28 BasicIcfg [2024-11-09 10:56:28,205 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 10:56:28,206 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 10:56:28,206 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 10:56:28,206 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 10:56:28,206 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:55:57" (3/4) ... [2024-11-09 10:56:28,207 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 10:56:28,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 10:56:28,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 10:56:28,212 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2024-11-09 10:56:28,213 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-09 10:56:28,213 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-09 10:56:28,213 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 10:56:28,283 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 10:56:28,283 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 10:56:28,283 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 10:56:28,284 INFO L158 Benchmark]: Toolchain (without parser) took 31344.57ms. Allocated memory was 134.2MB in the beginning and 8.2GB in the end (delta: 8.1GB). Free memory was 63.0MB in the beginning and 7.5GB in the end (delta: -7.5GB). Peak memory consumption was 615.2MB. Max. memory is 16.1GB. [2024-11-09 10:56:28,284 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory was 86.1MB in the beginning and 85.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:56:28,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.51ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 62.8MB in the beginning and 159.7MB in the end (delta: -96.9MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2024-11-09 10:56:28,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.72ms. Allocated memory is still 192.9MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 10:56:28,285 INFO L158 Benchmark]: Boogie Preprocessor took 43.24ms. Allocated memory is still 192.9MB. Free memory was 157.6MB in the beginning and 155.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 10:56:28,285 INFO L158 Benchmark]: RCFGBuilder took 575.21ms. Allocated memory is still 192.9MB. Free memory was 155.6MB in the beginning and 115.7MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-11-09 10:56:28,285 INFO L158 Benchmark]: TraceAbstraction took 30251.63ms. Allocated memory was 192.9MB in the beginning and 8.2GB in the end (delta: 8.0GB). Free memory was 115.7MB in the beginning and 7.5GB in the end (delta: -7.4GB). Peak memory consumption was 904.2MB. Max. memory is 16.1GB. [2024-11-09 10:56:28,285 INFO L158 Benchmark]: Witness Printer took 77.88ms. Allocated memory is still 8.2GB. Free memory was 7.5GB in the beginning and 7.5GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 10:56:28,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory was 86.1MB in the beginning and 85.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.51ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 62.8MB in the beginning and 159.7MB in the end (delta: -96.9MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.72ms. Allocated memory is still 192.9MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.24ms. Allocated memory is still 192.9MB. Free memory was 157.6MB in the beginning and 155.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 575.21ms. Allocated memory is still 192.9MB. Free memory was 155.6MB in the beginning and 115.7MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 30251.63ms. Allocated memory was 192.9MB in the beginning and 8.2GB in the end (delta: 8.0GB). Free memory was 115.7MB in the beginning and 7.5GB in the end (delta: -7.4GB). Peak memory consumption was 904.2MB. Max. memory is 16.1GB. * Witness Printer took 77.88ms. Allocated memory is still 8.2GB. Free memory was 7.5GB in the beginning and 7.5GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.2s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2441 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2399 mSDsluCounter, 619 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 618 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5888 IncrementalHoareTripleChecker+Invalid, 6055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 1 mSDtfsCounter, 5888 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 557 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2289occurred in iteration=14, InterpolantAutomatonStates: 179, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 712 NumberOfCodeBlocks, 706 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 996 ConstructedInterpolants, 20 QuantifiedInterpolants, 9207 SizeOfPredicates, 59 NumberOfNonLiveVariables, 1804 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 302/637 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 10:56:28,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE