./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:57:54,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:57:54,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:57:54,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:57:54,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:57:54,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:57:54,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:57:54,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:57:54,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:57:54,556 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:57:54,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:57:54,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:57:54,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:57:54,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:57:54,557 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:57:54,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:57:54,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:57:54,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:57:54,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:57:54,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:57:54,559 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:57:54,559 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:57:54,559 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:57:54,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:57:54,560 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:57:54,560 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:57:54,563 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:57:54,563 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:57:54,563 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:57:54,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:57:54,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:57:54,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:57:54,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:57:54,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:57:54,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:57:54,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:57:54,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:57:54,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:57:54,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:57:54,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:57:54,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:57:54,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:57:54,568 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2024-11-09 10:57:54,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:57:54,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:57:54,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:57:54,779 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:57:54,780 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:57:54,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-09 10:57:55,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:57:56,111 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:57:56,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-09 10:57:56,120 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e6948b2/d03c93e15f934305998abcfd209e1308/FLAG1d3d56b1d [2024-11-09 10:57:56,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e6948b2/d03c93e15f934305998abcfd209e1308 [2024-11-09 10:57:56,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:57:56,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:57:56,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:57:56,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:57:56,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:57:56,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1a1104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56, skipping insertion in model container [2024-11-09 10:57:56,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:57:56,732 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:57:56,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:57:56,765 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:57:56,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:57:56,797 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:57:56,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56 WrapperNode [2024-11-09 10:57:56,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:57:56,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:57:56,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:57:56,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:57:56,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,833 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 157 [2024-11-09 10:57:56,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:57:56,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:57:56,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:57:56,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:57:56,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,866 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 10:57:56,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:57:56,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:57:56,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:57:56,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:57:56,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (1/1) ... [2024-11-09 10:57:56,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:57:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:57:56,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:57:56,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:57:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:57:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:57:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:57:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:57:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:57:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:57:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:57:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:57:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:57:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:57:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:57:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:57:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:57:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:57:56,958 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:57:57,037 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:57:57,039 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:57:57,255 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:57:57,256 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:57:57,411 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:57:57,411 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 10:57:57,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:57 BoogieIcfgContainer [2024-11-09 10:57:57,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:57:57,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:57:57,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:57:57,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:57:57,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:57:56" (1/3) ... [2024-11-09 10:57:57,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7262e649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:57:57, skipping insertion in model container [2024-11-09 10:57:57,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:56" (2/3) ... [2024-11-09 10:57:57,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7262e649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:57:57, skipping insertion in model container [2024-11-09 10:57:57,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:57" (3/3) ... [2024-11-09 10:57:57,420 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2024-11-09 10:57:57,433 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:57:57,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-09 10:57:57,433 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:57:57,499 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:57:57,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-09 10:57:57,549 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-09 10:57:57,550 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:57:57,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 110 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-09 10:57:57,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-09 10:57:57,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 45 transitions, 102 flow [2024-11-09 10:57:57,568 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:57:57,574 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;@49ae02a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:57:57,575 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-09 10:57:57,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:57:57,579 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 10:57:57,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:57:57,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:57:57,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:57:57,581 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:57:57,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:57:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 546240, now seen corresponding path program 1 times [2024-11-09 10:57:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:57:57,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802798644] [2024-11-09 10:57:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:57:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:57,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:57:57,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802798644] [2024-11-09 10:57:57,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802798644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:57:57,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:57:57,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:57:57,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85585840] [2024-11-09 10:57:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:57:57,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:57:57,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:57:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:57:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:57:57,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:57:57,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:57,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:57:57,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:57:57,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:57:57,967 INFO L124 PetriNetUnfolderBase]: 146/348 cut-off events. [2024-11-09 10:57:57,968 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-09 10:57:57,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 348 events. 146/348 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1789 event pairs, 97 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 534. Up to 239 conditions per place. [2024-11-09 10:57:57,976 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 24 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-09 10:57:57,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 148 flow [2024-11-09 10:57:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:57:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:57:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-09 10:57:57,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-09 10:57:57,989 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 102 flow. Second operand 3 states and 85 transitions. [2024-11-09 10:57:57,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 148 flow [2024-11-09 10:57:57,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:57:57,997 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 92 flow [2024-11-09 10:57:57,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-11-09 10:57:58,001 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2024-11-09 10:57:58,002 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 92 flow [2024-11-09 10:57:58,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:58,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:57:58,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:57:58,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:57:58,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:57:58,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:57:58,003 INFO L85 PathProgramCache]: Analyzing trace with hash 546241, now seen corresponding path program 1 times [2024-11-09 10:57:58,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:57:58,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259817795] [2024-11-09 10:57:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:58,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:57:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:58,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:57:58,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259817795] [2024-11-09 10:57:58,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259817795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:57:58,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:57:58,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:57:58,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476711062] [2024-11-09 10:57:58,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:57:58,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:57:58,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:57:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:57:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:57:58,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:57:58,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:58,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:57:58,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:57:58,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:57:58,354 INFO L124 PetriNetUnfolderBase]: 147/351 cut-off events. [2024-11-09 10:57:58,354 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:57:58,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 351 events. 147/351 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1800 event pairs, 97 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 585. Up to 244 conditions per place. [2024-11-09 10:57:58,358 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 27 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-11-09 10:57:58,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 160 flow [2024-11-09 10:57:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:57:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:57:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-09 10:57:58,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-09 10:57:58,361 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 92 flow. Second operand 3 states and 88 transitions. [2024-11-09 10:57:58,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 160 flow [2024-11-09 10:57:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:57:58,363 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 107 flow [2024-11-09 10:57:58,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-11-09 10:57:58,364 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2024-11-09 10:57:58,365 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 107 flow [2024-11-09 10:57:58,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:58,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:57:58,365 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-09 10:57:58,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:57:58,366 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:57:58,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:57:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash 524954331, now seen corresponding path program 1 times [2024-11-09 10:57:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:57:58,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603278646] [2024-11-09 10:57:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:57:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:58,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:57:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603278646] [2024-11-09 10:57:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603278646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:57:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662953413] [2024-11-09 10:57:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:58,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:57:58,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:57:58,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:57:58,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:57:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:58,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:57:58,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:57:58,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:57:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:58,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:57:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:58,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662953413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:57:58,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:57:58,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:57:58,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201267477] [2024-11-09 10:57:58,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:57:58,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:57:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:57:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:57:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:57:59,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:57:59,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 107 flow. Second operand has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:59,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:57:59,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:57:59,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:57:59,330 INFO L124 PetriNetUnfolderBase]: 147/350 cut-off events. [2024-11-09 10:57:59,330 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:57:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 350 events. 147/350 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1799 event pairs, 97 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 585. Up to 240 conditions per place. [2024-11-09 10:57:59,332 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 23 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2024-11-09 10:57:59,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 163 flow [2024-11-09 10:57:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:57:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:57:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-09 10:57:59,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-09 10:57:59,333 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 107 flow. Second operand 5 states and 125 transitions. [2024-11-09 10:57:59,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 163 flow [2024-11-09 10:57:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:57:59,335 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 120 flow [2024-11-09 10:57:59,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-11-09 10:57:59,335 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2024-11-09 10:57:59,335 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 120 flow [2024-11-09 10:57:59,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:59,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:57:59,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:57:59,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:57:59,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:57:59,537 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:57:59,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:57:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash -903364661, now seen corresponding path program 1 times [2024-11-09 10:57:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:57:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856961742] [2024-11-09 10:57:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:59,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:57:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:59,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:57:59,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856961742] [2024-11-09 10:57:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856961742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:57:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:57:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:57:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135542148] [2024-11-09 10:57:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:57:59,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:57:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:57:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:57:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:57:59,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-09 10:57:59,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:59,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:57:59,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-09 10:57:59,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:57:59,624 INFO L124 PetriNetUnfolderBase]: 146/349 cut-off events. [2024-11-09 10:57:59,624 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 10:57:59,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 349 events. 146/349 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1788 event pairs, 97 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 585. Up to 242 conditions per place. [2024-11-09 10:57:59,626 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 26 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-09 10:57:59,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 170 flow [2024-11-09 10:57:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:57:59,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:57:59,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-09 10:57:59,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-11-09 10:57:59,627 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 120 flow. Second operand 3 states and 89 transitions. [2024-11-09 10:57:59,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 170 flow [2024-11-09 10:57:59,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 160 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 10:57:59,628 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 108 flow [2024-11-09 10:57:59,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-09 10:57:59,629 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-11-09 10:57:59,629 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 108 flow [2024-11-09 10:57:59,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:59,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:57:59,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:57:59,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:57:59,630 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:57:59,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:57:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash 941988976, now seen corresponding path program 1 times [2024-11-09 10:57:59,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:57:59,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9357887] [2024-11-09 10:57:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:57:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:57:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9357887] [2024-11-09 10:57:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9357887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:57:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:57:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:57:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967267321] [2024-11-09 10:57:59,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:57:59,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:57:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:57:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:57:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:57:59,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 10:57:59,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:59,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:57:59,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 10:57:59,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:57:59,753 INFO L124 PetriNetUnfolderBase]: 146/305 cut-off events. [2024-11-09 10:57:59,753 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 10:57:59,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 305 events. 146/305 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1288 event pairs, 97 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 551. Up to 238 conditions per place. [2024-11-09 10:57:59,755 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 26 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-09 10:57:59,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 152 flow [2024-11-09 10:57:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:57:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:57:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-09 10:57:59,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-09 10:57:59,756 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 108 flow. Second operand 4 states and 84 transitions. [2024-11-09 10:57:59,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 152 flow [2024-11-09 10:57:59,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:57:59,757 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 96 flow [2024-11-09 10:57:59,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-09 10:57:59,757 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -7 predicate places. [2024-11-09 10:57:59,758 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 96 flow [2024-11-09 10:57:59,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:57:59,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:57:59,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:57:59,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:57:59,758 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:57:59,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:57:59,758 INFO L85 PathProgramCache]: Analyzing trace with hash 941988977, now seen corresponding path program 1 times [2024-11-09 10:57:59,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:57:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071600684] [2024-11-09 10:57:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:57:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:57:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:57:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071600684] [2024-11-09 10:57:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071600684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:57:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672339221] [2024-11-09 10:57:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:57:59,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:57:59,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:57:59,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:57:59,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:57:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:57:59,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:57:59,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:00,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:00,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 10:58:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:00,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672339221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:00,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:00,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:58:00,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738837731] [2024-11-09 10:58:00,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:00,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:58:00,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:58:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:58:00,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:58:00,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 96 flow. Second operand has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:00,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:00,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:58:00,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:00,367 INFO L124 PetriNetUnfolderBase]: 324/590 cut-off events. [2024-11-09 10:58:00,367 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-09 10:58:00,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 590 events. 324/590 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2725 event pairs, 111 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 1108. Up to 299 conditions per place. [2024-11-09 10:58:00,370 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 45 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-09 10:58:00,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 237 flow [2024-11-09 10:58:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-09 10:58:00,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-09 10:58:00,371 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 96 flow. Second operand 5 states and 145 transitions. [2024-11-09 10:58:00,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 237 flow [2024-11-09 10:58:00,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:00,373 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 109 flow [2024-11-09 10:58:00,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-09 10:58:00,373 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2024-11-09 10:58:00,374 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 109 flow [2024-11-09 10:58:00,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:00,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:00,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:00,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:58:00,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 10:58:00,575 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:00,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1006991103, now seen corresponding path program 1 times [2024-11-09 10:58:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101530805] [2024-11-09 10:58:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:00,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:00,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101530805] [2024-11-09 10:58:00,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101530805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:00,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212185287] [2024-11-09 10:58:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:00,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:00,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:00,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:58:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:00,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:58:00,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:00,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:00,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 10:58:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212185287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:00,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:58:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400661221] [2024-11-09 10:58:00,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:00,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:58:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:58:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:58:01,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 10:58:01,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 109 flow. Second operand has 11 states, 11 states have (on average 17.727272727272727) internal successors, (195), 11 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:01,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:01,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 10:58:01,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:01,216 INFO L124 PetriNetUnfolderBase]: 586/1003 cut-off events. [2024-11-09 10:58:01,216 INFO L125 PetriNetUnfolderBase]: For 124/160 co-relation queries the response was YES. [2024-11-09 10:58:01,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 1003 events. 586/1003 cut-off events. For 124/160 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4509 event pairs, 144 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 2076. Up to 638 conditions per place. [2024-11-09 10:58:01,220 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 45 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2024-11-09 10:58:01,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 252 flow [2024-11-09 10:58:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-09 10:58:01,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-11-09 10:58:01,221 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 109 flow. Second operand 5 states and 127 transitions. [2024-11-09 10:58:01,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 252 flow [2024-11-09 10:58:01,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:01,222 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 137 flow [2024-11-09 10:58:01,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-11-09 10:58:01,223 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-11-09 10:58:01,223 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 137 flow [2024-11-09 10:58:01,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.727272727272727) internal successors, (195), 11 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:01,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:01,223 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:01,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:58:01,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:01,428 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:01,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -986674827, now seen corresponding path program 1 times [2024-11-09 10:58:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427144981] [2024-11-09 10:58:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:01,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427144981] [2024-11-09 10:58:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427144981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:01,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480356599] [2024-11-09 10:58:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:01,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:01,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:01,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:01,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:58:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:01,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:58:01,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:01,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:01,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-09 10:58:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:01,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480356599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:01,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:01,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-09 10:58:01,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489195781] [2024-11-09 10:58:01,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:01,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:58:01,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:58:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:58:02,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:58:02,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 137 flow. Second operand has 17 states, 17 states have (on average 20.764705882352942) internal successors, (353), 17 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:02,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:02,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:58:02,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:02,562 INFO L124 PetriNetUnfolderBase]: 1000/1847 cut-off events. [2024-11-09 10:58:02,562 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-09 10:58:02,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 1847 events. 1000/1847 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10675 event pairs, 510 based on Foata normal form. 0/1592 useless extension candidates. Maximal degree in co-relation 2137. Up to 829 conditions per place. [2024-11-09 10:58:02,571 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 90 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-11-09 10:58:02,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 111 transitions, 552 flow [2024-11-09 10:58:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:58:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:58:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-11-09 10:58:02,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6380208333333334 [2024-11-09 10:58:02,573 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 137 flow. Second operand 8 states and 245 transitions. [2024-11-09 10:58:02,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 111 transitions, 552 flow [2024-11-09 10:58:02,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 111 transitions, 534 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:02,576 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 240 flow [2024-11-09 10:58:02,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-09 10:58:02,577 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2024-11-09 10:58:02,577 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 240 flow [2024-11-09 10:58:02,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.764705882352942) internal successors, (353), 17 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:02,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:02,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:02,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 10:58:02,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:02,782 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:02,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1151952547, now seen corresponding path program 1 times [2024-11-09 10:58:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473527724] [2024-11-09 10:58:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:02,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:02,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473527724] [2024-11-09 10:58:02,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473527724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:02,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471457174] [2024-11-09 10:58:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:02,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:02,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:02,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:02,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:58:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:02,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:58:02,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:03,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:03,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 10:58:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471457174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:03,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-09 10:58:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284417521] [2024-11-09 10:58:03,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:03,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:58:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:58:03,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:58:03,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 10:58:03,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 240 flow. Second operand has 14 states, 14 states have (on average 17.357142857142858) internal successors, (243), 14 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:03,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:03,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 10:58:03,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:03,582 INFO L124 PetriNetUnfolderBase]: 1213/2059 cut-off events. [2024-11-09 10:58:03,583 INFO L125 PetriNetUnfolderBase]: For 1256/1328 co-relation queries the response was YES. [2024-11-09 10:58:03,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5204 conditions, 2059 events. 1213/2059 cut-off events. For 1256/1328 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10814 event pairs, 580 based on Foata normal form. 0/1828 useless extension candidates. Maximal degree in co-relation 3261. Up to 1568 conditions per place. [2024-11-09 10:58:03,592 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 73 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-11-09 10:58:03,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 529 flow [2024-11-09 10:58:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-11-09 10:58:03,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-11-09 10:58:03,594 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 240 flow. Second operand 7 states and 184 transitions. [2024-11-09 10:58:03,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 529 flow [2024-11-09 10:58:03,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:03,597 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 293 flow [2024-11-09 10:58:03,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-11-09 10:58:03,598 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-11-09 10:58:03,598 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 293 flow [2024-11-09 10:58:03,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.357142857142858) internal successors, (243), 14 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:03,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:03,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:03,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:58:03,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:03,801 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:03,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 302228251, now seen corresponding path program 2 times [2024-11-09 10:58:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:03,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466262308] [2024-11-09 10:58:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:03,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:58:03,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466262308] [2024-11-09 10:58:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466262308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167953924] [2024-11-09 10:58:03,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:58:03,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:03,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:03,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:03,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:58:04,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 10:58:04,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:58:04,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 10:58:04,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:04,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:58:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:58:04,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:58:04,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167953924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:04,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:04,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-09 10:58:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603601200] [2024-11-09 10:58:04,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:04,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:58:04,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:58:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:58:04,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:58:04,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 293 flow. Second operand has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:04,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:04,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:58:04,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:04,785 INFO L124 PetriNetUnfolderBase]: 971/1767 cut-off events. [2024-11-09 10:58:04,785 INFO L125 PetriNetUnfolderBase]: For 986/986 co-relation queries the response was YES. [2024-11-09 10:58:04,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4558 conditions, 1767 events. 971/1767 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10136 event pairs, 510 based on Foata normal form. 0/1699 useless extension candidates. Maximal degree in co-relation 2954. Up to 1152 conditions per place. [2024-11-09 10:58:04,811 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 58 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-11-09 10:58:04,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 536 flow [2024-11-09 10:58:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-09 10:58:04,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-09 10:58:04,812 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 293 flow. Second operand 5 states and 136 transitions. [2024-11-09 10:58:04,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 536 flow [2024-11-09 10:58:04,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 507 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 10:58:04,816 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 286 flow [2024-11-09 10:58:04,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-09 10:58:04,817 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-11-09 10:58:04,817 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 286 flow [2024-11-09 10:58:04,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:04,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:04,818 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:04,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:58:05,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:05,021 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:05,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:05,022 INFO L85 PathProgramCache]: Analyzing trace with hash 149337207, now seen corresponding path program 2 times [2024-11-09 10:58:05,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:05,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461404790] [2024-11-09 10:58:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:05,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:58:05,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461404790] [2024-11-09 10:58:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461404790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442125306] [2024-11-09 10:58:05,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:58:05,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:05,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:05,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:05,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:58:05,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 10:58:05,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:58:05,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:58:05,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:05,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:58:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:58:05,400 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:58:05,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442125306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:05,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:58:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2024-11-09 10:58:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914423667] [2024-11-09 10:58:05,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:05,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:58:05,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:58:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 10:58:05,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 10:58:05,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:05,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:05,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 10:58:05,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:05,745 INFO L124 PetriNetUnfolderBase]: 1263/2131 cut-off events. [2024-11-09 10:58:05,746 INFO L125 PetriNetUnfolderBase]: For 2496/2496 co-relation queries the response was YES. [2024-11-09 10:58:05,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5969 conditions, 2131 events. 1263/2131 cut-off events. For 2496/2496 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11048 event pairs, 162 based on Foata normal form. 16/1940 useless extension candidates. Maximal degree in co-relation 3751. Up to 1275 conditions per place. [2024-11-09 10:58:05,755 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 65 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-11-09 10:58:05,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 585 flow [2024-11-09 10:58:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-09 10:58:05,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 10:58:05,757 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 286 flow. Second operand 5 states and 132 transitions. [2024-11-09 10:58:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 585 flow [2024-11-09 10:58:05,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 541 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:05,761 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 332 flow [2024-11-09 10:58:05,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-09 10:58:05,762 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-11-09 10:58:05,762 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 332 flow [2024-11-09 10:58:05,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:05,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:05,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:05,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:58:05,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:05,963 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:05,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1074167110, now seen corresponding path program 1 times [2024-11-09 10:58:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:05,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937610226] [2024-11-09 10:58:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:05,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:06,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937610226] [2024-11-09 10:58:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937610226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:06,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861856699] [2024-11-09 10:58:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:06,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:06,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:06,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:06,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:58:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:06,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:58:06,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:06,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:06,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-09 10:58:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:06,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861856699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:06,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:06,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-09 10:58:06,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766781954] [2024-11-09 10:58:06,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:06,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:58:06,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:58:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:58:06,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 10:58:06,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 332 flow. Second operand has 17 states, 17 states have (on average 17.294117647058822) internal successors, (294), 17 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:06,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:06,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 10:58:06,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:06,886 INFO L124 PetriNetUnfolderBase]: 1125/1917 cut-off events. [2024-11-09 10:58:06,886 INFO L125 PetriNetUnfolderBase]: For 1682/1682 co-relation queries the response was YES. [2024-11-09 10:58:06,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5495 conditions, 1917 events. 1125/1917 cut-off events. For 1682/1682 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9833 event pairs, 611 based on Foata normal form. 16/1862 useless extension candidates. Maximal degree in co-relation 3860. Up to 1009 conditions per place. [2024-11-09 10:58:06,895 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 87 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2024-11-09 10:58:06,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 109 transitions, 723 flow [2024-11-09 10:58:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:58:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:58:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-11-09 10:58:06,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2024-11-09 10:58:06,896 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 332 flow. Second operand 8 states and 215 transitions. [2024-11-09 10:58:06,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 109 transitions, 723 flow [2024-11-09 10:58:06,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:06,900 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 428 flow [2024-11-09 10:58:06,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-11-09 10:58:06,902 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2024-11-09 10:58:06,902 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 428 flow [2024-11-09 10:58:06,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.294117647058822) internal successors, (294), 17 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:06,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:06,902 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:06,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:58:07,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 10:58:07,104 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:07,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1778137568, now seen corresponding path program 2 times [2024-11-09 10:58:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842397467] [2024-11-09 10:58:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:58:07,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:07,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842397467] [2024-11-09 10:58:07,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842397467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:07,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648593374] [2024-11-09 10:58:07,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:58:07,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:07,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:07,252 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:07,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:58:07,324 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 10:58:07,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:58:07,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:58:07,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:07,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:58:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:58:07,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:58:07,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648593374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:07,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:58:07,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-09 10:58:07,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495738938] [2024-11-09 10:58:07,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:07,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:07,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:07,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:07,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:58:07,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 10:58:07,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:07,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:07,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 10:58:07,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:07,945 INFO L124 PetriNetUnfolderBase]: 1013/1705 cut-off events. [2024-11-09 10:58:07,945 INFO L125 PetriNetUnfolderBase]: For 2337/2337 co-relation queries the response was YES. [2024-11-09 10:58:07,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 1705 events. 1013/1705 cut-off events. For 2337/2337 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8499 event pairs, 74 based on Foata normal form. 32/1731 useless extension candidates. Maximal degree in co-relation 3450. Up to 780 conditions per place. [2024-11-09 10:58:07,953 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 63 selfloop transitions, 30 changer transitions 0/96 dead transitions. [2024-11-09 10:58:07,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 733 flow [2024-11-09 10:58:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-11-09 10:58:07,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-11-09 10:58:07,954 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 428 flow. Second operand 7 states and 169 transitions. [2024-11-09 10:58:07,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 733 flow [2024-11-09 10:58:07,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 710 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-09 10:58:07,961 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 462 flow [2024-11-09 10:58:07,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-09 10:58:07,961 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2024-11-09 10:58:07,961 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 462 flow [2024-11-09 10:58:07,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:07,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:07,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:07,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 10:58:08,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 10:58:08,162 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:08,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1814258895, now seen corresponding path program 1 times [2024-11-09 10:58:08,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385903290] [2024-11-09 10:58:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:08,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:08,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385903290] [2024-11-09 10:58:08,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385903290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:08,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:08,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:58:08,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098694781] [2024-11-09 10:58:08,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:08,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:58:08,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:08,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:58:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:58:08,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-09 10:58:08,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:08,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:08,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-09 10:58:08,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:08,322 INFO L124 PetriNetUnfolderBase]: 1032/1728 cut-off events. [2024-11-09 10:58:08,322 INFO L125 PetriNetUnfolderBase]: For 3056/3056 co-relation queries the response was YES. [2024-11-09 10:58:08,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5796 conditions, 1728 events. 1032/1728 cut-off events. For 3056/3056 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8557 event pairs, 268 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 3892. Up to 1325 conditions per place. [2024-11-09 10:58:08,334 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 9 changer transitions 1/80 dead transitions. [2024-11-09 10:58:08,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 705 flow [2024-11-09 10:58:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:58:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:58:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-09 10:58:08,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-09 10:58:08,336 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 462 flow. Second operand 3 states and 105 transitions. [2024-11-09 10:58:08,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 705 flow [2024-11-09 10:58:08,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 640 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-09 10:58:08,343 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 479 flow [2024-11-09 10:58:08,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-11-09 10:58:08,345 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 15 predicate places. [2024-11-09 10:58:08,345 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 479 flow [2024-11-09 10:58:08,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:08,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:08,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:08,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:58:08,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:08,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1602193766, now seen corresponding path program 1 times [2024-11-09 10:58:08,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:08,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858190041] [2024-11-09 10:58:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:08,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:08,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858190041] [2024-11-09 10:58:08,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858190041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:08,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:08,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:58:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213314117] [2024-11-09 10:58:08,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:08,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:58:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:58:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:58:08,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:58:08,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:08,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:08,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:58:08,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:08,646 INFO L124 PetriNetUnfolderBase]: 1065/1787 cut-off events. [2024-11-09 10:58:08,646 INFO L125 PetriNetUnfolderBase]: For 3311/3311 co-relation queries the response was YES. [2024-11-09 10:58:08,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 1787 events. 1065/1787 cut-off events. For 3311/3311 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9387 event pairs, 346 based on Foata normal form. 18/1803 useless extension candidates. Maximal degree in co-relation 3946. Up to 986 conditions per place. [2024-11-09 10:58:08,656 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 129 selfloop transitions, 9 changer transitions 0/140 dead transitions. [2024-11-09 10:58:08,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 140 transitions, 1263 flow [2024-11-09 10:58:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-11-09 10:58:08,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-11-09 10:58:08,657 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 479 flow. Second operand 5 states and 163 transitions. [2024-11-09 10:58:08,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 140 transitions, 1263 flow [2024-11-09 10:58:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 140 transitions, 1228 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:08,667 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 539 flow [2024-11-09 10:58:08,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-11-09 10:58:08,668 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-09 10:58:08,668 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 539 flow [2024-11-09 10:58:08,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:08,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:08,668 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:08,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:58:08,669 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:08,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:08,669 INFO L85 PathProgramCache]: Analyzing trace with hash 800337220, now seen corresponding path program 2 times [2024-11-09 10:58:08,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:08,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40905933] [2024-11-09 10:58:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:08,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:08,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:08,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40905933] [2024-11-09 10:58:08,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40905933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:08,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:08,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:58:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279868736] [2024-11-09 10:58:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:08,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:58:08,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:58:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:58:08,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:08,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 539 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:08,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:08,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:08,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:08,900 INFO L124 PetriNetUnfolderBase]: 911/1515 cut-off events. [2024-11-09 10:58:08,900 INFO L125 PetriNetUnfolderBase]: For 3295/3295 co-relation queries the response was YES. [2024-11-09 10:58:08,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 1515 events. 911/1515 cut-off events. For 3295/3295 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7071 event pairs, 432 based on Foata normal form. 32/1547 useless extension candidates. Maximal degree in co-relation 3604. Up to 1186 conditions per place. [2024-11-09 10:58:08,905 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 76 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-11-09 10:58:08,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 810 flow [2024-11-09 10:58:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:58:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:58:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-09 10:58:08,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-09 10:58:08,907 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 539 flow. Second operand 4 states and 118 transitions. [2024-11-09 10:58:08,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 810 flow [2024-11-09 10:58:08,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 783 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:08,912 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 500 flow [2024-11-09 10:58:08,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-09 10:58:08,912 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2024-11-09 10:58:08,913 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 500 flow [2024-11-09 10:58:08,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:08,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:08,913 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:08,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:58:08,913 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:08,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -770409391, now seen corresponding path program 1 times [2024-11-09 10:58:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198080350] [2024-11-09 10:58:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:09,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:09,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198080350] [2024-11-09 10:58:09,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198080350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:09,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:09,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164019407] [2024-11-09 10:58:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:09,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:09,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:09,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:09,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:09,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:09,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:09,283 INFO L124 PetriNetUnfolderBase]: 1051/1767 cut-off events. [2024-11-09 10:58:09,284 INFO L125 PetriNetUnfolderBase]: For 4564/4564 co-relation queries the response was YES. [2024-11-09 10:58:09,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6796 conditions, 1767 events. 1051/1767 cut-off events. For 4564/4564 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9071 event pairs, 300 based on Foata normal form. 24/1791 useless extension candidates. Maximal degree in co-relation 4498. Up to 882 conditions per place. [2024-11-09 10:58:09,290 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 116 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-11-09 10:58:09,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 137 transitions, 1266 flow [2024-11-09 10:58:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:58:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:58:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-11-09 10:58:09,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-09 10:58:09,291 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 500 flow. Second operand 6 states and 184 transitions. [2024-11-09 10:58:09,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 137 transitions, 1266 flow [2024-11-09 10:58:09,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 137 transitions, 1223 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:09,299 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 697 flow [2024-11-09 10:58:09,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=697, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-09 10:58:09,300 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-09 10:58:09,300 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 697 flow [2024-11-09 10:58:09,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:09,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:09,301 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:09,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 10:58:09,301 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:09,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1922395999, now seen corresponding path program 2 times [2024-11-09 10:58:09,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:09,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406817627] [2024-11-09 10:58:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:09,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406817627] [2024-11-09 10:58:09,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406817627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:09,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:09,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:09,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010685976] [2024-11-09 10:58:09,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:09,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:09,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:09,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 697 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:09,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:09,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:09,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:09,701 INFO L124 PetriNetUnfolderBase]: 1301/2205 cut-off events. [2024-11-09 10:58:09,701 INFO L125 PetriNetUnfolderBase]: For 7092/7092 co-relation queries the response was YES. [2024-11-09 10:58:09,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8967 conditions, 2205 events. 1301/2205 cut-off events. For 7092/7092 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11449 event pairs, 444 based on Foata normal form. 24/2229 useless extension candidates. Maximal degree in co-relation 6760. Up to 1168 conditions per place. [2024-11-09 10:58:09,713 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 112 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-11-09 10:58:09,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 139 transitions, 1410 flow [2024-11-09 10:58:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-11-09 10:58:09,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5863095238095238 [2024-11-09 10:58:09,714 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 697 flow. Second operand 7 states and 197 transitions. [2024-11-09 10:58:09,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 139 transitions, 1410 flow [2024-11-09 10:58:09,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 139 transitions, 1378 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:09,732 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 870 flow [2024-11-09 10:58:09,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2024-11-09 10:58:09,732 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 40 predicate places. [2024-11-09 10:58:09,732 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 870 flow [2024-11-09 10:58:09,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:09,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:09,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:09,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 10:58:09,733 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:09,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1376908191, now seen corresponding path program 3 times [2024-11-09 10:58:09,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:09,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007075902] [2024-11-09 10:58:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:09,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:09,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007075902] [2024-11-09 10:58:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007075902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:09,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:58:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325632039] [2024-11-09 10:58:09,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:09,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:58:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:58:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:58:09,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:09,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:09,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:09,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:09,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:10,036 INFO L124 PetriNetUnfolderBase]: 1281/2149 cut-off events. [2024-11-09 10:58:10,037 INFO L125 PetriNetUnfolderBase]: For 9652/9652 co-relation queries the response was YES. [2024-11-09 10:58:10,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9287 conditions, 2149 events. 1281/2149 cut-off events. For 9652/9652 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11144 event pairs, 406 based on Foata normal form. 6/2155 useless extension candidates. Maximal degree in co-relation 8317. Up to 1086 conditions per place. [2024-11-09 10:58:10,065 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 106 selfloop transitions, 28 changer transitions 0/135 dead transitions. [2024-11-09 10:58:10,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1491 flow [2024-11-09 10:58:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-09 10:58:10,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-09 10:58:10,066 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 870 flow. Second operand 5 states and 155 transitions. [2024-11-09 10:58:10,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1491 flow [2024-11-09 10:58:10,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 135 transitions, 1441 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:10,082 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 958 flow [2024-11-09 10:58:10,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=958, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-11-09 10:58:10,083 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 43 predicate places. [2024-11-09 10:58:10,083 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 958 flow [2024-11-09 10:58:10,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:10,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:10,083 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:10,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 10:58:10,083 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:10,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1326993619, now seen corresponding path program 4 times [2024-11-09 10:58:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:10,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159383832] [2024-11-09 10:58:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:10,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:10,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:10,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159383832] [2024-11-09 10:58:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159383832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:10,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:10,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:58:10,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656549785] [2024-11-09 10:58:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:10,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:58:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:58:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:58:10,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:10,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 958 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:10,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:10,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:10,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:10,342 INFO L124 PetriNetUnfolderBase]: 1275/2143 cut-off events. [2024-11-09 10:58:10,343 INFO L125 PetriNetUnfolderBase]: For 11228/11228 co-relation queries the response was YES. [2024-11-09 10:58:10,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 2143 events. 1275/2143 cut-off events. For 11228/11228 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10923 event pairs, 590 based on Foata normal form. 6/2149 useless extension candidates. Maximal degree in co-relation 8658. Up to 1690 conditions per place. [2024-11-09 10:58:10,352 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 84 selfloop transitions, 35 changer transitions 0/120 dead transitions. [2024-11-09 10:58:10,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 120 transitions, 1493 flow [2024-11-09 10:58:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-09 10:58:10,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-09 10:58:10,355 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 958 flow. Second operand 5 states and 145 transitions. [2024-11-09 10:58:10,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 120 transitions, 1493 flow [2024-11-09 10:58:10,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 120 transitions, 1437 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:10,373 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 1220 flow [2024-11-09 10:58:10,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1220, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2024-11-09 10:58:10,374 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2024-11-09 10:58:10,374 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 1220 flow [2024-11-09 10:58:10,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:10,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:10,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:10,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:58:10,374 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:10,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 176837719, now seen corresponding path program 5 times [2024-11-09 10:58:10,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:10,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282734029] [2024-11-09 10:58:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:10,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:10,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:10,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282734029] [2024-11-09 10:58:10,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282734029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:10,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:10,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:10,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680521932] [2024-11-09 10:58:10,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:10,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:10,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:10,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:10,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:10,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 1220 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:10,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:10,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:10,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:10,672 INFO L124 PetriNetUnfolderBase]: 1233/2059 cut-off events. [2024-11-09 10:58:10,673 INFO L125 PetriNetUnfolderBase]: For 11890/11890 co-relation queries the response was YES. [2024-11-09 10:58:10,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9303 conditions, 2059 events. 1233/2059 cut-off events. For 11890/11890 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10233 event pairs, 538 based on Foata normal form. 24/2083 useless extension candidates. Maximal degree in co-relation 8449. Up to 1558 conditions per place. [2024-11-09 10:58:10,682 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 94 selfloop transitions, 37 changer transitions 0/132 dead transitions. [2024-11-09 10:58:10,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 1657 flow [2024-11-09 10:58:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:58:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:58:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-11-09 10:58:10,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-09 10:58:10,683 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 1220 flow. Second operand 6 states and 171 transitions. [2024-11-09 10:58:10,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 1657 flow [2024-11-09 10:58:10,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 132 transitions, 1607 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:10,710 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 1309 flow [2024-11-09 10:58:10,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1309, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-11-09 10:58:10,711 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 55 predicate places. [2024-11-09 10:58:10,711 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 1309 flow [2024-11-09 10:58:10,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:10,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:10,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:10,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 10:58:10,711 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:10,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash -118870281, now seen corresponding path program 1 times [2024-11-09 10:58:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799142503] [2024-11-09 10:58:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:10,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799142503] [2024-11-09 10:58:10,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799142503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539328775] [2024-11-09 10:58:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:10,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:10,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:10,885 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:10,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:58:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:10,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:58:10,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:10,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 10:58:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:11,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:11,031 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:58:11,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 10:58:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:58:11,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539328775] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:11,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:58:11,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 4] total 12 [2024-11-09 10:58:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849660563] [2024-11-09 10:58:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:11,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:58:11,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:58:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:58:11,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-09 10:58:11,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 1309 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:11,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:11,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-09 10:58:11,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:11,347 INFO L124 PetriNetUnfolderBase]: 1816/3150 cut-off events. [2024-11-09 10:58:11,347 INFO L125 PetriNetUnfolderBase]: For 14693/14693 co-relation queries the response was YES. [2024-11-09 10:58:11,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13120 conditions, 3150 events. 1816/3150 cut-off events. For 14693/14693 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17415 event pairs, 272 based on Foata normal form. 4/3140 useless extension candidates. Maximal degree in co-relation 12267. Up to 1669 conditions per place. [2024-11-09 10:58:11,360 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 109 selfloop transitions, 60 changer transitions 1/173 dead transitions. [2024-11-09 10:58:11,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 173 transitions, 2130 flow [2024-11-09 10:58:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:58:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:58:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-09 10:58:11,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-11-09 10:58:11,361 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 1309 flow. Second operand 4 states and 147 transitions. [2024-11-09 10:58:11,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 173 transitions, 2130 flow [2024-11-09 10:58:11,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 173 transitions, 2046 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:11,385 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1701 flow [2024-11-09 10:58:11,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1701, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-11-09 10:58:11,386 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 58 predicate places. [2024-11-09 10:58:11,386 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1701 flow [2024-11-09 10:58:11,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:11,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:11,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:11,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 10:58:11,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 10:58:11,587 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:11,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1440040809, now seen corresponding path program 2 times [2024-11-09 10:58:11,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:11,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352241497] [2024-11-09 10:58:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:11,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352241497] [2024-11-09 10:58:11,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352241497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:11,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:11,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 10:58:11,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496878452] [2024-11-09 10:58:11,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:11,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:58:11,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:58:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:58:11,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:11,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1701 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:11,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:11,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:11,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:12,092 INFO L124 PetriNetUnfolderBase]: 2139/3575 cut-off events. [2024-11-09 10:58:12,093 INFO L125 PetriNetUnfolderBase]: For 18178/18178 co-relation queries the response was YES. [2024-11-09 10:58:12,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16172 conditions, 3575 events. 2139/3575 cut-off events. For 18178/18178 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19211 event pairs, 958 based on Foata normal form. 16/3591 useless extension candidates. Maximal degree in co-relation 15215. Up to 2474 conditions per place. [2024-11-09 10:58:12,109 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 175 selfloop transitions, 42 changer transitions 0/218 dead transitions. [2024-11-09 10:58:12,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 218 transitions, 3036 flow [2024-11-09 10:58:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-11-09 10:58:12,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-09 10:58:12,111 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1701 flow. Second operand 7 states and 208 transitions. [2024-11-09 10:58:12,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 218 transitions, 3036 flow [2024-11-09 10:58:12,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 218 transitions, 3022 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-09 10:58:12,149 INFO L231 Difference]: Finished difference. Result has 116 places, 147 transitions, 2124 flow [2024-11-09 10:58:12,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2124, PETRI_PLACES=116, PETRI_TRANSITIONS=147} [2024-11-09 10:58:12,149 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2024-11-09 10:58:12,149 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 147 transitions, 2124 flow [2024-11-09 10:58:12,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:12,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:12,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:12,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 10:58:12,150 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:12,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash 604188335, now seen corresponding path program 3 times [2024-11-09 10:58:12,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:12,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649867080] [2024-11-09 10:58:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:12,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:12,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649867080] [2024-11-09 10:58:12,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649867080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532241841] [2024-11-09 10:58:12,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:58:12,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:12,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:12,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:12,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:58:12,351 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:58:12,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:58:12,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:58:12,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:12,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 10:58:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:12,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:12,469 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:58:12,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 10:58:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:58:12,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532241841] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:12,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:58:12,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 5] total 12 [2024-11-09 10:58:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916381499] [2024-11-09 10:58:12,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:12,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:58:12,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:58:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:58:12,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-09 10:58:12,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 147 transitions, 2124 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:12,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:12,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-09 10:58:12,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:12,934 INFO L124 PetriNetUnfolderBase]: 2484/4312 cut-off events. [2024-11-09 10:58:12,934 INFO L125 PetriNetUnfolderBase]: For 24229/24229 co-relation queries the response was YES. [2024-11-09 10:58:12,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20004 conditions, 4312 events. 2484/4312 cut-off events. For 24229/24229 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 25682 event pairs, 646 based on Foata normal form. 4/4298 useless extension candidates. Maximal degree in co-relation 18899. Up to 2733 conditions per place. [2024-11-09 10:58:12,953 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 142 selfloop transitions, 77 changer transitions 1/223 dead transitions. [2024-11-09 10:58:12,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 223 transitions, 3237 flow [2024-11-09 10:58:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:58:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:58:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-09 10:58:12,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-11-09 10:58:12,954 INFO L175 Difference]: Start difference. First operand has 116 places, 147 transitions, 2124 flow. Second operand 4 states and 145 transitions. [2024-11-09 10:58:12,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 223 transitions, 3237 flow [2024-11-09 10:58:12,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 223 transitions, 3178 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:13,000 INFO L231 Difference]: Finished difference. Result has 120 places, 179 transitions, 2745 flow [2024-11-09 10:58:13,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2745, PETRI_PLACES=120, PETRI_TRANSITIONS=179} [2024-11-09 10:58:13,000 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 73 predicate places. [2024-11-09 10:58:13,000 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 179 transitions, 2745 flow [2024-11-09 10:58:13,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:13,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:13,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:13,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 10:58:13,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 10:58:13,201 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:13,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1783516592, now seen corresponding path program 1 times [2024-11-09 10:58:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:13,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096038836] [2024-11-09 10:58:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096038836] [2024-11-09 10:58:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096038836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676866962] [2024-11-09 10:58:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:13,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:13,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:13,286 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:13,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:58:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:13,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:58:13,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:13,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676866962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:13,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 10:58:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223841044] [2024-11-09 10:58:13,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:13,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:58:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:58:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:58:13,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:58:13,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 179 transitions, 2745 flow. Second operand has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:13,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:13,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:58:13,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:14,450 INFO L124 PetriNetUnfolderBase]: 3417/6075 cut-off events. [2024-11-09 10:58:14,450 INFO L125 PetriNetUnfolderBase]: For 33664/33672 co-relation queries the response was YES. [2024-11-09 10:58:14,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27966 conditions, 6075 events. 3417/6075 cut-off events. For 33664/33672 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 39740 event pairs, 1107 based on Foata normal form. 26/6101 useless extension candidates. Maximal degree in co-relation 26729. Up to 2642 conditions per place. [2024-11-09 10:58:14,481 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 292 selfloop transitions, 139 changer transitions 5/438 dead transitions. [2024-11-09 10:58:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 438 transitions, 5768 flow [2024-11-09 10:58:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:58:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:58:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 533 transitions. [2024-11-09 10:58:14,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5844298245614035 [2024-11-09 10:58:14,482 INFO L175 Difference]: Start difference. First operand has 120 places, 179 transitions, 2745 flow. Second operand 19 states and 533 transitions. [2024-11-09 10:58:14,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 438 transitions, 5768 flow [2024-11-09 10:58:14,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 438 transitions, 5712 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-11-09 10:58:14,547 INFO L231 Difference]: Finished difference. Result has 150 places, 273 transitions, 4276 flow [2024-11-09 10:58:14,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4276, PETRI_PLACES=150, PETRI_TRANSITIONS=273} [2024-11-09 10:58:14,548 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 103 predicate places. [2024-11-09 10:58:14,548 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 273 transitions, 4276 flow [2024-11-09 10:58:14,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:14,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:14,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:14,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 10:58:14,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 10:58:14,749 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:14,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:14,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1151030802, now seen corresponding path program 2 times [2024-11-09 10:58:14,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:14,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613655266] [2024-11-09 10:58:14,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:14,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613655266] [2024-11-09 10:58:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613655266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011710601] [2024-11-09 10:58:15,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:58:15,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:15,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:15,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:15,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:58:15,093 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:58:15,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:58:15,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:58:15,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:15,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:15,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011710601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:15,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-09 10:58:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218486359] [2024-11-09 10:58:15,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:15,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:58:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:58:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:58:15,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:15,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 273 transitions, 4276 flow. Second operand has 18 states, 18 states have (on average 20.38888888888889) internal successors, (367), 18 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:15,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:15,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:15,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:17,460 INFO L124 PetriNetUnfolderBase]: 4821/8555 cut-off events. [2024-11-09 10:58:17,461 INFO L125 PetriNetUnfolderBase]: For 66362/66362 co-relation queries the response was YES. [2024-11-09 10:58:17,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45389 conditions, 8555 events. 4821/8555 cut-off events. For 66362/66362 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 59947 event pairs, 1016 based on Foata normal form. 104/8659 useless extension candidates. Maximal degree in co-relation 44071. Up to 2810 conditions per place. [2024-11-09 10:58:17,511 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 439 selfloop transitions, 335 changer transitions 0/775 dead transitions. [2024-11-09 10:58:17,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 775 transitions, 11551 flow [2024-11-09 10:58:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 10:58:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 10:58:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 738 transitions. [2024-11-09 10:58:17,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-11-09 10:58:17,514 INFO L175 Difference]: Start difference. First operand has 150 places, 273 transitions, 4276 flow. Second operand 25 states and 738 transitions. [2024-11-09 10:58:17,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 775 transitions, 11551 flow [2024-11-09 10:58:17,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 775 transitions, 11255 flow, removed 116 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:17,716 INFO L231 Difference]: Finished difference. Result has 190 places, 531 transitions, 8734 flow [2024-11-09 10:58:17,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4088, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8734, PETRI_PLACES=190, PETRI_TRANSITIONS=531} [2024-11-09 10:58:17,717 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 143 predicate places. [2024-11-09 10:58:17,717 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 531 transitions, 8734 flow [2024-11-09 10:58:17,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.38888888888889) internal successors, (367), 18 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:17,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:17,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:17,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 10:58:17,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 10:58:17,918 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:17,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:17,918 INFO L85 PathProgramCache]: Analyzing trace with hash -364067844, now seen corresponding path program 3 times [2024-11-09 10:58:17,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:17,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673538935] [2024-11-09 10:58:17,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:17,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673538935] [2024-11-09 10:58:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673538935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818965069] [2024-11-09 10:58:18,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:58:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:18,052 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:18,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:58:18,114 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:58:18,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:58:18,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:58:18,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:18,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818965069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:18,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:18,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-09 10:58:18,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861241574] [2024-11-09 10:58:18,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:18,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:58:18,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:58:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:58:18,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:58:18,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 531 transitions, 8734 flow. Second operand has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:18,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:18,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:58:18,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:20,879 INFO L124 PetriNetUnfolderBase]: 6051/10941 cut-off events. [2024-11-09 10:58:20,879 INFO L125 PetriNetUnfolderBase]: For 126411/126411 co-relation queries the response was YES. [2024-11-09 10:58:20,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69474 conditions, 10941 events. 6051/10941 cut-off events. For 126411/126411 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 81999 event pairs, 1982 based on Foata normal form. 20/10961 useless extension candidates. Maximal degree in co-relation 67845. Up to 6178 conditions per place. [2024-11-09 10:58:20,960 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 611 selfloop transitions, 372 changer transitions 14/998 dead transitions. [2024-11-09 10:58:20,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 998 transitions, 17273 flow [2024-11-09 10:58:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 10:58:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 10:58:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 648 transitions. [2024-11-09 10:58:20,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-09 10:58:20,962 INFO L175 Difference]: Start difference. First operand has 190 places, 531 transitions, 8734 flow. Second operand 24 states and 648 transitions. [2024-11-09 10:58:20,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 998 transitions, 17273 flow [2024-11-09 10:58:21,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 998 transitions, 16073 flow, removed 556 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:21,792 INFO L231 Difference]: Finished difference. Result has 227 places, 796 transitions, 14055 flow [2024-11-09 10:58:21,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7937, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=14055, PETRI_PLACES=227, PETRI_TRANSITIONS=796} [2024-11-09 10:58:21,793 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 180 predicate places. [2024-11-09 10:58:21,793 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 796 transitions, 14055 flow [2024-11-09 10:58:21,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:21,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:21,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:21,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 10:58:21,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:21,994 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:58:21,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1869568981, now seen corresponding path program 1 times [2024-11-09 10:58:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:21,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653166143] [2024-11-09 10:58:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:22,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653166143] [2024-11-09 10:58:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653166143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185482671] [2024-11-09 10:58:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:22,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:22,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:22,146 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:58:22,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:58:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:22,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 10:58:22,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:22,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 10:58:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:22,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:22,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 80 [2024-11-09 10:58:22,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:58:22,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 139 treesize of output 159 [2024-11-09 10:58:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:24,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185482671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:24,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:24,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-09 10:58:24,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105510214] [2024-11-09 10:58:24,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:24,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 10:58:24,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 10:58:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-09 10:58:25,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-09 10:58:25,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 796 transitions, 14055 flow. Second operand has 20 states, 20 states have (on average 22.15) internal successors, (443), 20 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:58:25,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:25,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-09 10:58:25,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:28,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:58:32,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:58:37,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:58:41,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:58:46,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:58:51,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:58:55,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:58:59,763 INFO L124 PetriNetUnfolderBase]: 9476/16797 cut-off events. [2024-11-09 10:58:59,763 INFO L125 PetriNetUnfolderBase]: For 239695/239705 co-relation queries the response was YES. [2024-11-09 10:58:59,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114546 conditions, 16797 events. 9476/16797 cut-off events. For 239695/239705 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 129373 event pairs, 769 based on Foata normal form. 77/16874 useless extension candidates. Maximal degree in co-relation 113193. Up to 3526 conditions per place. [2024-11-09 10:58:59,929 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 779 selfloop transitions, 585 changer transitions 775/2167 dead transitions. [2024-11-09 10:58:59,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 2167 transitions, 37785 flow [2024-11-09 10:58:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-09 10:58:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-09 10:58:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1769 transitions. [2024-11-09 10:58:59,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5849867724867724 [2024-11-09 10:58:59,933 INFO L175 Difference]: Start difference. First operand has 227 places, 796 transitions, 14055 flow. Second operand 63 states and 1769 transitions. [2024-11-09 10:58:59,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 2167 transitions, 37785 flow [2024-11-09 10:59:02,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 2167 transitions, 36459 flow, removed 608 selfloop flow, removed 6 redundant places. [2024-11-09 10:59:02,146 INFO L231 Difference]: Finished difference. Result has 313 places, 919 transitions, 16981 flow [2024-11-09 10:59:02,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13453, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=16981, PETRI_PLACES=313, PETRI_TRANSITIONS=919} [2024-11-09 10:59:02,147 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 266 predicate places. [2024-11-09 10:59:02,147 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 919 transitions, 16981 flow [2024-11-09 10:59:02,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.15) internal successors, (443), 20 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:59:02,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:59:02,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:59:02,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 10:59:02,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 10:59:02,348 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:59:02,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:59:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1461555802, now seen corresponding path program 4 times [2024-11-09 10:59:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:59:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912709972] [2024-11-09 10:59:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:59:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:59:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:59:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:59:02,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:59:02,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912709972] [2024-11-09 10:59:02,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912709972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:59:02,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316996371] [2024-11-09 10:59:02,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:59:02,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:59:02,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:59:02,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:59:02,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:59:02,704 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:59:02,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:59:02,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:59:02,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:59:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:59:02,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:59:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:59:02,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316996371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:59:02,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:59:02,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-09 10:59:02,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814967371] [2024-11-09 10:59:02,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:59:02,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:59:02,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:59:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:59:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:59:02,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:59:02,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 919 transitions, 16981 flow. Second operand has 16 states, 16 states have (on average 20.75) internal successors, (332), 16 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:59:02,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:59:02,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:59:02,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:59:08,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 10:59:13,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 10:59:15,445 INFO L124 PetriNetUnfolderBase]: 7452/13199 cut-off events. [2024-11-09 10:59:15,445 INFO L125 PetriNetUnfolderBase]: For 247577/247577 co-relation queries the response was YES. [2024-11-09 10:59:15,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98979 conditions, 13199 events. 7452/13199 cut-off events. For 247577/247577 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 97869 event pairs, 2127 based on Foata normal form. 208/13407 useless extension candidates. Maximal degree in co-relation 98403. Up to 6862 conditions per place. [2024-11-09 10:59:15,579 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 875 selfloop transitions, 686 changer transitions 0/1562 dead transitions. [2024-11-09 10:59:15,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1562 transitions, 30829 flow [2024-11-09 10:59:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-09 10:59:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-09 10:59:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1060 transitions. [2024-11-09 10:59:15,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5386178861788617 [2024-11-09 10:59:15,581 INFO L175 Difference]: Start difference. First operand has 313 places, 919 transitions, 16981 flow. Second operand 41 states and 1060 transitions. [2024-11-09 10:59:15,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1562 transitions, 30829 flow [2024-11-09 10:59:17,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 1562 transitions, 28329 flow, removed 1032 selfloop flow, removed 20 redundant places. [2024-11-09 10:59:17,405 INFO L231 Difference]: Finished difference. Result has 344 places, 1215 transitions, 23371 flow [2024-11-09 10:59:17,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=15110, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=23371, PETRI_PLACES=344, PETRI_TRANSITIONS=1215} [2024-11-09 10:59:17,406 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 297 predicate places. [2024-11-09 10:59:17,407 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 1215 transitions, 23371 flow [2024-11-09 10:59:17,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.75) internal successors, (332), 16 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:59:17,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:59:17,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:59:17,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 10:59:17,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 10:59:17,608 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:59:17,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:59:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1976017194, now seen corresponding path program 5 times [2024-11-09 10:59:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:59:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524452518] [2024-11-09 10:59:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:59:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:59:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:59:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:59:17,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:59:17,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524452518] [2024-11-09 10:59:17,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524452518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:59:17,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617649536] [2024-11-09 10:59:17,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:59:17,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:59:17,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:59:17,772 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:59:17,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 10:59:17,834 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:59:17,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:59:17,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:59:17,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:59:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:59:17,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:59:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:59:17,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617649536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:59:17,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:59:17,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:59:17,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568395231] [2024-11-09 10:59:17,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:59:17,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:59:17,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:59:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:59:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:59:17,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 10:59:17,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 1215 transitions, 23371 flow. Second operand has 15 states, 15 states have (on average 20.533333333333335) internal successors, (308), 15 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:59:17,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:59:17,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 10:59:17,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:59:26,343 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 30 DAG size of output: 25 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)