./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 3061b6dc 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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:54:26,820 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:54:26,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:54:26,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:54:26,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:54:26,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:54:26,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:54:26,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:54:26,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:54:26,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:54:26,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:54:26,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:54:26,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:54:26,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:54:26,935 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:54:26,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:54:26,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:54:26,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:54:26,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:54:26,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:54:26,940 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:54:26,941 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:54:26,941 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:54:26,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:54:26,942 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:54:26,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:54:26,944 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:54:26,944 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:54:26,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:54:26,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:54:26,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:54:26,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:54:26,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:54:26,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:54:26,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:54:26,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:54:26,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:54:26,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:54:26,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:54:26,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:54:26,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:54:26,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:54:26,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-11-19 09:54:27,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:54:27,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:54:27,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:54:27,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:54:27,292 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:54:27,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-19 09:54:28,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:54:28,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:54:28,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-19 09:54:28,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7123e89e7/bc244053556a49f9ac61af23426cacab/FLAG2095f652d [2024-11-19 09:54:29,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7123e89e7/bc244053556a49f9ac61af23426cacab [2024-11-19 09:54:29,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:54:29,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:54:29,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:54:29,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:54:29,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:54:29,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b38ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29, skipping insertion in model container [2024-11-19 09:54:29,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,373 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:54:29,585 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 09:54:29,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:54:29,597 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:54:29,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:54:29,648 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:54:29,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29 WrapperNode [2024-11-19 09:54:29,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:54:29,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:54:29,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:54:29,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:54:29,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,690 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 127 [2024-11-19 09:54:29,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:54:29,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:54:29,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:54:29,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:54:29,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,732 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]. [2024-11-19 09:54:29,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:54:29,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:54:29,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:54:29,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:54:29,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (1/1) ... [2024-11-19 09:54:29,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:54:29,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:29,804 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) [2024-11-19 09:54:29,807 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 [2024-11-19 09:54:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:54:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:54:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:54:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:54:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:54:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:54:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:54:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:54:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:54:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:54:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:54:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:54:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:54:29,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:54:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:54:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:54:29,866 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:54:29,988 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:54:29,991 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:54:30,349 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:54:30,349 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:54:30,556 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:54:30,558 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:54:30,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:54:30 BoogieIcfgContainer [2024-11-19 09:54:30,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:54:30,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:54:30,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:54:30,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:54:30,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:54:29" (1/3) ... [2024-11-19 09:54:30,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73717e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:54:30, skipping insertion in model container [2024-11-19 09:54:30,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:54:29" (2/3) ... [2024-11-19 09:54:30,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73717e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:54:30, skipping insertion in model container [2024-11-19 09:54:30,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:54:30" (3/3) ... [2024-11-19 09:54:30,570 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-11-19 09:54:30,589 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:54:30,589 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 09:54:30,590 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:54:30,648 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:54:30,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-11-19 09:54:30,716 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-11-19 09:54:30,716 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:54:30,719 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. [2024-11-19 09:54:30,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-11-19 09:54:30,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-11-19 09:54:30,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:54:30,744 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;@682b5759, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:54:30,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-19 09:54:30,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:54:30,748 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-19 09:54:30,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:54:30,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:30,749 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:54:30,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:30,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash 406284, now seen corresponding path program 1 times [2024-11-19 09:54:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:30,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588976325] [2024-11-19 09:54:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588976325] [2024-11-19 09:54:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588976325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:31,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:31,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:54:31,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873930499] [2024-11-19 09:54:31,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:31,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:54:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:54:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:54:31,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 09:54:31,099 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) [2024-11-19 09:54:31,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:31,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 09:54:31,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:31,265 INFO L124 PetriNetUnfolderBase]: 212/371 cut-off events. [2024-11-19 09:54:31,265 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-19 09:54:31,268 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. [2024-11-19 09:54:31,274 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-19 09:54:31,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2024-11-19 09:54:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:54:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:54:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-19 09:54:31,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-11-19 09:54:31,291 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 50 transitions. [2024-11-19 09:54:31,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2024-11-19 09:54:31,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:54:31,299 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-11-19 09:54:31,302 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} [2024-11-19 09:54:31,308 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-19 09:54:31,309 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-11-19 09:54:31,309 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) [2024-11-19 09:54:31,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:31,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:54:31,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:54:31,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:31,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:31,312 INFO L85 PathProgramCache]: Analyzing trace with hash 406285, now seen corresponding path program 1 times [2024-11-19 09:54:31,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:31,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294130782] [2024-11-19 09:54:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:31,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:31,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294130782] [2024-11-19 09:54:31,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294130782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:31,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:31,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:54:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954657248] [2024-11-19 09:54:31,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:31,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:54:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:54:31,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:54:31,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 09:54:31,700 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) [2024-11-19 09:54:31,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:31,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 09:54:31,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:31,866 INFO L124 PetriNetUnfolderBase]: 213/374 cut-off events. [2024-11-19 09:54:31,866 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 09:54:31,868 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. [2024-11-19 09:54:31,872 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-19 09:54:31,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 132 flow [2024-11-19 09:54:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:54:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:54:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-19 09:54:31,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-11-19 09:54:31,874 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 58 transitions. [2024-11-19 09:54:31,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 132 flow [2024-11-19 09:54:31,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:54:31,877 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-11-19 09:54:31,877 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} [2024-11-19 09:54:31,878 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-19 09:54:31,878 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-11-19 09:54:31,879 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) [2024-11-19 09:54:31,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:31,879 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-19 09:54:31,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:54:31,879 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:31,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash 390452160, now seen corresponding path program 1 times [2024-11-19 09:54:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:31,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172975053] [2024-11-19 09:54:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172975053] [2024-11-19 09:54:32,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172975053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798436755] [2024-11-19 09:54:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:32,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:32,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:32,181 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) [2024-11-19 09:54:32,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:54:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:32,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:54:32,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:32,347 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 [2024-11-19 09:54:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:32,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798436755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:32,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:32,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-19 09:54:32,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894886501] [2024-11-19 09:54:32,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:32,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:54:32,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:54:32,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:54:32,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 09:54:32,734 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) [2024-11-19 09:54:32,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:32,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 09:54:32,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:33,018 INFO L124 PetriNetUnfolderBase]: 214/376 cut-off events. [2024-11-19 09:54:33,018 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 09:54:33,020 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. [2024-11-19 09:54:33,022 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 21 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2024-11-19 09:54:33,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 159 flow [2024-11-19 09:54:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:54:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:54:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-19 09:54:33,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30067567567567566 [2024-11-19 09:54:33,026 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 8 states and 89 transitions. [2024-11-19 09:54:33,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 159 flow [2024-11-19 09:54:33,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:54:33,029 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 114 flow [2024-11-19 09:54:33,029 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} [2024-11-19 09:54:33,030 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-19 09:54:33,031 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 114 flow [2024-11-19 09:54:33,031 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) [2024-11-19 09:54:33,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:33,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:33,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:54:33,232 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 [2024-11-19 09:54:33,232 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:33,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1619625390, now seen corresponding path program 1 times [2024-11-19 09:54:33,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:33,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710944481] [2024-11-19 09:54:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:33,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:33,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710944481] [2024-11-19 09:54:33,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710944481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:33,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:33,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:54:33,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455721068] [2024-11-19 09:54:33,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:33,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:54:33,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:54:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:54:33,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-19 09:54:33,308 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) [2024-11-19 09:54:33,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:33,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-19 09:54:33,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:33,388 INFO L124 PetriNetUnfolderBase]: 166/295 cut-off events. [2024-11-19 09:54:33,388 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-19 09:54:33,389 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. [2024-11-19 09:54:33,391 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-19 09:54:33,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 168 flow [2024-11-19 09:54:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:54:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:54:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-11-19 09:54:33,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-11-19 09:54:33,395 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 114 flow. Second operand 4 states and 53 transitions. [2024-11-19 09:54:33,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 168 flow [2024-11-19 09:54:33,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 126 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-19 09:54:33,397 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 76 flow [2024-11-19 09:54:33,397 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} [2024-11-19 09:54:33,398 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-11-19 09:54:33,398 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 76 flow [2024-11-19 09:54:33,398 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) [2024-11-19 09:54:33,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:33,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:33,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:54:33,399 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:33,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1619625391, now seen corresponding path program 1 times [2024-11-19 09:54:33,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342575158] [2024-11-19 09:54:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342575158] [2024-11-19 09:54:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342575158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:54:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617425995] [2024-11-19 09:54:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:33,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:54:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:33,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:54:33,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:54:33,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:33,475 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) [2024-11-19 09:54:33,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:33,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:33,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:33,605 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-11-19 09:54:33,605 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 09:54:33,606 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. [2024-11-19 09:54:33,608 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-11-19 09:54:33,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 198 flow [2024-11-19 09:54:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:54:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:54:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-19 09:54:33,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-11-19 09:54:33,609 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 76 flow. Second operand 4 states and 77 transitions. [2024-11-19 09:54:33,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 198 flow [2024-11-19 09:54:33,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:54:33,611 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 86 flow [2024-11-19 09:54:33,611 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} [2024-11-19 09:54:33,612 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-19 09:54:33,612 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 86 flow [2024-11-19 09:54:33,612 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) [2024-11-19 09:54:33,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:33,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:33,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:54:33,612 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:33,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1730964254, now seen corresponding path program 1 times [2024-11-19 09:54:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:33,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399185449] [2024-11-19 09:54:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:33,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:33,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399185449] [2024-11-19 09:54:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399185449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:33,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:33,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:54:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712103969] [2024-11-19 09:54:33,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:33,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:54:33,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:54:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:54:33,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:33,819 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) [2024-11-19 09:54:33,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:33,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:33,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:33,906 INFO L124 PetriNetUnfolderBase]: 191/363 cut-off events. [2024-11-19 09:54:33,907 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:54:33,908 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. [2024-11-19 09:54:33,910 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 23 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-19 09:54:33,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 132 flow [2024-11-19 09:54:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:54:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:54:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-19 09:54:33,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716216216216216 [2024-11-19 09:54:33,911 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 86 flow. Second operand 4 states and 55 transitions. [2024-11-19 09:54:33,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 132 flow [2024-11-19 09:54:33,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:54:33,914 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 81 flow [2024-11-19 09:54:33,914 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} [2024-11-19 09:54:33,915 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-19 09:54:33,915 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 81 flow [2024-11-19 09:54:33,917 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) [2024-11-19 09:54:33,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:33,917 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:33,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:54:33,917 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:33,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash 861308056, now seen corresponding path program 1 times [2024-11-19 09:54:33,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:33,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804852228] [2024-11-19 09:54:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:33,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804852228] [2024-11-19 09:54:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804852228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:33,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:33,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:54:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370320541] [2024-11-19 09:54:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:33,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:54:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:54:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:54:33,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:33,958 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) [2024-11-19 09:54:33,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:33,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:33,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:34,054 INFO L124 PetriNetUnfolderBase]: 272/497 cut-off events. [2024-11-19 09:54:34,055 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-19 09:54:34,056 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. [2024-11-19 09:54:34,058 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 34 selfloop transitions, 2 changer transitions 4/43 dead transitions. [2024-11-19 09:54:34,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 193 flow [2024-11-19 09:54:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:54:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:54:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-19 09:54:34,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-11-19 09:54:34,059 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 81 flow. Second operand 3 states and 59 transitions. [2024-11-19 09:54:34,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 193 flow [2024-11-19 09:54:34,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:54:34,060 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2024-11-19 09:54:34,060 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} [2024-11-19 09:54:34,061 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-19 09:54:34,061 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2024-11-19 09:54:34,061 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) [2024-11-19 09:54:34,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:34,062 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] [2024-11-19 09:54:34,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:54:34,062 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:34,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2034642354, now seen corresponding path program 1 times [2024-11-19 09:54:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:34,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977490222] [2024-11-19 09:54:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:34,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:54:34,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:34,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977490222] [2024-11-19 09:54:34,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977490222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:34,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:34,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:54:34,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525357689] [2024-11-19 09:54:34,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:34,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:54:34,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:54:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:54:34,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:34,133 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) [2024-11-19 09:54:34,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:34,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:34,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:34,210 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-11-19 09:54:34,210 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-19 09:54:34,211 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. [2024-11-19 09:54:34,212 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 33 selfloop transitions, 2 changer transitions 6/44 dead transitions. [2024-11-19 09:54:34,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 199 flow [2024-11-19 09:54:34,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:54:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:54:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-19 09:54:34,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-11-19 09:54:34,214 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 3 states and 60 transitions. [2024-11-19 09:54:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 199 flow [2024-11-19 09:54:34,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:54:34,215 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 96 flow [2024-11-19 09:54:34,216 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} [2024-11-19 09:54:34,216 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-19 09:54:34,216 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 96 flow [2024-11-19 09:54:34,216 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) [2024-11-19 09:54:34,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:34,217 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] [2024-11-19 09:54:34,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:54:34,217 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:34,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -400558460, now seen corresponding path program 1 times [2024-11-19 09:54:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:34,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315106728] [2024-11-19 09:54:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:34,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315106728] [2024-11-19 09:54:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315106728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135773846] [2024-11-19 09:54:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:54:34,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:34,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:34,636 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) [2024-11-19 09:54:34,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:54:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:34,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 09:54:34,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:34,773 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 [2024-11-19 09:54:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:34,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:35,385 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 [2024-11-19 09:54:35,409 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 09:54:35,410 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 [2024-11-19 09:54:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:35,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135773846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:35,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:35,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-19 09:54:35,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611653701] [2024-11-19 09:54:35,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:35,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:54:35,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:54:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:54:35,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:35,551 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) [2024-11-19 09:54:35,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:35,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:35,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:36,434 INFO L124 PetriNetUnfolderBase]: 911/1624 cut-off events. [2024-11-19 09:54:36,435 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-11-19 09:54:36,438 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. [2024-11-19 09:54:36,443 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 90 selfloop transitions, 18 changer transitions 39/150 dead transitions. [2024-11-19 09:54:36,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 150 transitions, 715 flow [2024-11-19 09:54:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 09:54:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 09:54:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2024-11-19 09:54:36,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-11-19 09:54:36,444 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 96 flow. Second operand 14 states and 260 transitions. [2024-11-19 09:54:36,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 150 transitions, 715 flow [2024-11-19 09:54:36,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 150 transitions, 702 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-19 09:54:36,451 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 214 flow [2024-11-19 09:54:36,452 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} [2024-11-19 09:54:36,452 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-19 09:54:36,452 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 214 flow [2024-11-19 09:54:36,453 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) [2024-11-19 09:54:36,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:36,453 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] [2024-11-19 09:54:36,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:54:36,658 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 [2024-11-19 09:54:36,659 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:36,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash 32256458, now seen corresponding path program 2 times [2024-11-19 09:54:36,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097083404] [2024-11-19 09:54:36,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:54:36,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:36,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:54:36,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 09:54:36,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:36,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097083404] [2024-11-19 09:54:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097083404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897903424] [2024-11-19 09:54:36,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:54:36,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:36,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:36,801 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) [2024-11-19 09:54:36,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:54:36,881 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:54:36,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:36,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:54:36,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 09:54:36,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:54:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897903424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:37,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:37,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 6 [2024-11-19 09:54:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041211319] [2024-11-19 09:54:37,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:37,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:54:37,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:54:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:54:37,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:37,036 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) [2024-11-19 09:54:37,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:37,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:37,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:37,354 INFO L124 PetriNetUnfolderBase]: 1628/2879 cut-off events. [2024-11-19 09:54:37,354 INFO L125 PetriNetUnfolderBase]: For 2371/2371 co-relation queries the response was YES. [2024-11-19 09:54:37,360 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. [2024-11-19 09:54:37,370 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 62 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-11-19 09:54:37,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 532 flow [2024-11-19 09:54:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:54:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:54:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-19 09:54:37,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-11-19 09:54:37,371 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 214 flow. Second operand 4 states and 85 transitions. [2024-11-19 09:54:37,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 532 flow [2024-11-19 09:54:37,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 512 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 09:54:37,378 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 356 flow [2024-11-19 09:54:37,378 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} [2024-11-19 09:54:37,379 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-11-19 09:54:37,379 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 356 flow [2024-11-19 09:54:37,379 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) [2024-11-19 09:54:37,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:37,379 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] [2024-11-19 09:54:37,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 09:54:37,583 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 [2024-11-19 09:54:37,584 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:37,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1143417749, now seen corresponding path program 3 times [2024-11-19 09:54:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301426949] [2024-11-19 09:54:37,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:54:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:37,622 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:54:37,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 09:54:37,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301426949] [2024-11-19 09:54:37,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301426949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230312922] [2024-11-19 09:54:37,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:54:37,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:37,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:37,697 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) [2024-11-19 09:54:37,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:54:37,780 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:54:37,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:37,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:54:37,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 09:54:37,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:37,850 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 09:54:37,851 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 [2024-11-19 09:54:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 09:54:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230312922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:37,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:37,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-19 09:54:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431245265] [2024-11-19 09:54:37,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:37,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:54:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:54:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:54:37,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:37,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-19 09:54:37,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:37,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:37,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:38,285 INFO L124 PetriNetUnfolderBase]: 2246/3945 cut-off events. [2024-11-19 09:54:38,285 INFO L125 PetriNetUnfolderBase]: For 5685/5685 co-relation queries the response was YES. [2024-11-19 09:54:38,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 3945 events. 2246/3945 cut-off events. For 5685/5685 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 22979 event pairs, 580 based on Foata normal form. 3/3331 useless extension candidates. Maximal degree in co-relation 7321. Up to 1316 conditions per place. [2024-11-19 09:54:38,308 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 65 selfloop transitions, 17 changer transitions 12/97 dead transitions. [2024-11-19 09:54:38,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 97 transitions, 747 flow [2024-11-19 09:54:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:54:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:54:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-11-19 09:54:38,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5513513513513514 [2024-11-19 09:54:38,310 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 356 flow. Second operand 5 states and 102 transitions. [2024-11-19 09:54:38,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 97 transitions, 747 flow [2024-11-19 09:54:38,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 707 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-19 09:54:38,324 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 446 flow [2024-11-19 09:54:38,324 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=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-11-19 09:54:38,324 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2024-11-19 09:54:38,325 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 446 flow [2024-11-19 09:54:38,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-19 09:54:38,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:38,325 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] [2024-11-19 09:54:38,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 09:54:38,525 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 [2024-11-19 09:54:38,526 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:38,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1691989562, now seen corresponding path program 4 times [2024-11-19 09:54:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952077312] [2024-11-19 09:54:38,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:54:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:38,554 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:54:38,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:54:38,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952077312] [2024-11-19 09:54:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952077312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474788531] [2024-11-19 09:54:38,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:54:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:38,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:38,760 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) [2024-11-19 09:54:38,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:54:38,853 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:54:38,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:38,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 09:54:38,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:38,934 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 [2024-11-19 09:54:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:39,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:39,452 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 [2024-11-19 09:54:39,463 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 09:54:39,464 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 [2024-11-19 09:54:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474788531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:39,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-19 09:54:39,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443522587] [2024-11-19 09:54:39,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:39,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 09:54:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 09:54:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2024-11-19 09:54:39,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:39,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 446 flow. Second operand has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 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) [2024-11-19 09:54:39,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:39,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:39,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:42,042 INFO L124 PetriNetUnfolderBase]: 8201/14162 cut-off events. [2024-11-19 09:54:42,043 INFO L125 PetriNetUnfolderBase]: For 28221/28221 co-relation queries the response was YES. [2024-11-19 09:54:42,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38780 conditions, 14162 events. 8201/14162 cut-off events. For 28221/28221 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 98652 event pairs, 1219 based on Foata normal form. 53/12026 useless extension candidates. Maximal degree in co-relation 23451. Up to 2550 conditions per place. [2024-11-19 09:54:42,120 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 181 selfloop transitions, 117 changer transitions 102/403 dead transitions. [2024-11-19 09:54:42,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 403 transitions, 3094 flow [2024-11-19 09:54:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 09:54:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 09:54:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 555 transitions. [2024-11-19 09:54:42,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-19 09:54:42,123 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 446 flow. Second operand 27 states and 555 transitions. [2024-11-19 09:54:42,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 403 transitions, 3094 flow [2024-11-19 09:54:42,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 403 transitions, 2987 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-19 09:54:42,218 INFO L231 Difference]: Finished difference. Result has 100 places, 152 transitions, 2118 flow [2024-11-19 09:54:42,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2118, PETRI_PLACES=100, PETRI_TRANSITIONS=152} [2024-11-19 09:54:42,219 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-19 09:54:42,219 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 152 transitions, 2118 flow [2024-11-19 09:54:42,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 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) [2024-11-19 09:54:42,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:42,220 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] [2024-11-19 09:54:42,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:54:42,424 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 [2024-11-19 09:54:42,425 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:42,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash 150783231, now seen corresponding path program 5 times [2024-11-19 09:54:42,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289514300] [2024-11-19 09:54:42,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:54:42,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:42,465 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 09:54:42,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 09:54:42,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289514300] [2024-11-19 09:54:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289514300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241194943] [2024-11-19 09:54:42,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:54:42,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:42,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:42,669 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) [2024-11-19 09:54:42,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:54:42,770 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 09:54:42,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:42,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:54:42,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 09:54:42,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 09:54:43,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241194943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:43,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:43,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-19 09:54:43,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281048404] [2024-11-19 09:54:43,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:43,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:54:43,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:54:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:54:43,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:43,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 152 transitions, 2118 flow. Second operand has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 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) [2024-11-19 09:54:43,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:43,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:43,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:44,149 INFO L124 PetriNetUnfolderBase]: 4797/8442 cut-off events. [2024-11-19 09:54:44,150 INFO L125 PetriNetUnfolderBase]: For 24410/24410 co-relation queries the response was YES. [2024-11-19 09:54:44,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23957 conditions, 8442 events. 4797/8442 cut-off events. For 24410/24410 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 55854 event pairs, 3702 based on Foata normal form. 104/7223 useless extension candidates. Maximal degree in co-relation 23898. Up to 6306 conditions per place. [2024-11-19 09:54:44,201 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 78 selfloop transitions, 10 changer transitions 55/146 dead transitions. [2024-11-19 09:54:44,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 146 transitions, 1710 flow [2024-11-19 09:54:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:54:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:54:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-11-19 09:54:44,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-11-19 09:54:44,204 INFO L175 Difference]: Start difference. First operand has 100 places, 152 transitions, 2118 flow. Second operand 9 states and 146 transitions. [2024-11-19 09:54:44,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 146 transitions, 1710 flow [2024-11-19 09:54:44,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 146 transitions, 1310 flow, removed 183 selfloop flow, removed 10 redundant places. [2024-11-19 09:54:44,394 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 792 flow [2024-11-19 09:54:44,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=792, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-19 09:54:44,395 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2024-11-19 09:54:44,395 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 792 flow [2024-11-19 09:54:44,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 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) [2024-11-19 09:54:44,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:44,395 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] [2024-11-19 09:54:44,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 09:54:44,596 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 [2024-11-19 09:54:44,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:44,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash 602004550, now seen corresponding path program 6 times [2024-11-19 09:54:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280117616] [2024-11-19 09:54:44,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:54:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:44,643 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:54:44,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 09:54:44,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:44,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280117616] [2024-11-19 09:54:44,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280117616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:44,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845178949] [2024-11-19 09:54:44,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:54:44,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:44,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:45,000 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) [2024-11-19 09:54:45,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:54:45,252 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:54:45,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:45,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 09:54:45,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:45,374 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 15 treesize of output 1 [2024-11-19 09:54:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:45,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:46,374 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 [2024-11-19 09:54:46,384 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 09:54:46,385 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 [2024-11-19 09:54:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845178949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:46,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:46,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-11-19 09:54:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148275635] [2024-11-19 09:54:46,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:46,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:54:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:54:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:54:46,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:46,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 792 flow. Second operand has 31 states, 31 states have (on average 11.290322580645162) internal successors, (350), 31 states have internal predecessors, (350), 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) [2024-11-19 09:54:46,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:46,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:46,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:49,728 INFO L124 PetriNetUnfolderBase]: 7004/12101 cut-off events. [2024-11-19 09:54:49,728 INFO L125 PetriNetUnfolderBase]: For 13721/13721 co-relation queries the response was YES. [2024-11-19 09:54:49,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30290 conditions, 12101 events. 7004/12101 cut-off events. For 13721/13721 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 80175 event pairs, 1874 based on Foata normal form. 22/10258 useless extension candidates. Maximal degree in co-relation 30223. Up to 3457 conditions per place. [2024-11-19 09:54:49,773 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 139 selfloop transitions, 36 changer transitions 256/434 dead transitions. [2024-11-19 09:54:49,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 434 transitions, 2993 flow [2024-11-19 09:54:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 09:54:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 09:54:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 592 transitions. [2024-11-19 09:54:49,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-19 09:54:49,776 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 792 flow. Second operand 31 states and 592 transitions. [2024-11-19 09:54:49,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 434 transitions, 2993 flow [2024-11-19 09:54:49,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 434 transitions, 2929 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-19 09:54:49,834 INFO L231 Difference]: Finished difference. Result has 125 places, 99 transitions, 1049 flow [2024-11-19 09:54:49,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1049, PETRI_PLACES=125, PETRI_TRANSITIONS=99} [2024-11-19 09:54:49,835 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 89 predicate places. [2024-11-19 09:54:49,835 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 99 transitions, 1049 flow [2024-11-19 09:54:49,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.290322580645162) internal successors, (350), 31 states have internal predecessors, (350), 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) [2024-11-19 09:54:49,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:49,836 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:49,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:54:50,040 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 [2024-11-19 09:54:50,041 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:50,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash -612301034, now seen corresponding path program 7 times [2024-11-19 09:54:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076309717] [2024-11-19 09:54:50,041 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:54:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:54:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076309717] [2024-11-19 09:54:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076309717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352104417] [2024-11-19 09:54:51,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:54:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:51,821 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) [2024-11-19 09:54:51,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:54:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:51,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 09:54:51,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:54:52,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:52,168 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-19 09:54:52,169 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 25 treesize of output 13 [2024-11-19 09:54:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-19 09:54:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352104417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:52,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 6] total 23 [2024-11-19 09:54:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093910363] [2024-11-19 09:54:52,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:52,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 09:54:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 09:54:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-19 09:54:52,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:52,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 99 transitions, 1049 flow. Second operand has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 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) [2024-11-19 09:54:52,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:52,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:52,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:53,811 INFO L124 PetriNetUnfolderBase]: 5277/9126 cut-off events. [2024-11-19 09:54:53,812 INFO L125 PetriNetUnfolderBase]: For 17450/17450 co-relation queries the response was YES. [2024-11-19 09:54:53,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24886 conditions, 9126 events. 5277/9126 cut-off events. For 17450/17450 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 58240 event pairs, 1168 based on Foata normal form. 2/7723 useless extension candidates. Maximal degree in co-relation 24619. Up to 1869 conditions per place. [2024-11-19 09:54:53,872 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 154 selfloop transitions, 66 changer transitions 39/262 dead transitions. [2024-11-19 09:54:53,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 262 transitions, 2376 flow [2024-11-19 09:54:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 09:54:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 09:54:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 309 transitions. [2024-11-19 09:54:53,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-11-19 09:54:53,875 INFO L175 Difference]: Start difference. First operand has 125 places, 99 transitions, 1049 flow. Second operand 18 states and 309 transitions. [2024-11-19 09:54:53,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 262 transitions, 2376 flow [2024-11-19 09:54:54,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 262 transitions, 2118 flow, removed 116 selfloop flow, removed 12 redundant places. [2024-11-19 09:54:54,040 INFO L231 Difference]: Finished difference. Result has 117 places, 120 transitions, 1342 flow [2024-11-19 09:54:54,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1342, PETRI_PLACES=117, PETRI_TRANSITIONS=120} [2024-11-19 09:54:54,041 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2024-11-19 09:54:54,041 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 120 transitions, 1342 flow [2024-11-19 09:54:54,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 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) [2024-11-19 09:54:54,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:54,042 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:54,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 09:54:54,246 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 [2024-11-19 09:54:54,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:54,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:54,248 INFO L85 PathProgramCache]: Analyzing trace with hash 567400016, now seen corresponding path program 8 times [2024-11-19 09:54:54,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:54,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459241476] [2024-11-19 09:54:54,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:54:54,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:54,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:54:54,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 09:54:54,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:54,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459241476] [2024-11-19 09:54:54,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459241476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:54,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277474394] [2024-11-19 09:54:54,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:54:54,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:54,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:54,411 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) [2024-11-19 09:54:54,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:54:54,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:54:54,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:54,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:54:54,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 09:54:54,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 09:54:54,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277474394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:54,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:54,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 12 [2024-11-19 09:54:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32763394] [2024-11-19 09:54:54,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:54,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:54:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:54:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:54:54,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:54,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 120 transitions, 1342 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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) [2024-11-19 09:54:54,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:54,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:54,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:56,298 INFO L124 PetriNetUnfolderBase]: 9135/15720 cut-off events. [2024-11-19 09:54:56,299 INFO L125 PetriNetUnfolderBase]: For 28696/28696 co-relation queries the response was YES. [2024-11-19 09:54:56,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42109 conditions, 15720 events. 9135/15720 cut-off events. For 28696/28696 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 108804 event pairs, 2047 based on Foata normal form. 22/13317 useless extension candidates. Maximal degree in co-relation 37335. Up to 3886 conditions per place. [2024-11-19 09:54:56,412 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 122 selfloop transitions, 108 changer transitions 0/233 dead transitions. [2024-11-19 09:54:56,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 233 transitions, 2752 flow [2024-11-19 09:54:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:54:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:54:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-19 09:54:56,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5990990990990991 [2024-11-19 09:54:56,414 INFO L175 Difference]: Start difference. First operand has 117 places, 120 transitions, 1342 flow. Second operand 6 states and 133 transitions. [2024-11-19 09:54:56,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 233 transitions, 2752 flow [2024-11-19 09:54:56,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 233 transitions, 2493 flow, removed 103 selfloop flow, removed 16 redundant places. [2024-11-19 09:54:56,541 INFO L231 Difference]: Finished difference. Result has 107 places, 177 transitions, 2106 flow [2024-11-19 09:54:56,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2106, PETRI_PLACES=107, PETRI_TRANSITIONS=177} [2024-11-19 09:54:56,542 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 71 predicate places. [2024-11-19 09:54:56,543 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 177 transitions, 2106 flow [2024-11-19 09:54:56,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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) [2024-11-19 09:54:56,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:56,544 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:56,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 09:54:56,744 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 [2024-11-19 09:54:56,745 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-19 09:54:56,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1160019607, now seen corresponding path program 9 times [2024-11-19 09:54:56,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:56,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105572505] [2024-11-19 09:54:56,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:54:56,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:56,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 09:54:56,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:54:57,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105572505] [2024-11-19 09:54:57,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105572505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:54:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650425868] [2024-11-19 09:54:57,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:54:57,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:54:57,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:54:57,192 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) [2024-11-19 09:54:57,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:54:57,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 09:54:57,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:54:57,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 09:54:57,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:54:57,964 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-19 09:54:57,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2024-11-19 09:54:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:54:57,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:54:58,277 INFO L349 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2024-11-19 09:54:58,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 20 [2024-11-19 09:54:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:54:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650425868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:54:58,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:54:58,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2024-11-19 09:54:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082469941] [2024-11-19 09:54:58,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:54:58,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:54:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:58,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:54:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:54:58,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-19 09:54:58,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 177 transitions, 2106 flow. Second operand has 31 states, 31 states have (on average 10.806451612903226) internal successors, (335), 31 states have internal predecessors, (335), 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) [2024-11-19 09:54:58,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:58,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-19 09:54:58,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:03,365 INFO L124 PetriNetUnfolderBase]: 18814/32261 cut-off events. [2024-11-19 09:55:03,365 INFO L125 PetriNetUnfolderBase]: For 54506/54506 co-relation queries the response was YES. [2024-11-19 09:55:03,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87163 conditions, 32261 events. 18814/32261 cut-off events. For 54506/54506 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 250813 event pairs, 4276 based on Foata normal form. 17/27291 useless extension candidates. Maximal degree in co-relation 70060. Up to 8876 conditions per place. [2024-11-19 09:55:03,514 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 623/623 dead transitions. [2024-11-19 09:55:03,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 623 transitions, 6214 flow [2024-11-19 09:55:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 09:55:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 09:55:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 535 transitions. [2024-11-19 09:55:03,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49860205032618826 [2024-11-19 09:55:03,517 INFO L175 Difference]: Start difference. First operand has 107 places, 177 transitions, 2106 flow. Second operand 29 states and 535 transitions. [2024-11-19 09:55:03,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 623 transitions, 6214 flow [2024-11-19 09:55:03,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 623 transitions, 5695 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-11-19 09:55:03,799 INFO L231 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2024-11-19 09:55:03,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2024-11-19 09:55:03,799 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 86 predicate places. [2024-11-19 09:55:03,799 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2024-11-19 09:55:03,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.806451612903226) internal successors, (335), 31 states have internal predecessors, (335), 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) [2024-11-19 09:55:03,802 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-19 09:55:03,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-19 09:55:03,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-19 09:55:03,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-19 09:55:03,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-11-19 09:55:03,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (7 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-19 09:55:03,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-19 09:55:03,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 09:55:04,008 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 [2024-11-19 09:55:04,009 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:04,015 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 09:55:04,016 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 09:55:04,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:55:04 BasicIcfg [2024-11-19 09:55:04,020 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 09:55:04,021 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 09:55:04,021 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 09:55:04,021 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 09:55:04,022 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:54:30" (3/4) ... [2024-11-19 09:55:04,023 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 09:55:04,028 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 09:55:04,028 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 09:55:04,036 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2024-11-19 09:55:04,036 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-19 09:55:04,037 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-19 09:55:04,037 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 09:55:04,119 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 09:55:04,119 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 09:55:04,120 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 09:55:04,120 INFO L158 Benchmark]: Toolchain (without parser) took 34780.95ms. Allocated memory was 161.5MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 124.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 594.3MB. Max. memory is 16.1GB. [2024-11-19 09:55:04,120 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 113.2MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:55:04,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.03ms. Allocated memory is still 161.5MB. Free memory was 124.5MB in the beginning and 110.8MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 09:55:04,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.61ms. Allocated memory is still 161.5MB. Free memory was 110.8MB in the beginning and 108.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 09:55:04,122 INFO L158 Benchmark]: Boogie Preprocessor took 66.65ms. Allocated memory is still 161.5MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:55:04,122 INFO L158 Benchmark]: RCFGBuilder took 799.83ms. Allocated memory is still 161.5MB. Free memory was 106.7MB in the beginning and 104.3MB in the end (delta: 2.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-19 09:55:04,122 INFO L158 Benchmark]: TraceAbstraction took 33459.29ms. Allocated memory was 161.5MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 104.3MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-19 09:55:04,122 INFO L158 Benchmark]: Witness Printer took 98.70ms. Allocated memory is still 2.3GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 09:55:04,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 113.2MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.03ms. Allocated memory is still 161.5MB. Free memory was 124.5MB in the beginning and 110.8MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.61ms. Allocated memory is still 161.5MB. Free memory was 110.8MB in the beginning and 108.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.65ms. Allocated memory is still 161.5MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 799.83ms. Allocated memory is still 161.5MB. Free memory was 106.7MB in the beginning and 104.3MB in the end (delta: 2.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 33459.29ms. Allocated memory was 161.5MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 104.3MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 98.70ms. Allocated memory is still 2.3GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 5.1MB). 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: 33.3s, OverallIterations: 17, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2412 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2374 mSDsluCounter, 615 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 607 mSDsCounter, 150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6858 IncrementalHoareTripleChecker+Invalid, 7008 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 150 mSolverCounterUnsat, 8 mSDtfsCounter, 6858 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 875 GetRequests, 597 SyntacticMatches, 2 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2118occurred in iteration=12, InterpolantAutomatonStates: 176, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 768 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 1080 ConstructedInterpolants, 9 QuantifiedInterpolants, 9784 SizeOfPredicates, 73 NumberOfNonLiveVariables, 1939 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 364/913 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! [2024-11-19 09:55:04,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE