./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc 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/08_rand_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 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:35:50,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:35:50,486 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:35:50,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:35:50,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:35:50,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:35:50,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:35:50,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:35:50,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:35:50,505 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:35:50,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:35:50,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:35:50,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:35:50,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:35:50,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:35:50,506 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:35:50,507 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:35:50,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:35:50,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:35:50,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:35:50,508 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:35:50,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:35:50,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:35:50,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:35:50,508 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 -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2025-02-06 12:35:50,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:35:50,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:35:50,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:35:50,751 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:35:50,751 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:35:50,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-02-06 12:35:51,920 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e1dd74228/5a9a66b445d6439786ec073aac4cc618/FLAGecf196570 [2025-02-06 12:35:52,185 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:35:52,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-02-06 12:35:52,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e1dd74228/5a9a66b445d6439786ec073aac4cc618/FLAGecf196570 [2025-02-06 12:35:52,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e1dd74228/5a9a66b445d6439786ec073aac4cc618 [2025-02-06 12:35:52,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:35:52,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:35:52,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:35:52,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:35:52,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:35:52,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350ce49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52, skipping insertion in model container [2025-02-06 12:35:52,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:35:52,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:35:52,790 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:35:52,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:35:52,866 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:35:52,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52 WrapperNode [2025-02-06 12:35:52,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:35:52,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:35:52,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:35:52,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:35:52,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,885 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,903 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 141 [2025-02-06 12:35:52,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:35:52,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:35:52,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:35:52,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:35:52,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,941 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 3, 6]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 4 writes are split as follows [0, 2, 2]. [2025-02-06 12:35:52,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,946 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:35:52,962 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:35:52,962 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:35:52,962 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:35:52,963 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (1/1) ... [2025-02-06 12:35:52,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:35:52,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:52,989 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) [2025-02-06 12:35:52,992 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 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 12:35:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:35:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:35:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:35:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:35:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:35:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 12:35:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:35:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:35:53,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:35:53,010 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:35:53,099 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:35:53,101 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:35:53,325 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L728: havoc PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset; [2025-02-06 12:35:53,326 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L728-1: SUMMARY for call ULTIMATE.dealloc(PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset); srcloc: null [2025-02-06 12:35:53,351 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:35:53,352 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:35:53,489 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:35:53,490 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:35:53,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:35:53 BoogieIcfgContainer [2025-02-06 12:35:53,491 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:35:53,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:35:53,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:35:53,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:35:53,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:35:52" (1/3) ... [2025-02-06 12:35:53,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ced5c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:35:53, skipping insertion in model container [2025-02-06 12:35:53,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:52" (2/3) ... [2025-02-06 12:35:53,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ced5c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:35:53, skipping insertion in model container [2025-02-06 12:35:53,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:35:53" (3/3) ... [2025-02-06 12:35:53,500 INFO L128 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2025-02-06 12:35:53,511 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:35:53,512 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 08_rand_cas.i that has 2 procedures, 64 locations, 1 initial locations, 4 loop locations, and 20 error locations. [2025-02-06 12:35:53,512 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:35:53,583 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:35:53,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 77 transitions, 158 flow [2025-02-06 12:35:53,637 INFO L124 PetriNetUnfolderBase]: 13/81 cut-off events. [2025-02-06 12:35:53,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:53,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 13/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 217 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 74. Up to 3 conditions per place. [2025-02-06 12:35:53,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 77 transitions, 158 flow [2025-02-06 12:35:53,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 77 transitions, 158 flow [2025-02-06 12:35:53,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:35:53,660 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;@21b03aa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:35:53,660 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2025-02-06 12:35:53,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:35:53,662 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 12:35:53,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:53,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:53,663 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:35:53,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2025-02-06 12:35:53,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 440158, now seen corresponding path program 1 times [2025-02-06 12:35:53,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314573877] [2025-02-06 12:35:53,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:53,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:53,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:35:53,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:35:53,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:53,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:53,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:53,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314573877] [2025-02-06 12:35:53,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314573877] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:53,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:53,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:35:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334055403] [2025-02-06 12:35:53,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:53,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:35:53,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:53,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:35:53,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:35:53,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2025-02-06 12:35:53,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2025-02-06 12:35:53,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:53,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2025-02-06 12:35:53,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:53,898 INFO L124 PetriNetUnfolderBase]: 70/224 cut-off events. [2025-02-06 12:35:53,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:53,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 224 events. 70/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 860 event pairs, 58 based on Foata normal form. 24/198 useless extension candidates. Maximal degree in co-relation 367. Up to 156 conditions per place. [2025-02-06 12:35:53,906 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 34 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2025-02-06 12:35:53,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 192 flow [2025-02-06 12:35:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 12:35:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 12:35:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2025-02-06 12:35:53,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6493506493506493 [2025-02-06 12:35:53,916 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 158 flow. Second operand 2 states and 100 transitions. [2025-02-06 12:35:53,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 192 flow [2025-02-06 12:35:53,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:35:53,921 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 124 flow [2025-02-06 12:35:53,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2025-02-06 12:35:53,925 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2025-02-06 12:35:53,925 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 124 flow [2025-02-06 12:35:53,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2025-02-06 12:35:53,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:53,926 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 12:35:53,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:35:53,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2025-02-06 12:35:53,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash 231327877, now seen corresponding path program 1 times [2025-02-06 12:35:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074517058] [2025-02-06 12:35:53,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:53,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:35:53,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:35:53,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:53,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:35:53,942 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 12:35:53,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:35:53,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:35:53,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:53,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:35:53,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 12:35:53,974 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 12:35:53,975 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2025-02-06 12:35:53,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 40 remaining) [2025-02-06 12:35:53,978 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 40 remaining) [2025-02-06 12:35:53,978 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 40 remaining) [2025-02-06 12:35:53,978 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 40 remaining) [2025-02-06 12:35:53,978 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 40 remaining) [2025-02-06 12:35:53,978 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 40 remaining) [2025-02-06 12:35:53,978 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (32 of 40 remaining) [2025-02-06 12:35:53,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (31 of 40 remaining) [2025-02-06 12:35:53,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 40 remaining) [2025-02-06 12:35:53,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 40 remaining) [2025-02-06 12:35:53,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 40 remaining) [2025-02-06 12:35:53,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (20 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 40 remaining) [2025-02-06 12:35:53,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (11 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 40 remaining) [2025-02-06 12:35:53,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (0 of 40 remaining) [2025-02-06 12:35:53,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:35:53,982 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 12:35:53,985 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 12:35:53,985 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 12:35:54,040 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:35:54,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 147 transitions, 304 flow [2025-02-06 12:35:54,061 INFO L124 PetriNetUnfolderBase]: 26/156 cut-off events. [2025-02-06 12:35:54,061 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 12:35:54,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 156 events. 26/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 628 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2025-02-06 12:35:54,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 147 transitions, 304 flow [2025-02-06 12:35:54,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 147 transitions, 304 flow [2025-02-06 12:35:54,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:35:54,065 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21b03aa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:35:54,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2025-02-06 12:35:54,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:35:54,070 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 12:35:54,070 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:54,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:54,070 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:35:54,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2025-02-06 12:35:54,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 586129, now seen corresponding path program 1 times [2025-02-06 12:35:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294079129] [2025-02-06 12:35:54,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:54,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:35:54,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:35:54,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:54,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:54,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:54,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294079129] [2025-02-06 12:35:54,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294079129] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:54,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:54,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:35:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715870707] [2025-02-06 12:35:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:54,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:35:54,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:54,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:35:54,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:35:54,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 147 [2025-02-06 12:35:54,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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) [2025-02-06 12:35:54,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:54,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 147 [2025-02-06 12:35:54,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:55,090 INFO L124 PetriNetUnfolderBase]: 4969/10043 cut-off events. [2025-02-06 12:35:55,090 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2025-02-06 12:35:55,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17698 conditions, 10043 events. 4969/10043 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 85482 event pairs, 4408 based on Foata normal form. 1464/8830 useless extension candidates. Maximal degree in co-relation 10993. Up to 7560 conditions per place. [2025-02-06 12:35:55,141 INFO L140 encePairwiseOnDemand]: 124/147 looper letters, 65 selfloop transitions, 0 changer transitions 0/116 dead transitions. [2025-02-06 12:35:55,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 372 flow [2025-02-06 12:35:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 12:35:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 12:35:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2025-02-06 12:35:55,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2025-02-06 12:35:55,143 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 304 flow. Second operand 2 states and 192 transitions. [2025-02-06 12:35:55,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 372 flow [2025-02-06 12:35:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:35:55,145 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 242 flow [2025-02-06 12:35:55,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2025-02-06 12:35:55,146 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, -12 predicate places. [2025-02-06 12:35:55,146 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 242 flow [2025-02-06 12:35:55,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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) [2025-02-06 12:35:55,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:55,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:55,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:35:55,147 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2025-02-06 12:35:55,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1208992488, now seen corresponding path program 1 times [2025-02-06 12:35:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:55,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991776126] [2025-02-06 12:35:55,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:55,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:35:55,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:35:55,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:55,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991776126] [2025-02-06 12:35:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991776126] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:55,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:35:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537291620] [2025-02-06 12:35:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:55,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:35:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:55,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:35:55,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:35:55,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 147 [2025-02-06 12:35:55,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2025-02-06 12:35:55,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:55,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 147 [2025-02-06 12:35:55,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:55,980 INFO L124 PetriNetUnfolderBase]: 4269/8806 cut-off events. [2025-02-06 12:35:55,980 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-02-06 12:35:55,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15484 conditions, 8806 events. 4269/8806 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 73688 event pairs, 3102 based on Foata normal form. 0/6751 useless extension candidates. Maximal degree in co-relation 15479. Up to 5153 conditions per place. [2025-02-06 12:35:56,034 INFO L140 encePairwiseOnDemand]: 136/147 looper letters, 119 selfloop transitions, 3 changer transitions 0/171 dead transitions. [2025-02-06 12:35:56,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 171 transitions, 601 flow [2025-02-06 12:35:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:35:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:35:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2025-02-06 12:35:56,037 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2025-02-06 12:35:56,037 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 242 flow. Second operand 3 states and 280 transitions. [2025-02-06 12:35:56,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 171 transitions, 601 flow [2025-02-06 12:35:56,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:35:56,042 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 275 flow [2025-02-06 12:35:56,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2025-02-06 12:35:56,044 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, -9 predicate places. [2025-02-06 12:35:56,044 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 275 flow [2025-02-06 12:35:56,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2025-02-06 12:35:56,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:56,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:56,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:35:56,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2025-02-06 12:35:56,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1208992489, now seen corresponding path program 1 times [2025-02-06 12:35:56,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:56,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492683186] [2025-02-06 12:35:56,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:56,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:56,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:35:56,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:35:56,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:56,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492683186] [2025-02-06 12:35:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492683186] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:35:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077683538] [2025-02-06 12:35:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:56,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:35:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:56,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:35:56,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:35:56,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 147 [2025-02-06 12:35:56,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2025-02-06 12:35:56,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:56,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 147 [2025-02-06 12:35:56,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:56,865 INFO L124 PetriNetUnfolderBase]: 3420/7215 cut-off events. [2025-02-06 12:35:56,865 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2025-02-06 12:35:56,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12903 conditions, 7215 events. 3420/7215 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 58656 event pairs, 3084 based on Foata normal form. 0/5901 useless extension candidates. Maximal degree in co-relation 12896. Up to 5255 conditions per place. [2025-02-06 12:35:56,895 INFO L140 encePairwiseOnDemand]: 138/147 looper letters, 60 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2025-02-06 12:35:56,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 381 flow [2025-02-06 12:35:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:35:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:35:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2025-02-06 12:35:56,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2025-02-06 12:35:56,899 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 275 flow. Second operand 3 states and 217 transitions. [2025-02-06 12:35:56,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 381 flow [2025-02-06 12:35:56,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:35:56,905 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 258 flow [2025-02-06 12:35:56,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2025-02-06 12:35:56,905 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, -16 predicate places. [2025-02-06 12:35:56,908 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 258 flow [2025-02-06 12:35:56,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2025-02-06 12:35:56,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:56,908 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-06 12:35:56,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:35:56,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2025-02-06 12:35:56,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash -67944036, now seen corresponding path program 1 times [2025-02-06 12:35:56,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:56,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546471207] [2025-02-06 12:35:56,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:56,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:56,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:35:56,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:35:56,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:56,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:35:56,925 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 12:35:56,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:35:56,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:35:56,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:56,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:35:56,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 12:35:56,944 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 12:35:56,944 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (58 of 59 remaining) [2025-02-06 12:35:56,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 59 remaining) [2025-02-06 12:35:56,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 59 remaining) [2025-02-06 12:35:56,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (51 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (50 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 59 remaining) [2025-02-06 12:35:56,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 59 remaining) [2025-02-06 12:35:56,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 59 remaining) [2025-02-06 12:35:56,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 59 remaining) [2025-02-06 12:35:56,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (39 of 59 remaining) [2025-02-06 12:35:56,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 59 remaining) [2025-02-06 12:35:56,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 59 remaining) [2025-02-06 12:35:56,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 59 remaining) [2025-02-06 12:35:56,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (31 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (30 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 59 remaining) [2025-02-06 12:35:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (19 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 59 remaining) [2025-02-06 12:35:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (11 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 59 remaining) [2025-02-06 12:35:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (0 of 59 remaining) [2025-02-06 12:35:56,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 12:35:56,950 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-06 12:35:56,950 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 12:35:56,950 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 12:35:57,017 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:35:57,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 217 transitions, 452 flow [2025-02-06 12:35:57,045 INFO L124 PetriNetUnfolderBase]: 39/231 cut-off events. [2025-02-06 12:35:57,045 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 12:35:57,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 39/231 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1094 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 212. Up to 4 conditions per place. [2025-02-06 12:35:57,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 217 transitions, 452 flow [2025-02-06 12:35:57,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 217 transitions, 452 flow [2025-02-06 12:35:57,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:35:57,053 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;@21b03aa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:35:57,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2025-02-06 12:35:57,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:35:57,055 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 12:35:57,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:57,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:57,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:35:57,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-02-06 12:35:57,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash 801610, now seen corresponding path program 1 times [2025-02-06 12:35:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:57,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209966133] [2025-02-06 12:35:57,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:57,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:35:57,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:35:57,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:57,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:57,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:57,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209966133] [2025-02-06 12:35:57,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209966133] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:57,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:57,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:35:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421247339] [2025-02-06 12:35:57,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:57,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:35:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:57,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:35:57,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:35:57,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 217 [2025-02-06 12:35:57,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 217 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2025-02-06 12:35:57,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:57,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 217 [2025-02-06 12:35:57,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:20,794 INFO L124 PetriNetUnfolderBase]: 235360/396686 cut-off events. [2025-02-06 12:36:20,795 INFO L125 PetriNetUnfolderBase]: For 6126/6126 co-relation queries the response was YES. [2025-02-06 12:36:21,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713900 conditions, 396686 events. 235360/396686 cut-off events. For 6126/6126 co-relation queries the response was YES. Maximal size of possible extension queue 11450. Compared 4412635 event pairs, 213208 based on Foata normal form. 66135/348860 useless extension candidates. Maximal degree in co-relation 282412. Up to 313518 conditions per place. [2025-02-06 12:36:23,478 INFO L140 encePairwiseOnDemand]: 183/217 looper letters, 96 selfloop transitions, 0 changer transitions 0/172 dead transitions. [2025-02-06 12:36:23,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 172 transitions, 554 flow [2025-02-06 12:36:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 12:36:23,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 12:36:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 284 transitions. [2025-02-06 12:36:23,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6543778801843319 [2025-02-06 12:36:23,479 INFO L175 Difference]: Start difference. First operand has 185 places, 217 transitions, 452 flow. Second operand 2 states and 284 transitions. [2025-02-06 12:36:23,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 172 transitions, 554 flow [2025-02-06 12:36:23,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 172 transitions, 552 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-06 12:36:23,486 INFO L231 Difference]: Finished difference. Result has 168 places, 172 transitions, 360 flow [2025-02-06 12:36:23,486 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=360, PETRI_PLACES=168, PETRI_TRANSITIONS=172} [2025-02-06 12:36:23,489 INFO L279 CegarLoopForPetriNet]: 185 programPoint places, -17 predicate places. [2025-02-06 12:36:23,489 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 172 transitions, 360 flow [2025-02-06 12:36:23,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2025-02-06 12:36:23,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:23,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:36:23,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 12:36:23,490 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-02-06 12:36:23,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash 561570371, now seen corresponding path program 1 times [2025-02-06 12:36:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:23,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625505099] [2025-02-06 12:36:23,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:23,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:23,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:36:23,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:36:23,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:23,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625505099] [2025-02-06 12:36:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625505099] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:36:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420725090] [2025-02-06 12:36:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:23,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:36:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:23,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:36:23,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:36:23,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 217 [2025-02-06 12:36:23,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 172 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2025-02-06 12:36:23,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:23,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 217 [2025-02-06 12:36:23,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand