./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/26_stack_cas.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:39:36,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:39:36,446 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:39:36,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:39:36,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:39:36,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:39:36,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:39:36,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:39:36,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:39:36,469 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:39:36,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:39:36,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:39:36,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:39:36,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:39:36,470 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:39:36,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:39:36,470 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:39:36,471 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:39:36,472 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:39:36,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:39:36,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:39:36,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:39:36,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:39:36,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:39:36,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:39:36,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:39:36,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:39:36,473 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 [2025-01-10 00:39:36,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:39:36,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:39:36,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:39:36,706 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:39:36,706 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:39:36,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-01-10 00:39:37,846 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/340bc6532/986456dc901b46cf968ffa210f3e9d94/FLAGb15e81212 [2025-01-10 00:39:38,127 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:39:38,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-01-10 00:39:38,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/340bc6532/986456dc901b46cf968ffa210f3e9d94/FLAGb15e81212 [2025-01-10 00:39:38,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/340bc6532/986456dc901b46cf968ffa210f3e9d94 [2025-01-10 00:39:38,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:39:38,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:39:38,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:39:38,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:39:38,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:39:38,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ccf8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38, skipping insertion in model container [2025-01-10 00:39:38,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:39:38,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:39:38,680 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:39:38,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:39:38,743 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:39:38,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38 WrapperNode [2025-01-10 00:39:38,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:39:38,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:39:38,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:39:38,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:39:38,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,772 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 247 [2025-01-10 00:39:38,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:39:38,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:39:38,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:39:38,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:39:38,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,793 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 4, 12, 6]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 2, 1]. The 9 writes are split as follows [0, 2, 5, 2]. [2025-01-10 00:39:38,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,800 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:39:38,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:39:38,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:39:38,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:39:38,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (1/1) ... [2025-01-10 00:39:38,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:39:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:39:38,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:39:38,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-10 00:39:38,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 00:39:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:39:38,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:39:38,856 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 00:39:38,948 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:39:38,949 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:39:39,272 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:39:39,273 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:39:39,621 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:39:39,622 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-10 00:39:39,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:39:39 BoogieIcfgContainer [2025-01-10 00:39:39,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:39:39,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:39:39,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:39:39,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:39:39,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:39:38" (1/3) ... [2025-01-10 00:39:39,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b758360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:39:39, skipping insertion in model container [2025-01-10 00:39:39,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:38" (2/3) ... [2025-01-10 00:39:39,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b758360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:39:39, skipping insertion in model container [2025-01-10 00:39:39,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:39:39" (3/3) ... [2025-01-10 00:39:39,629 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2025-01-10 00:39:39,639 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:39:39,640 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas.i that has 2 procedures, 73 locations, 1 initial locations, 3 loop locations, and 40 error locations. [2025-01-10 00:39:39,640 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:39:39,712 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:39:39,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 81 transitions, 166 flow [2025-01-10 00:39:39,777 INFO L124 PetriNetUnfolderBase]: 8/85 cut-off events. [2025-01-10 00:39:39,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:39:39,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 8/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 191 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2025-01-10 00:39:39,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 81 transitions, 166 flow [2025-01-10 00:39:39,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 81 transitions, 166 flow [2025-01-10 00:39:39,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:39:39,803 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;@10457a12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:39:39,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2025-01-10 00:39:39,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:39:39,809 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:39:39,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:39:39,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:39,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:39:39,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-01-10 00:39:39,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash 797066, now seen corresponding path program 1 times [2025-01-10 00:39:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060770631] [2025-01-10 00:39:39,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:40,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:39:40,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:39:40,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:40,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060770631] [2025-01-10 00:39:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060770631] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:40,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:40,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:40,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891457438] [2025-01-10 00:39:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:40,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:39:40,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:40,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:39:40,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:39:40,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 81 [2025-01-10 00:39:40,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 166 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2025-01-10 00:39:40,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:40,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 81 [2025-01-10 00:39:40,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:40,439 INFO L124 PetriNetUnfolderBase]: 99/259 cut-off events. [2025-01-10 00:39:40,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:39:40,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 259 events. 99/259 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 965 event pairs, 75 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 458. Up to 215 conditions per place. [2025-01-10 00:39:40,444 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 46 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2025-01-10 00:39:40,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 224 flow [2025-01-10 00:39:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:39:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:39:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 99 transitions. [2025-01-10 00:39:40,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-01-10 00:39:40,456 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 166 flow. Second operand 2 states and 99 transitions. [2025-01-10 00:39:40,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 224 flow [2025-01-10 00:39:40,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:39:40,463 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 132 flow [2025-01-10 00:39:40,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2025-01-10 00:39:40,467 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2025-01-10 00:39:40,469 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 132 flow [2025-01-10 00:39:40,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2025-01-10 00:39:40,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:40,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:39:40,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:39:40,470 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-01-10 00:39:40,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash 766184388, now seen corresponding path program 1 times [2025-01-10 00:39:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693486112] [2025-01-10 00:39:40,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:40,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:40,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:39:40,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:39:40,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:40,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:40,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:40,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693486112] [2025-01-10 00:39:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693486112] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:40,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:40,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:39:40,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974064935] [2025-01-10 00:39:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:40,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:40,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:40,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:40,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:40,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 81 [2025-01-10 00:39:40,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-01-10 00:39:40,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:40,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 81 [2025-01-10 00:39:40,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:41,013 INFO L124 PetriNetUnfolderBase]: 155/403 cut-off events. [2025-01-10 00:39:41,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:39:41,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 403 events. 155/403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1578 event pairs, 61 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 741. Up to 171 conditions per place. [2025-01-10 00:39:41,017 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 71 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2025-01-10 00:39:41,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 336 flow [2025-01-10 00:39:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2025-01-10 00:39:41,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5473251028806584 [2025-01-10 00:39:41,020 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 132 flow. Second operand 3 states and 133 transitions. [2025-01-10 00:39:41,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 336 flow [2025-01-10 00:39:41,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:39:41,023 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 145 flow [2025-01-10 00:39:41,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2025-01-10 00:39:41,025 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2025-01-10 00:39:41,025 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 145 flow [2025-01-10 00:39:41,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-01-10 00:39:41,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:41,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:39:41,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 00:39:41,028 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-01-10 00:39:41,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:41,028 INFO L85 PathProgramCache]: Analyzing trace with hash 766184389, now seen corresponding path program 1 times [2025-01-10 00:39:41,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:41,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605952715] [2025-01-10 00:39:41,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:41,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:41,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:39:41,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:39:41,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:41,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:41,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605952715] [2025-01-10 00:39:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605952715] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:41,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:39:41,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563824625] [2025-01-10 00:39:41,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:41,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:41,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:41,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:41,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 81 [2025-01-10 00:39:41,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-01-10 00:39:41,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:41,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 81 [2025-01-10 00:39:41,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:41,407 INFO L124 PetriNetUnfolderBase]: 149/389 cut-off events. [2025-01-10 00:39:41,407 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 00:39:41,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 389 events. 149/389 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1503 event pairs, 117 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 734. Up to 324 conditions per place. [2025-01-10 00:39:41,411 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 43 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2025-01-10 00:39:41,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 229 flow [2025-01-10 00:39:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-01-10 00:39:41,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4156378600823045 [2025-01-10 00:39:41,414 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 145 flow. Second operand 3 states and 101 transitions. [2025-01-10 00:39:41,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 229 flow [2025-01-10 00:39:41,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:39:41,415 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 140 flow [2025-01-10 00:39:41,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2025-01-10 00:39:41,416 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2025-01-10 00:39:41,416 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 140 flow [2025-01-10 00:39:41,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-01-10 00:39:41,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:41,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 00:39:41,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 00:39:41,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-01-10 00:39:41,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2018140425, now seen corresponding path program 1 times [2025-01-10 00:39:41,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:41,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388213965] [2025-01-10 00:39:41,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:41,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:41,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:39:41,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:39:41,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:41,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:39:41,642 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:39:41,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:39:41,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:39:41,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:41,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:39:41,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:39:41,672 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:39:41,672 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (79 of 80 remaining) [2025-01-10 00:39:41,673 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 80 remaining) [2025-01-10 00:39:41,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 80 remaining) [2025-01-10 00:39:41,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 80 remaining) [2025-01-10 00:39:41,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (56 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (51 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (50 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 80 remaining) [2025-01-10 00:39:41,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (39 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 80 remaining) [2025-01-10 00:39:41,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 80 remaining) [2025-01-10 00:39:41,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (16 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (11 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (10 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 80 remaining) [2025-01-10 00:39:41,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 80 remaining) [2025-01-10 00:39:41,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 80 remaining) [2025-01-10 00:39:41,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 80 remaining) [2025-01-10 00:39:41,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 80 remaining) [2025-01-10 00:39:41,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 80 remaining) [2025-01-10 00:39:41,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 80 remaining) [2025-01-10 00:39:41,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 00:39:41,682 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-10 00:39:41,684 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:39:41,685 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 00:39:41,769 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:39:41,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 155 transitions, 320 flow [2025-01-10 00:39:41,789 INFO L124 PetriNetUnfolderBase]: 16/164 cut-off events. [2025-01-10 00:39:41,789 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 00:39:41,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 164 events. 16/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 610 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 151. Up to 3 conditions per place. [2025-01-10 00:39:41,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 320 flow [2025-01-10 00:39:41,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 155 transitions, 320 flow [2025-01-10 00:39:41,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:39:41,797 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;@10457a12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:39:41,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 119 error locations. [2025-01-10 00:39:41,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:39:41,801 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:39:41,801 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:39:41,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:41,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:39:41,801 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-01-10 00:39:41,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:41,802 INFO L85 PathProgramCache]: Analyzing trace with hash 950981, now seen corresponding path program 1 times [2025-01-10 00:39:41,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:41,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033061392] [2025-01-10 00:39:41,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:41,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:42,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:39:42,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:39:42,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:42,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:42,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:42,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033061392] [2025-01-10 00:39:42,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033061392] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:42,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:42,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:42,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371333598] [2025-01-10 00:39:42,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:42,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:39:42,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:42,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:39:42,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:39:42,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 155 [2025-01-10 00:39:42,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 155 transitions, 320 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:42,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:42,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 155 [2025-01-10 00:39:42,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:43,294 INFO L124 PetriNetUnfolderBase]: 9422/15423 cut-off events. [2025-01-10 00:39:43,295 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2025-01-10 00:39:43,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29547 conditions, 15423 events. 9422/15423 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 110796 event pairs, 7467 based on Foata normal form. 0/8920 useless extension candidates. Maximal degree in co-relation 22353. Up to 14002 conditions per place. [2025-01-10 00:39:43,386 INFO L140 encePairwiseOnDemand]: 126/155 looper letters, 89 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2025-01-10 00:39:43,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 436 flow [2025-01-10 00:39:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:39:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:39:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 190 transitions. [2025-01-10 00:39:43,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2025-01-10 00:39:43,390 INFO L175 Difference]: Start difference. First operand has 144 places, 155 transitions, 320 flow. Second operand 2 states and 190 transitions. [2025-01-10 00:39:43,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 436 flow [2025-01-10 00:39:43,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 436 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:39:43,393 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 258 flow [2025-01-10 00:39:43,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2025-01-10 00:39:43,395 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -26 predicate places. [2025-01-10 00:39:43,395 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 258 flow [2025-01-10 00:39:43,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:43,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:43,396 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:39:43,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 00:39:43,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-01-10 00:39:43,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 914174152, now seen corresponding path program 1 times [2025-01-10 00:39:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:43,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536202116] [2025-01-10 00:39:43,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:43,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:39:43,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:39:43,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:43,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:43,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:43,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536202116] [2025-01-10 00:39:43,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536202116] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:43,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:39:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732620100] [2025-01-10 00:39:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:43,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:43,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:43,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:43,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:43,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 155 [2025-01-10 00:39:43,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2025-01-10 00:39:43,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:43,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 155 [2025-01-10 00:39:43,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:45,280 INFO L124 PetriNetUnfolderBase]: 15335/24906 cut-off events. [2025-01-10 00:39:45,280 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-01-10 00:39:45,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47745 conditions, 24906 events. 15335/24906 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 186392 event pairs, 5415 based on Foata normal form. 0/14895 useless extension candidates. Maximal degree in co-relation 47740. Up to 13522 conditions per place. [2025-01-10 00:39:45,486 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 157 selfloop transitions, 5 changer transitions 0/197 dead transitions. [2025-01-10 00:39:45,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 197 transitions, 733 flow [2025-01-10 00:39:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2025-01-10 00:39:45,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.589247311827957 [2025-01-10 00:39:45,490 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 258 flow. Second operand 3 states and 274 transitions. [2025-01-10 00:39:45,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 197 transitions, 733 flow [2025-01-10 00:39:45,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 197 transitions, 733 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:39:45,497 INFO L231 Difference]: Finished difference. Result has 121 places, 128 transitions, 297 flow [2025-01-10 00:39:45,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=121, PETRI_TRANSITIONS=128} [2025-01-10 00:39:45,498 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -23 predicate places. [2025-01-10 00:39:45,498 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 128 transitions, 297 flow [2025-01-10 00:39:45,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2025-01-10 00:39:45,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:45,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:39:45,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 00:39:45,498 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-01-10 00:39:45,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash 914174153, now seen corresponding path program 1 times [2025-01-10 00:39:45,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:45,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867647027] [2025-01-10 00:39:45,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:45,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:39:45,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:39:45,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:45,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:45,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867647027] [2025-01-10 00:39:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867647027] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:39:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531340806] [2025-01-10 00:39:45,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:45,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:45,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:45,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:45,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 155 [2025-01-10 00:39:45,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 128 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2025-01-10 00:39:45,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:45,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 155 [2025-01-10 00:39:45,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:47,002 INFO L124 PetriNetUnfolderBase]: 13539/22296 cut-off events. [2025-01-10 00:39:47,002 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2025-01-10 00:39:47,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44436 conditions, 22296 events. 13539/22296 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 166661 event pairs, 10880 based on Foata normal form. 0/14640 useless extension candidates. Maximal degree in co-relation 44429. Up to 20228 conditions per place. [2025-01-10 00:39:47,109 INFO L140 encePairwiseOnDemand]: 150/155 looper letters, 88 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2025-01-10 00:39:47,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 467 flow [2025-01-10 00:39:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2025-01-10 00:39:47,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236559139784946 [2025-01-10 00:39:47,111 INFO L175 Difference]: Start difference. First operand has 121 places, 128 transitions, 297 flow. Second operand 3 states and 197 transitions. [2025-01-10 00:39:47,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 467 flow [2025-01-10 00:39:47,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:39:47,117 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 286 flow [2025-01-10 00:39:47,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2025-01-10 00:39:47,118 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -26 predicate places. [2025-01-10 00:39:47,119 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 286 flow [2025-01-10 00:39:47,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2025-01-10 00:39:47,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:47,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:47,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 00:39:47,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-01-10 00:39:47,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash -224297870, now seen corresponding path program 1 times [2025-01-10 00:39:47,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:47,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135714428] [2025-01-10 00:39:47,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:47,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:39:47,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:39:47,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:47,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:47,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:47,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135714428] [2025-01-10 00:39:47,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135714428] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:47,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:47,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:39:47,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812687837] [2025-01-10 00:39:47,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:47,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:47,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:47,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:47,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:47,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 155 [2025-01-10 00:39:47,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2025-01-10 00:39:47,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:47,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 155 [2025-01-10 00:39:47,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:48,727 INFO L124 PetriNetUnfolderBase]: 13292/21734 cut-off events. [2025-01-10 00:39:48,728 INFO L125 PetriNetUnfolderBase]: For 1296/1308 co-relation queries the response was YES. [2025-01-10 00:39:48,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42989 conditions, 21734 events. 13292/21734 cut-off events. For 1296/1308 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 160107 event pairs, 4615 based on Foata normal form. 12/14531 useless extension candidates. Maximal degree in co-relation 42982. Up to 12796 conditions per place. [2025-01-10 00:39:48,828 INFO L140 encePairwiseOnDemand]: 144/155 looper letters, 147 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2025-01-10 00:39:48,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 185 transitions, 717 flow [2025-01-10 00:39:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2025-01-10 00:39:48,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2025-01-10 00:39:48,833 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 286 flow. Second operand 3 states and 260 transitions. [2025-01-10 00:39:48,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 185 transitions, 717 flow [2025-01-10 00:39:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 185 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:39:48,836 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 312 flow [2025-01-10 00:39:48,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2025-01-10 00:39:48,836 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -24 predicate places. [2025-01-10 00:39:48,836 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 312 flow [2025-01-10 00:39:48,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2025-01-10 00:39:48,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:48,837 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:48,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 00:39:48,837 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-01-10 00:39:48,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -224297869, now seen corresponding path program 1 times [2025-01-10 00:39:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226967640] [2025-01-10 00:39:48,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:48,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:39:48,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:39:48,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:48,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226967640] [2025-01-10 00:39:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226967640] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:39:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297204913] [2025-01-10 00:39:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:49,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:49,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:49,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:49,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:49,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 155 [2025-01-10 00:39:49,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2025-01-10 00:39:49,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:49,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 155 [2025-01-10 00:39:49,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:49,994 INFO L124 PetriNetUnfolderBase]: 11117/18440 cut-off events. [2025-01-10 00:39:49,994 INFO L125 PetriNetUnfolderBase]: For 1857/1857 co-relation queries the response was YES. [2025-01-10 00:39:50,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37384 conditions, 18440 events. 11117/18440 cut-off events. For 1857/1857 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 135876 event pairs, 8719 based on Foata normal form. 0/13226 useless extension candidates. Maximal degree in co-relation 37376. Up to 16474 conditions per place. [2025-01-10 00:39:50,084 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 82 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2025-01-10 00:39:50,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 462 flow [2025-01-10 00:39:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2025-01-10 00:39:50,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2025-01-10 00:39:50,085 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 312 flow. Second operand 3 states and 189 transitions. [2025-01-10 00:39:50,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 462 flow [2025-01-10 00:39:50,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:39:50,089 INFO L231 Difference]: Finished difference. Result has 112 places, 116 transitions, 288 flow [2025-01-10 00:39:50,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=112, PETRI_TRANSITIONS=116} [2025-01-10 00:39:50,089 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -32 predicate places. [2025-01-10 00:39:50,089 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 116 transitions, 288 flow [2025-01-10 00:39:50,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2025-01-10 00:39:50,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:50,090 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-01-10 00:39:50,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 00:39:50,090 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-01-10 00:39:50,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2118259067, now seen corresponding path program 1 times [2025-01-10 00:39:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:50,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867313969] [2025-01-10 00:39:50,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:50,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:50,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:39:50,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:39:50,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:50,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:39:50,225 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:39:50,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:39:50,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:39:50,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:50,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:39:50,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:39:50,241 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (118 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 119 remaining) [2025-01-10 00:39:50,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (95 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (90 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (89 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (78 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 119 remaining) [2025-01-10 00:39:50,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 119 remaining) [2025-01-10 00:39:50,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 119 remaining) [2025-01-10 00:39:50,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 119 remaining) [2025-01-10 00:39:50,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 119 remaining) [2025-01-10 00:39:50,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 119 remaining) [2025-01-10 00:39:50,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 119 remaining) [2025-01-10 00:39:50,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 119 remaining) [2025-01-10 00:39:50,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (55 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (50 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (49 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 119 remaining) [2025-01-10 00:39:50,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 119 remaining) [2025-01-10 00:39:50,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (16 of 119 remaining) [2025-01-10 00:39:50,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (11 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (10 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 119 remaining) [2025-01-10 00:39:50,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 119 remaining) [2025-01-10 00:39:50,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 00:39:50,250 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-01-10 00:39:50,250 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:39:50,250 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-10 00:39:50,361 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:39:50,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 229 transitions, 476 flow [2025-01-10 00:39:50,384 INFO L124 PetriNetUnfolderBase]: 24/243 cut-off events. [2025-01-10 00:39:50,385 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-10 00:39:50,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 243 events. 24/243 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1118 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 224. Up to 4 conditions per place. [2025-01-10 00:39:50,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 229 transitions, 476 flow [2025-01-10 00:39:50,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 229 transitions, 476 flow [2025-01-10 00:39:50,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:39:50,394 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;@10457a12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:39:50,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 158 error locations. [2025-01-10 00:39:50,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:39:50,396 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:39:50,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:39:50,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:50,396 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:39:50,396 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2025-01-10 00:39:50,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1178378, now seen corresponding path program 1 times [2025-01-10 00:39:50,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:50,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319287996] [2025-01-10 00:39:50,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:50,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:39:50,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:39:50,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:50,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:50,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:50,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319287996] [2025-01-10 00:39:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319287996] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:50,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995088620] [2025-01-10 00:39:50,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:50,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:39:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:50,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:39:50,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:39:50,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 229 [2025-01-10 00:39:50,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 229 transitions, 476 flow. Second operand has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2025-01-10 00:39:50,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:50,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 229 [2025-01-10 00:39:50,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand