./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/unroll-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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-2.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 8c7125507f231f46c946ebcd57e8b56859ee58b969eed99ccdbcf88141d9e219 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:42:38,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:42:38,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:42:38,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:42:38,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:42:38,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:42:38,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:42:38,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:42:38,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:42:38,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:42:38,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:42:38,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:42:38,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:42:38,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:42:38,439 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:42:38,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:42:38,440 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:42:38,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:42:38,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:42:38,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:42:38,441 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:42:38,441 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:42:38,441 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:42:38,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:42:38,442 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:42:38,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:42:38,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:42:38,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:42:38,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:42:38,443 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:42:38,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:42:38,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:42:38,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:42:38,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:42:38,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:42:38,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:42:38,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:42:38,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:42:38,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:42:38,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:42:38,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:42:38,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:42:38,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7125507f231f46c946ebcd57e8b56859ee58b969eed99ccdbcf88141d9e219 [2024-11-17 03:42:38,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:42:38,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:42:38,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:42:38,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:42:38,752 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:42:38,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-2.wvr.c [2024-11-17 03:42:40,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:42:40,399 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:42:40,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-2.wvr.c [2024-11-17 03:42:40,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c70c20c5/8a0cd552a86f4568b10b5cd0c29a4275/FLAG2c465525f [2024-11-17 03:42:40,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c70c20c5/8a0cd552a86f4568b10b5cd0c29a4275 [2024-11-17 03:42:40,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:42:40,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:42:40,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:42:40,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:42:40,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:42:40,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e13060a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40, skipping insertion in model container [2024-11-17 03:42:40,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,475 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:42:40,670 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:42:40,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:42:40,681 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:42:40,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:42:40,727 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:42:40,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40 WrapperNode [2024-11-17 03:42:40,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:42:40,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:42:40,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:42:40,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:42:40,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,765 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 126 [2024-11-17 03:42:40,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:42:40,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:42:40,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:42:40,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:42:40,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,784 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,806 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2024-11-17 03:42:40,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,813 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:42:40,820 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:42:40,820 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:42:40,820 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:42:40,821 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (1/1) ... [2024-11-17 03:42:40,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:42:40,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:40,869 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) [2024-11-17 03:42:40,874 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 [2024-11-17 03:42:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:42:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:42:40,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:42:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 03:42:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 03:42:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:42:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:42:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:42:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:42:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:42:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:42:40,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:42:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:42:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:42:40,934 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:42:41,089 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:42:41,091 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:42:41,463 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:42:41,464 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:42:41,676 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:42:41,676 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:42:41,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:42:41 BoogieIcfgContainer [2024-11-17 03:42:41,677 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:42:41,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:42:41,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:42:41,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:42:41,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:42:40" (1/3) ... [2024-11-17 03:42:41,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3775d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:42:41, skipping insertion in model container [2024-11-17 03:42:41,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:40" (2/3) ... [2024-11-17 03:42:41,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3775d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:42:41, skipping insertion in model container [2024-11-17 03:42:41,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:42:41" (3/3) ... [2024-11-17 03:42:41,690 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2024-11-17 03:42:41,709 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:42:41,710 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-17 03:42:41,710 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:42:41,780 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:42:41,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 100 flow [2024-11-17 03:42:41,846 INFO L124 PetriNetUnfolderBase]: 6/41 cut-off events. [2024-11-17 03:42:41,847 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:42:41,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 6/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-17 03:42:41,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 100 flow [2024-11-17 03:42:41,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 40 transitions, 92 flow [2024-11-17 03:42:41,877 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:42:41,888 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;@6a688d2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:42:41,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 03:42:41,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:42:41,894 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2024-11-17 03:42:41,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:42:41,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:41,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:42:41,895 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:41,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash 11537450, now seen corresponding path program 1 times [2024-11-17 03:42:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399100157] [2024-11-17 03:42:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:42,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399100157] [2024-11-17 03:42:42,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399100157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:42,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:42,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:42:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595059985] [2024-11-17 03:42:42,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:42,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:42:42,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:42,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:42:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:42:42,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:42:42,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-17 03:42:42,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:42,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:42:42,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:42,391 INFO L124 PetriNetUnfolderBase]: 75/189 cut-off events. [2024-11-17 03:42:42,391 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-17 03:42:42,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 189 events. 75/189 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 820 event pairs, 53 based on Foata normal form. 23/191 useless extension candidates. Maximal degree in co-relation 292. Up to 131 conditions per place. [2024-11-17 03:42:42,398 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 18 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-17 03:42:42,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 120 flow [2024-11-17 03:42:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:42:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:42:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-17 03:42:42,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5891472868217055 [2024-11-17 03:42:42,414 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 92 flow. Second operand 3 states and 76 transitions. [2024-11-17 03:42:42,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 120 flow [2024-11-17 03:42:42,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:42:42,420 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 76 flow [2024-11-17 03:42:42,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-17 03:42:42,425 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2024-11-17 03:42:42,426 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 76 flow [2024-11-17 03:42:42,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-17 03:42:42,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:42,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:42:42,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:42:42,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:42,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:42,428 INFO L85 PathProgramCache]: Analyzing trace with hash 11537451, now seen corresponding path program 1 times [2024-11-17 03:42:42,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:42,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277060007] [2024-11-17 03:42:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:42,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277060007] [2024-11-17 03:42:42,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277060007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:42,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:42,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:42:42,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108132159] [2024-11-17 03:42:42,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:42,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:42:42,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:42:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:42:42,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:42,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-17 03:42:42,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:42,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:42,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:43,016 INFO L124 PetriNetUnfolderBase]: 75/192 cut-off events. [2024-11-17 03:42:43,018 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 03:42:43,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 192 events. 75/192 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 819 event pairs, 53 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 316. Up to 136 conditions per place. [2024-11-17 03:42:43,021 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 22 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-11-17 03:42:43,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 128 flow [2024-11-17 03:42:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:42:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:42:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-17 03:42:43,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-11-17 03:42:43,024 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 76 flow. Second operand 3 states and 74 transitions. [2024-11-17 03:42:43,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 128 flow [2024-11-17 03:42:43,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:43,029 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 86 flow [2024-11-17 03:42:43,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-17 03:42:43,030 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2024-11-17 03:42:43,030 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 86 flow [2024-11-17 03:42:43,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-17 03:42:43,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:43,031 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-17 03:42:43,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:42:43,032 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:43,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash 115184887, now seen corresponding path program 1 times [2024-11-17 03:42:43,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155721508] [2024-11-17 03:42:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:43,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:43,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155721508] [2024-11-17 03:42:43,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155721508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:43,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401846401] [2024-11-17 03:42:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:43,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:43,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:43,462 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) [2024-11-17 03:42:43,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:42:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:43,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:42:43,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:43,611 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 8 treesize of output 1 [2024-11-17 03:42:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:43,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:44,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401846401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:44,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:44,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 03:42:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024821634] [2024-11-17 03:42:44,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:44,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:42:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:42:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:42:44,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:44,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 86 flow. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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) [2024-11-17 03:42:44,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:44,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:44,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:44,392 INFO L124 PetriNetUnfolderBase]: 75/191 cut-off events. [2024-11-17 03:42:44,393 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-17 03:42:44,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 191 events. 75/191 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 816 event pairs, 53 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 327. Up to 131 conditions per place. [2024-11-17 03:42:44,395 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 18 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-11-17 03:42:44,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 130 flow [2024-11-17 03:42:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:42:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:42:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-17 03:42:44,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2024-11-17 03:42:44,399 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 86 flow. Second operand 5 states and 104 transitions. [2024-11-17 03:42:44,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 130 flow [2024-11-17 03:42:44,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:42:44,401 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 98 flow [2024-11-17 03:42:44,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-17 03:42:44,402 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-17 03:42:44,403 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 98 flow [2024-11-17 03:42:44,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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) [2024-11-17 03:42:44,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:44,404 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:44,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:42:44,607 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 [2024-11-17 03:42:44,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:44,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1133239908, now seen corresponding path program 1 times [2024-11-17 03:42:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:44,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933185420] [2024-11-17 03:42:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:44,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:44,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:44,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933185420] [2024-11-17 03:42:44,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933185420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:44,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:44,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:42:44,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624180172] [2024-11-17 03:42:44,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:44,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:42:44,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:44,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:42:44,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:42:44,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-17 03:42:44,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-17 03:42:44,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:44,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-17 03:42:44,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:44,760 INFO L124 PetriNetUnfolderBase]: 75/174 cut-off events. [2024-11-17 03:42:44,761 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 03:42:44,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 174 events. 75/174 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 665 event pairs, 53 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 303. Up to 130 conditions per place. [2024-11-17 03:42:44,763 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 20 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-11-17 03:42:44,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 136 flow [2024-11-17 03:42:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:42:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:42:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-17 03:42:44,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-11-17 03:42:44,765 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 98 flow. Second operand 4 states and 79 transitions. [2024-11-17 03:42:44,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 136 flow [2024-11-17 03:42:44,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:44,767 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 90 flow [2024-11-17 03:42:44,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-17 03:42:44,768 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-11-17 03:42:44,769 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 90 flow [2024-11-17 03:42:44,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-17 03:42:44,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:44,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:44,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:42:44,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:44,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1133239907, now seen corresponding path program 1 times [2024-11-17 03:42:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:44,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710727733] [2024-11-17 03:42:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:44,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:45,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:45,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710727733] [2024-11-17 03:42:45,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710727733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:45,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470259793] [2024-11-17 03:42:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:45,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:45,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:45,012 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) [2024-11-17 03:42:45,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:42:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:45,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:42:45,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:45,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:45,259 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 [2024-11-17 03:42:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470259793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:45,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:45,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-17 03:42:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91080769] [2024-11-17 03:42:45,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:45,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:42:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:42:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:42:45,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:42:45,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 90 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2024-11-17 03:42:45,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:45,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:42:45,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:45,646 INFO L124 PetriNetUnfolderBase]: 148/326 cut-off events. [2024-11-17 03:42:45,646 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-17 03:42:45,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 326 events. 148/326 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1509 event pairs, 53 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 587. Up to 141 conditions per place. [2024-11-17 03:42:45,651 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 33 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-17 03:42:45,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 195 flow [2024-11-17 03:42:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:42:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:42:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-17 03:42:45,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5720930232558139 [2024-11-17 03:42:45,653 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 90 flow. Second operand 5 states and 123 transitions. [2024-11-17 03:42:45,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 195 flow [2024-11-17 03:42:45,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:45,655 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 103 flow [2024-11-17 03:42:45,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-11-17 03:42:45,655 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-11-17 03:42:45,656 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 103 flow [2024-11-17 03:42:45,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2024-11-17 03:42:45,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:45,656 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:45,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:42:45,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:45,861 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:45,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash 924309333, now seen corresponding path program 1 times [2024-11-17 03:42:45,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:45,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126153874] [2024-11-17 03:42:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:46,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:46,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126153874] [2024-11-17 03:42:46,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126153874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:46,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854447858] [2024-11-17 03:42:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:46,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:46,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:46,026 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) [2024-11-17 03:42:46,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:42:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:46,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:42:46,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:46,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:46,289 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 [2024-11-17 03:42:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854447858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:46,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:46,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 03:42:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744169447] [2024-11-17 03:42:46,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:46,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:42:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:42:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:42:46,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:46,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 103 flow. Second operand has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 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) [2024-11-17 03:42:46,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:46,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:46,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:46,551 INFO L124 PetriNetUnfolderBase]: 246/520 cut-off events. [2024-11-17 03:42:46,552 INFO L125 PetriNetUnfolderBase]: For 57/67 co-relation queries the response was YES. [2024-11-17 03:42:46,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 520 events. 246/520 cut-off events. For 57/67 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2615 event pairs, 81 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 1027. Up to 255 conditions per place. [2024-11-17 03:42:46,556 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-17 03:42:46,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 208 flow [2024-11-17 03:42:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:42:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:42:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-17 03:42:46,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395348837209303 [2024-11-17 03:42:46,558 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 103 flow. Second operand 5 states and 116 transitions. [2024-11-17 03:42:46,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 208 flow [2024-11-17 03:42:46,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 201 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:42:46,560 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 113 flow [2024-11-17 03:42:46,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-17 03:42:46,561 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-17 03:42:46,561 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 113 flow [2024-11-17 03:42:46,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 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) [2024-11-17 03:42:46,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:46,562 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:46,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:42:46,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:46,767 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:46,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1906728556, now seen corresponding path program 1 times [2024-11-17 03:42:46,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:46,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822802283] [2024-11-17 03:42:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:46,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:46,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:46,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822802283] [2024-11-17 03:42:46,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822802283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:46,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831490262] [2024-11-17 03:42:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:46,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:46,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:46,964 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) [2024-11-17 03:42:46,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:42:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:47,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:42:47,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:47,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:47,297 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 [2024-11-17 03:42:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831490262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:47,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:47,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-11-17 03:42:47,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024866604] [2024-11-17 03:42:47,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:47,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 03:42:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 03:42:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-17 03:42:48,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:48,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 113 flow. Second operand has 19 states, 19 states have (on average 17.736842105263158) internal successors, (337), 19 states have internal predecessors, (337), 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) [2024-11-17 03:42:48,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:48,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:48,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:48,641 INFO L124 PetriNetUnfolderBase]: 399/878 cut-off events. [2024-11-17 03:42:48,642 INFO L125 PetriNetUnfolderBase]: For 81/90 co-relation queries the response was YES. [2024-11-17 03:42:48,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1821 conditions, 878 events. 399/878 cut-off events. For 81/90 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5168 event pairs, 149 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 905. Up to 262 conditions per place. [2024-11-17 03:42:48,650 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 71 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-11-17 03:42:48,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 96 transitions, 462 flow [2024-11-17 03:42:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 03:42:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 03:42:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 291 transitions. [2024-11-17 03:42:48,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5205724508050089 [2024-11-17 03:42:48,654 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 113 flow. Second operand 13 states and 291 transitions. [2024-11-17 03:42:48,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 96 transitions, 462 flow [2024-11-17 03:42:48,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 451 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:42:48,657 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 192 flow [2024-11-17 03:42:48,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=192, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2024-11-17 03:42:48,658 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-17 03:42:48,658 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 192 flow [2024-11-17 03:42:48,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.736842105263158) internal successors, (337), 19 states have internal predecessors, (337), 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) [2024-11-17 03:42:48,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:48,661 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:48,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:42:48,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:48,862 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:48,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1411181333, now seen corresponding path program 1 times [2024-11-17 03:42:48,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:48,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257062700] [2024-11-17 03:42:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:48,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:49,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257062700] [2024-11-17 03:42:49,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257062700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433156668] [2024-11-17 03:42:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:49,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:49,056 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) [2024-11-17 03:42:49,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:42:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:49,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:42:49,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:49,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:49,314 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 [2024-11-17 03:42:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433156668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:49,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:49,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-17 03:42:49,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470577320] [2024-11-17 03:42:49,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:49,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 03:42:49,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 03:42:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-17 03:42:49,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-17 03:42:49,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 192 flow. Second operand has 17 states, 17 states have (on average 17.11764705882353) internal successors, (291), 17 states have internal predecessors, (291), 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) [2024-11-17 03:42:49,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:49,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-17 03:42:49,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:50,295 INFO L124 PetriNetUnfolderBase]: 422/883 cut-off events. [2024-11-17 03:42:50,295 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-11-17 03:42:50,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 883 events. 422/883 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5011 event pairs, 162 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 1079. Up to 315 conditions per place. [2024-11-17 03:42:50,301 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 58 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-11-17 03:42:50,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 454 flow [2024-11-17 03:42:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:42:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:42:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-11-17 03:42:50,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-11-17 03:42:50,303 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 192 flow. Second operand 11 states and 223 transitions. [2024-11-17 03:42:50,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 454 flow [2024-11-17 03:42:50,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 427 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 03:42:50,307 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 205 flow [2024-11-17 03:42:50,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=205, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2024-11-17 03:42:50,308 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-11-17 03:42:50,308 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 205 flow [2024-11-17 03:42:50,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.11764705882353) internal successors, (291), 17 states have internal predecessors, (291), 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) [2024-11-17 03:42:50,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:50,309 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:50,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 03:42:50,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:50,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:50,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2003993705, now seen corresponding path program 1 times [2024-11-17 03:42:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107091501] [2024-11-17 03:42:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107091501] [2024-11-17 03:42:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107091501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:50,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:50,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:42:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379793143] [2024-11-17 03:42:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:50,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:42:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:42:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:42:50,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-17 03:42:50,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-17 03:42:50,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:50,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-17 03:42:50,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:50,667 INFO L124 PetriNetUnfolderBase]: 422/895 cut-off events. [2024-11-17 03:42:50,668 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-11-17 03:42:50,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 895 events. 422/895 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5155 event pairs, 128 based on Foata normal form. 2/884 useless extension candidates. Maximal degree in co-relation 1113. Up to 562 conditions per place. [2024-11-17 03:42:50,674 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 46 selfloop transitions, 4 changer transitions 1/59 dead transitions. [2024-11-17 03:42:50,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 360 flow [2024-11-17 03:42:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:42:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:42:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-17 03:42:50,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-11-17 03:42:50,676 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 205 flow. Second operand 3 states and 88 transitions. [2024-11-17 03:42:50,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 360 flow [2024-11-17 03:42:50,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 342 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-17 03:42:50,683 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 223 flow [2024-11-17 03:42:50,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-11-17 03:42:50,684 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-11-17 03:42:50,684 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 223 flow [2024-11-17 03:42:50,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-17 03:42:50,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:50,684 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:50,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:42:50,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:50,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash 696573398, now seen corresponding path program 1 times [2024-11-17 03:42:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471295865] [2024-11-17 03:42:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:50,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:50,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:50,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471295865] [2024-11-17 03:42:50,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471295865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:50,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:50,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:42:50,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903302553] [2024-11-17 03:42:50,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:50,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:42:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:42:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:42:50,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:50,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:50,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:50,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:50,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:51,047 INFO L124 PetriNetUnfolderBase]: 764/1456 cut-off events. [2024-11-17 03:42:51,048 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2024-11-17 03:42:51,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 1456 events. 764/1456 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8387 event pairs, 267 based on Foata normal form. 30/1482 useless extension candidates. Maximal degree in co-relation 1898. Up to 635 conditions per place. [2024-11-17 03:42:51,055 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 68 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-11-17 03:42:51,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 542 flow [2024-11-17 03:42:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:42:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:42:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-11-17 03:42:51,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2024-11-17 03:42:51,056 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 223 flow. Second operand 5 states and 138 transitions. [2024-11-17 03:42:51,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 542 flow [2024-11-17 03:42:51,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:42:51,059 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 323 flow [2024-11-17 03:42:51,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-17 03:42:51,061 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-17 03:42:51,061 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 323 flow [2024-11-17 03:42:51,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:51,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:51,062 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:51,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:42:51,062 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:51,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1758096686, now seen corresponding path program 2 times [2024-11-17 03:42:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:51,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891664377] [2024-11-17 03:42:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:51,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:51,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891664377] [2024-11-17 03:42:51,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891664377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:51,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:51,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:42:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670751875] [2024-11-17 03:42:51,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:51,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:42:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:51,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:42:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:42:51,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:51,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:51,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:51,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:51,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:51,409 INFO L124 PetriNetUnfolderBase]: 890/1746 cut-off events. [2024-11-17 03:42:51,409 INFO L125 PetriNetUnfolderBase]: For 2181/2189 co-relation queries the response was YES. [2024-11-17 03:42:51,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5005 conditions, 1746 events. 890/1746 cut-off events. For 2181/2189 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10805 event pairs, 356 based on Foata normal form. 36/1778 useless extension candidates. Maximal degree in co-relation 2596. Up to 914 conditions per place. [2024-11-17 03:42:51,421 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 86 selfloop transitions, 14 changer transitions 3/109 dead transitions. [2024-11-17 03:42:51,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 109 transitions, 809 flow [2024-11-17 03:42:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:42:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:42:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-17 03:42:51,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6162790697674418 [2024-11-17 03:42:51,422 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 323 flow. Second operand 6 states and 159 transitions. [2024-11-17 03:42:51,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 109 transitions, 809 flow [2024-11-17 03:42:51,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 109 transitions, 781 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:51,429 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 442 flow [2024-11-17 03:42:51,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-17 03:42:51,430 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-11-17 03:42:51,430 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 442 flow [2024-11-17 03:42:51,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:51,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:51,430 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:51,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:42:51,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:51,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash 438447280, now seen corresponding path program 3 times [2024-11-17 03:42:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154802269] [2024-11-17 03:42:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154802269] [2024-11-17 03:42:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154802269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375218040] [2024-11-17 03:42:51,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:42:51,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:51,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:51,533 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) [2024-11-17 03:42:51,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:42:51,611 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:42:51,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:42:51,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:42:51,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:51,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:51,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375218040] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:51,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:42:51,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-11-17 03:42:51,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847334639] [2024-11-17 03:42:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:51,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:42:51,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:51,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:42:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:42:51,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:42:51,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 442 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 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) [2024-11-17 03:42:51,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:51,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:42:51,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:51,933 INFO L124 PetriNetUnfolderBase]: 818/1653 cut-off events. [2024-11-17 03:42:51,934 INFO L125 PetriNetUnfolderBase]: For 3053/3059 co-relation queries the response was YES. [2024-11-17 03:42:51,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5295 conditions, 1653 events. 818/1653 cut-off events. For 3053/3059 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10451 event pairs, 186 based on Foata normal form. 18/1635 useless extension candidates. Maximal degree in co-relation 4552. Up to 915 conditions per place. [2024-11-17 03:42:51,946 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 70 selfloop transitions, 17 changer transitions 2/97 dead transitions. [2024-11-17 03:42:51,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 827 flow [2024-11-17 03:42:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:42:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:42:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-17 03:42:51,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337209302325582 [2024-11-17 03:42:51,947 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 442 flow. Second operand 4 states and 109 transitions. [2024-11-17 03:42:51,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 827 flow [2024-11-17 03:42:51,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 807 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:51,957 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 548 flow [2024-11-17 03:42:51,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-11-17 03:42:51,958 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-11-17 03:42:51,958 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 548 flow [2024-11-17 03:42:51,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 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) [2024-11-17 03:42:51,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:51,958 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:51,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 03:42:52,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:52,160 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:52,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1418729526, now seen corresponding path program 4 times [2024-11-17 03:42:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:52,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969107920] [2024-11-17 03:42:52,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:52,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:52,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:52,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969107920] [2024-11-17 03:42:52,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969107920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:52,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:42:52,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039028385] [2024-11-17 03:42:52,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:52,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:42:52,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:42:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:42:52,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:52,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:52,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:52,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:52,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:52,514 INFO L124 PetriNetUnfolderBase]: 823/1609 cut-off events. [2024-11-17 03:42:52,514 INFO L125 PetriNetUnfolderBase]: For 4959/4967 co-relation queries the response was YES. [2024-11-17 03:42:52,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 1609 events. 823/1609 cut-off events. For 4959/4967 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9804 event pairs, 269 based on Foata normal form. 36/1641 useless extension candidates. Maximal degree in co-relation 5038. Up to 703 conditions per place. [2024-11-17 03:42:52,527 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 82 selfloop transitions, 23 changer transitions 9/120 dead transitions. [2024-11-17 03:42:52,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 120 transitions, 1110 flow [2024-11-17 03:42:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:42:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:42:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-11-17 03:42:52,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201550387596899 [2024-11-17 03:42:52,529 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 548 flow. Second operand 6 states and 160 transitions. [2024-11-17 03:42:52,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 120 transitions, 1110 flow [2024-11-17 03:42:52,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 1090 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-17 03:42:52,539 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 721 flow [2024-11-17 03:42:52,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=721, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2024-11-17 03:42:52,541 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-11-17 03:42:52,541 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 721 flow [2024-11-17 03:42:52,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:52,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:52,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:52,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:42:52,542 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:52,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash -48378170, now seen corresponding path program 5 times [2024-11-17 03:42:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:52,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158930559] [2024-11-17 03:42:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:52,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:52,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:52,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158930559] [2024-11-17 03:42:52,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158930559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312641654] [2024-11-17 03:42:52,663 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:42:52,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:52,665 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) [2024-11-17 03:42:52,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:42:52,735 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:42:52,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:42:52,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:42:52,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:52,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:52,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312641654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:52,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:52,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-11-17 03:42:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822345360] [2024-11-17 03:42:52,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:52,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 03:42:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 03:42:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-17 03:42:52,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:52,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 721 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:42:52,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:52,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:52,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:53,270 INFO L124 PetriNetUnfolderBase]: 929/1787 cut-off events. [2024-11-17 03:42:53,271 INFO L125 PetriNetUnfolderBase]: For 6595/6619 co-relation queries the response was YES. [2024-11-17 03:42:53,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 1787 events. 929/1787 cut-off events. For 6595/6619 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10880 event pairs, 189 based on Foata normal form. 54/1837 useless extension candidates. Maximal degree in co-relation 6650. Up to 575 conditions per place. [2024-11-17 03:42:53,286 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 92 selfloop transitions, 70 changer transitions 7/175 dead transitions. [2024-11-17 03:42:53,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 175 transitions, 1644 flow [2024-11-17 03:42:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:42:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:42:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-11-17 03:42:53,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5835095137420718 [2024-11-17 03:42:53,288 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 721 flow. Second operand 11 states and 276 transitions. [2024-11-17 03:42:53,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 175 transitions, 1644 flow [2024-11-17 03:42:53,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 175 transitions, 1610 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:53,299 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 1320 flow [2024-11-17 03:42:53,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1320, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-11-17 03:42:53,300 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-11-17 03:42:53,301 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 1320 flow [2024-11-17 03:42:53,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:42:53,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:53,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:53,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 03:42:53,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:53,502 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:53,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1449914918, now seen corresponding path program 6 times [2024-11-17 03:42:53,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:53,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014886684] [2024-11-17 03:42:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014886684] [2024-11-17 03:42:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014886684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:53,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:42:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016886896] [2024-11-17 03:42:53,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:53,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:42:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:42:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:42:53,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:53,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 1320 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:53,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:53,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:53,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:53,849 INFO L124 PetriNetUnfolderBase]: 873/1683 cut-off events. [2024-11-17 03:42:53,849 INFO L125 PetriNetUnfolderBase]: For 10158/10182 co-relation queries the response was YES. [2024-11-17 03:42:53,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7766 conditions, 1683 events. 873/1683 cut-off events. For 10158/10182 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10152 event pairs, 339 based on Foata normal form. 12/1687 useless extension candidates. Maximal degree in co-relation 6352. Up to 900 conditions per place. [2024-11-17 03:42:53,867 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 113 selfloop transitions, 24 changer transitions 5/148 dead transitions. [2024-11-17 03:42:53,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 1809 flow [2024-11-17 03:42:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:42:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:42:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-17 03:42:53,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-11-17 03:42:53,869 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 1320 flow. Second operand 5 states and 132 transitions. [2024-11-17 03:42:53,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 1809 flow [2024-11-17 03:42:53,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 148 transitions, 1721 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:53,891 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 1331 flow [2024-11-17 03:42:53,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1331, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-11-17 03:42:53,892 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-11-17 03:42:53,892 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 1331 flow [2024-11-17 03:42:53,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:42:53,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:53,892 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:53,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:42:53,892 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:53,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash -359546986, now seen corresponding path program 7 times [2024-11-17 03:42:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:53,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339117001] [2024-11-17 03:42:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:53,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:53,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339117001] [2024-11-17 03:42:53,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339117001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:42:53,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:42:53,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:42:53,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402066800] [2024-11-17 03:42:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:53,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:42:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:42:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:42:53,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:42:53,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 1331 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2024-11-17 03:42:53,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:53,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:42:53,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:54,289 INFO L124 PetriNetUnfolderBase]: 746/1500 cut-off events. [2024-11-17 03:42:54,289 INFO L125 PetriNetUnfolderBase]: For 9348/9380 co-relation queries the response was YES. [2024-11-17 03:42:54,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6900 conditions, 1500 events. 746/1500 cut-off events. For 9348/9380 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9125 event pairs, 252 based on Foata normal form. 24/1502 useless extension candidates. Maximal degree in co-relation 6303. Up to 785 conditions per place. [2024-11-17 03:42:54,301 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 118 selfloop transitions, 13 changer transitions 3/143 dead transitions. [2024-11-17 03:42:54,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 1752 flow [2024-11-17 03:42:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:42:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:42:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-17 03:42:54,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906976744186047 [2024-11-17 03:42:54,303 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 1331 flow. Second operand 5 states and 127 transitions. [2024-11-17 03:42:54,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 1752 flow [2024-11-17 03:42:54,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 143 transitions, 1688 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-17 03:42:54,320 INFO L231 Difference]: Finished difference. Result has 101 places, 120 transitions, 1333 flow [2024-11-17 03:42:54,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1333, PETRI_PLACES=101, PETRI_TRANSITIONS=120} [2024-11-17 03:42:54,321 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-11-17 03:42:54,321 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 120 transitions, 1333 flow [2024-11-17 03:42:54,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2024-11-17 03:42:54,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:54,322 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:54,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 03:42:54,322 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:54,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1596365280, now seen corresponding path program 8 times [2024-11-17 03:42:54,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:54,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169828525] [2024-11-17 03:42:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:54,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:54,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169828525] [2024-11-17 03:42:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169828525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122682567] [2024-11-17 03:42:54,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:42:54,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:54,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:54,426 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) [2024-11-17 03:42:54,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 03:42:54,495 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:42:54,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:42:54,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:42:54,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:54,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122682567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:54,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:54,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-17 03:42:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667609486] [2024-11-17 03:42:54,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:54,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 03:42:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 03:42:54,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:42:54,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:54,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 1333 flow. Second operand has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:42:54,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:54,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:54,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:54,972 INFO L124 PetriNetUnfolderBase]: 827/1574 cut-off events. [2024-11-17 03:42:54,973 INFO L125 PetriNetUnfolderBase]: For 10439/10479 co-relation queries the response was YES. [2024-11-17 03:42:54,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7547 conditions, 1574 events. 827/1574 cut-off events. For 10439/10479 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9078 event pairs, 221 based on Foata normal form. 38/1604 useless extension candidates. Maximal degree in co-relation 7040. Up to 660 conditions per place. [2024-11-17 03:42:54,986 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 115 selfloop transitions, 55 changer transitions 2/178 dead transitions. [2024-11-17 03:42:54,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 178 transitions, 2087 flow [2024-11-17 03:42:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 03:42:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 03:42:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-11-17 03:42:54,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5503875968992248 [2024-11-17 03:42:54,988 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 1333 flow. Second operand 9 states and 213 transitions. [2024-11-17 03:42:54,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 178 transitions, 2087 flow [2024-11-17 03:42:55,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 178 transitions, 2047 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-17 03:42:55,012 INFO L231 Difference]: Finished difference. Result has 110 places, 128 transitions, 1572 flow [2024-11-17 03:42:55,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1572, PETRI_PLACES=110, PETRI_TRANSITIONS=128} [2024-11-17 03:42:55,013 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-11-17 03:42:55,013 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 128 transitions, 1572 flow [2024-11-17 03:42:55,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:42:55,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:55,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:55,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 03:42:55,214 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,SelfDestructingSolverStorable16 [2024-11-17 03:42:55,214 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:55,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1459158153, now seen corresponding path program 1 times [2024-11-17 03:42:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:55,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821230209] [2024-11-17 03:42:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:55,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821230209] [2024-11-17 03:42:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821230209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110065049] [2024-11-17 03:42:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:55,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:55,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:55,364 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) [2024-11-17 03:42:55,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 03:42:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:55,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:42:55,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:55,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110065049] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:42:55,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 9 [2024-11-17 03:42:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462443265] [2024-11-17 03:42:55,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:42:55,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:42:55,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:55,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:42:55,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:42:55,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:42:55,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 1572 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-17 03:42:55,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:55,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:42:55,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:55,728 INFO L124 PetriNetUnfolderBase]: 741/1422 cut-off events. [2024-11-17 03:42:55,728 INFO L125 PetriNetUnfolderBase]: For 12028/12051 co-relation queries the response was YES. [2024-11-17 03:42:55,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1422 events. 741/1422 cut-off events. For 12028/12051 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8017 event pairs, 94 based on Foata normal form. 34/1447 useless extension candidates. Maximal degree in co-relation 7104. Up to 762 conditions per place. [2024-11-17 03:42:55,741 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 118 selfloop transitions, 46 changer transitions 3/174 dead transitions. [2024-11-17 03:42:55,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 174 transitions, 2410 flow [2024-11-17 03:42:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:42:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:42:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-17 03:42:55,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337209302325582 [2024-11-17 03:42:55,743 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 1572 flow. Second operand 4 states and 109 transitions. [2024-11-17 03:42:55,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 174 transitions, 2410 flow [2024-11-17 03:42:55,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 174 transitions, 2334 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-17 03:42:55,769 INFO L231 Difference]: Finished difference. Result has 108 places, 130 transitions, 1669 flow [2024-11-17 03:42:55,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1669, PETRI_PLACES=108, PETRI_TRANSITIONS=130} [2024-11-17 03:42:55,769 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-11-17 03:42:55,770 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 130 transitions, 1669 flow [2024-11-17 03:42:55,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-17 03:42:55,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:55,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:55,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 03:42:55,970 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,SelfDestructingSolverStorable17 [2024-11-17 03:42:55,970 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:55,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1978772600, now seen corresponding path program 1 times [2024-11-17 03:42:55,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:55,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259883057] [2024-11-17 03:42:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:55,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:42:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:56,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259883057] [2024-11-17 03:42:56,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259883057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:56,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504983589] [2024-11-17 03:42:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:56,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:56,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:56,183 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) [2024-11-17 03:42:56,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 03:42:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:56,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 03:42:56,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:56,296 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 [2024-11-17 03:42:56,413 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 [2024-11-17 03:42:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:56,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:56,789 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 33 treesize of output 29 [2024-11-17 03:42:56,804 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 03:42:56,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-17 03:42:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:56,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504983589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:56,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:56,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 21 [2024-11-17 03:42:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798159841] [2024-11-17 03:42:56,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:56,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 03:42:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 03:42:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-17 03:42:57,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-11-17 03:42:57,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 130 transitions, 1669 flow. Second operand has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 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) [2024-11-17 03:42:57,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:57,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-11-17 03:42:57,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:59,233 INFO L124 PetriNetUnfolderBase]: 1481/2790 cut-off events. [2024-11-17 03:42:59,234 INFO L125 PetriNetUnfolderBase]: For 22114/22118 co-relation queries the response was YES. [2024-11-17 03:42:59,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14536 conditions, 2790 events. 1481/2790 cut-off events. For 22114/22118 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17412 event pairs, 113 based on Foata normal form. 17/2807 useless extension candidates. Maximal degree in co-relation 14501. Up to 456 conditions per place. [2024-11-17 03:42:59,253 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 173 selfloop transitions, 96 changer transitions 204/477 dead transitions. [2024-11-17 03:42:59,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 477 transitions, 5830 flow [2024-11-17 03:42:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-17 03:42:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-17 03:42:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 974 transitions. [2024-11-17 03:42:59,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.514799154334038 [2024-11-17 03:42:59,262 INFO L175 Difference]: Start difference. First operand has 108 places, 130 transitions, 1669 flow. Second operand 44 states and 974 transitions. [2024-11-17 03:42:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 477 transitions, 5830 flow [2024-11-17 03:42:59,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 477 transitions, 5695 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:42:59,314 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 2310 flow [2024-11-17 03:42:59,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2310, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2024-11-17 03:42:59,316 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-11-17 03:42:59,316 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 2310 flow [2024-11-17 03:42:59,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 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) [2024-11-17 03:42:59,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:59,317 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:59,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 03:42:59,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:59,518 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:42:59,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 981821544, now seen corresponding path program 2 times [2024-11-17 03:42:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:59,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269067019] [2024-11-17 03:42:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:42:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269067019] [2024-11-17 03:42:59,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269067019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:59,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088390028] [2024-11-17 03:42:59,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:42:59,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:59,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:59,751 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) [2024-11-17 03:42:59,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 03:42:59,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:42:59,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:42:59,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:42:59,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:42:59,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:42:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088390028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:59,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:59,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-11-17 03:42:59,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793289640] [2024-11-17 03:42:59,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:59,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:42:59,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:59,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:42:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:42:59,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:42:59,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 2310 flow. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 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) [2024-11-17 03:42:59,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:59,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:42:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:00,590 INFO L124 PetriNetUnfolderBase]: 1157/2183 cut-off events. [2024-11-17 03:43:00,590 INFO L125 PetriNetUnfolderBase]: For 33983/33983 co-relation queries the response was YES. [2024-11-17 03:43:00,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13636 conditions, 2183 events. 1157/2183 cut-off events. For 33983/33983 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12319 event pairs, 243 based on Foata normal form. 92/2273 useless extension candidates. Maximal degree in co-relation 13587. Up to 544 conditions per place. [2024-11-17 03:43:00,615 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 214 selfloop transitions, 89 changer transitions 0/308 dead transitions. [2024-11-17 03:43:00,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 308 transitions, 4699 flow [2024-11-17 03:43:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 03:43:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 03:43:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 391 transitions. [2024-11-17 03:43:00,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5683139534883721 [2024-11-17 03:43:00,617 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 2310 flow. Second operand 16 states and 391 transitions. [2024-11-17 03:43:00,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 308 transitions, 4699 flow [2024-11-17 03:43:00,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 308 transitions, 4186 flow, removed 104 selfloop flow, removed 20 redundant places. [2024-11-17 03:43:00,684 INFO L231 Difference]: Finished difference. Result has 129 places, 182 transitions, 2686 flow [2024-11-17 03:43:00,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2686, PETRI_PLACES=129, PETRI_TRANSITIONS=182} [2024-11-17 03:43:00,685 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-11-17 03:43:00,685 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 182 transitions, 2686 flow [2024-11-17 03:43:00,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 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) [2024-11-17 03:43:00,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:00,686 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:00,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 03:43:00,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:00,887 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:43:00,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2061538487, now seen corresponding path program 3 times [2024-11-17 03:43:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830359263] [2024-11-17 03:43:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:01,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:01,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830359263] [2024-11-17 03:43:01,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830359263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:01,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396542247] [2024-11-17 03:43:01,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:43:01,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:01,638 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) [2024-11-17 03:43:01,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 03:43:01,730 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 03:43:01,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:01,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 03:43:01,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:01,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:43:01,987 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2024-11-17 03:43:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:01,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:02,106 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-11-17 03:43:02,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-11-17 03:43:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396542247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:02,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:02,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5] total 20 [2024-11-17 03:43:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329084260] [2024-11-17 03:43:02,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:02,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 03:43:02,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 03:43:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-17 03:43:02,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:43:02,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 182 transitions, 2686 flow. Second operand has 21 states, 21 states have (on average 20.19047619047619) internal successors, (424), 21 states have internal predecessors, (424), 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) [2024-11-17 03:43:02,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:02,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:43:02,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:03,112 INFO L124 PetriNetUnfolderBase]: 1354/2692 cut-off events. [2024-11-17 03:43:03,112 INFO L125 PetriNetUnfolderBase]: For 33223/33289 co-relation queries the response was YES. [2024-11-17 03:43:03,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16183 conditions, 2692 events. 1354/2692 cut-off events. For 33223/33289 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16702 event pairs, 179 based on Foata normal form. 10/2647 useless extension candidates. Maximal degree in co-relation 16139. Up to 1037 conditions per place. [2024-11-17 03:43:03,136 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 213 selfloop transitions, 118 changer transitions 1/340 dead transitions. [2024-11-17 03:43:03,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 340 transitions, 5229 flow [2024-11-17 03:43:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 03:43:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 03:43:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 408 transitions. [2024-11-17 03:43:03,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-17 03:43:03,138 INFO L175 Difference]: Start difference. First operand has 129 places, 182 transitions, 2686 flow. Second operand 17 states and 408 transitions. [2024-11-17 03:43:03,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 340 transitions, 5229 flow [2024-11-17 03:43:03,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 340 transitions, 5091 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-11-17 03:43:03,212 INFO L231 Difference]: Finished difference. Result has 147 places, 244 transitions, 3922 flow [2024-11-17 03:43:03,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3922, PETRI_PLACES=147, PETRI_TRANSITIONS=244} [2024-11-17 03:43:03,213 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-11-17 03:43:03,213 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 244 transitions, 3922 flow [2024-11-17 03:43:03,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 20.19047619047619) internal successors, (424), 21 states have internal predecessors, (424), 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) [2024-11-17 03:43:03,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:03,214 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:03,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 03:43:03,415 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,SelfDestructingSolverStorable20 [2024-11-17 03:43:03,415 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:43:03,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash 801942077, now seen corresponding path program 4 times [2024-11-17 03:43:03,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:03,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096360325] [2024-11-17 03:43:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:03,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:04,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:04,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096360325] [2024-11-17 03:43:04,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096360325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:04,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149766407] [2024-11-17 03:43:04,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:43:04,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:04,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:04,116 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) [2024-11-17 03:43:04,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 03:43:04,195 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:43:04,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:04,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 03:43:04,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:04,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:43:04,454 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2024-11-17 03:43:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:04,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:04,599 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-11-17 03:43:04,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-11-17 03:43:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149766407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:04,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:04,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 22 [2024-11-17 03:43:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091895382] [2024-11-17 03:43:04,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:04,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 03:43:04,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:04,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 03:43:04,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-17 03:43:05,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:43:05,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 244 transitions, 3922 flow. Second operand has 23 states, 23 states have (on average 19.82608695652174) internal successors, (456), 23 states have internal predecessors, (456), 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) [2024-11-17 03:43:05,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:05,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:43:05,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:06,055 INFO L124 PetriNetUnfolderBase]: 1757/3492 cut-off events. [2024-11-17 03:43:06,056 INFO L125 PetriNetUnfolderBase]: For 45561/45671 co-relation queries the response was YES. [2024-11-17 03:43:06,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21495 conditions, 3492 events. 1757/3492 cut-off events. For 45561/45671 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22846 event pairs, 273 based on Foata normal form. 12/3407 useless extension candidates. Maximal degree in co-relation 21444. Up to 1568 conditions per place. [2024-11-17 03:43:06,163 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 264 selfloop transitions, 124 changer transitions 1/397 dead transitions. [2024-11-17 03:43:06,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 397 transitions, 6452 flow [2024-11-17 03:43:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 03:43:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 03:43:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 496 transitions. [2024-11-17 03:43:06,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5492801771871539 [2024-11-17 03:43:06,166 INFO L175 Difference]: Start difference. First operand has 147 places, 244 transitions, 3922 flow. Second operand 21 states and 496 transitions. [2024-11-17 03:43:06,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 397 transitions, 6452 flow [2024-11-17 03:43:06,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 397 transitions, 6401 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:06,266 INFO L231 Difference]: Finished difference. Result has 167 places, 290 transitions, 4903 flow [2024-11-17 03:43:06,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4903, PETRI_PLACES=167, PETRI_TRANSITIONS=290} [2024-11-17 03:43:06,267 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-11-17 03:43:06,267 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 290 transitions, 4903 flow [2024-11-17 03:43:06,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 19.82608695652174) internal successors, (456), 23 states have internal predecessors, (456), 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) [2024-11-17 03:43:06,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:06,268 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:06,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 03:43:06,468 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,SelfDestructingSolverStorable21 [2024-11-17 03:43:06,468 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:43:06,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:06,469 INFO L85 PathProgramCache]: Analyzing trace with hash -428670071, now seen corresponding path program 5 times [2024-11-17 03:43:06,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:06,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110346638] [2024-11-17 03:43:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:06,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:07,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:07,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110346638] [2024-11-17 03:43:07,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110346638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:07,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086452173] [2024-11-17 03:43:07,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:43:07,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:07,590 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) [2024-11-17 03:43:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 03:43:07,671 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-17 03:43:07,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:07,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 03:43:07,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:07,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:43:07,974 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2024-11-17 03:43:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:07,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:08,125 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-11-17 03:43:08,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-11-17 03:43:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086452173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:08,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 7] total 25 [2024-11-17 03:43:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000550075] [2024-11-17 03:43:08,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:08,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-17 03:43:08,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-17 03:43:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-17 03:43:08,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:43:08,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 290 transitions, 4903 flow. Second operand has 26 states, 26 states have (on average 19.5) internal successors, (507), 26 states have internal predecessors, (507), 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) [2024-11-17 03:43:08,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:08,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:43:08,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:10,322 INFO L124 PetriNetUnfolderBase]: 2341/4666 cut-off events. [2024-11-17 03:43:10,322 INFO L125 PetriNetUnfolderBase]: For 62715/62884 co-relation queries the response was YES. [2024-11-17 03:43:10,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29248 conditions, 4666 events. 2341/4666 cut-off events. For 62715/62884 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32367 event pairs, 433 based on Foata normal form. 18/4529 useless extension candidates. Maximal degree in co-relation 29193. Up to 2738 conditions per place. [2024-11-17 03:43:10,359 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 337 selfloop transitions, 92 changer transitions 1/438 dead transitions. [2024-11-17 03:43:10,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 438 transitions, 7691 flow [2024-11-17 03:43:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 03:43:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-17 03:43:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 423 transitions. [2024-11-17 03:43:10,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5465116279069767 [2024-11-17 03:43:10,361 INFO L175 Difference]: Start difference. First operand has 167 places, 290 transitions, 4903 flow. Second operand 18 states and 423 transitions. [2024-11-17 03:43:10,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 438 transitions, 7691 flow [2024-11-17 03:43:10,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 438 transitions, 7548 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-17 03:43:10,498 INFO L231 Difference]: Finished difference. Result has 178 places, 343 transitions, 5946 flow [2024-11-17 03:43:10,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4794, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5946, PETRI_PLACES=178, PETRI_TRANSITIONS=343} [2024-11-17 03:43:10,499 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-11-17 03:43:10,499 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 343 transitions, 5946 flow [2024-11-17 03:43:10,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 19.5) internal successors, (507), 26 states have internal predecessors, (507), 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) [2024-11-17 03:43:10,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:10,500 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:10,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 03:43:10,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:10,701 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:43:10,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -407038057, now seen corresponding path program 6 times [2024-11-17 03:43:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792593484] [2024-11-17 03:43:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:11,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:11,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792593484] [2024-11-17 03:43:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792593484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:11,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661972398] [2024-11-17 03:43:11,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 03:43:11,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:11,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:11,321 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) [2024-11-17 03:43:11,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 03:43:11,419 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-17 03:43:11,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:11,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 03:43:11,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:11,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:43:11,626 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2024-11-17 03:43:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:11,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:11,758 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-11-17 03:43:11,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-11-17 03:43:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 03:43:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661972398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:11,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:11,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 5] total 19 [2024-11-17 03:43:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958711617] [2024-11-17 03:43:11,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:11,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 03:43:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 03:43:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-11-17 03:43:12,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-17 03:43:12,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 343 transitions, 5946 flow. Second operand has 20 states, 20 states have (on average 20.15) internal successors, (403), 20 states have internal predecessors, (403), 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) [2024-11-17 03:43:12,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:12,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-17 03:43:12,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:13,608 INFO L124 PetriNetUnfolderBase]: 2370/4710 cut-off events. [2024-11-17 03:43:13,608 INFO L125 PetriNetUnfolderBase]: For 66111/66277 co-relation queries the response was YES. [2024-11-17 03:43:13,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30165 conditions, 4710 events. 2370/4710 cut-off events. For 66111/66277 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 32762 event pairs, 406 based on Foata normal form. 18/4573 useless extension candidates. Maximal degree in co-relation 30107. Up to 2250 conditions per place. [2024-11-17 03:43:13,643 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 286 selfloop transitions, 150 changer transitions 2/446 dead transitions. [2024-11-17 03:43:13,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 446 transitions, 7906 flow [2024-11-17 03:43:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-17 03:43:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-17 03:43:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 469 transitions. [2024-11-17 03:43:13,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5453488372093023 [2024-11-17 03:43:13,645 INFO L175 Difference]: Start difference. First operand has 178 places, 343 transitions, 5946 flow. Second operand 20 states and 469 transitions. [2024-11-17 03:43:13,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 446 transitions, 7906 flow [2024-11-17 03:43:13,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 446 transitions, 7719 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-11-17 03:43:13,768 INFO L231 Difference]: Finished difference. Result has 188 places, 352 transitions, 6280 flow [2024-11-17 03:43:13,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5759, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6280, PETRI_PLACES=188, PETRI_TRANSITIONS=352} [2024-11-17 03:43:13,769 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-11-17 03:43:13,769 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 352 transitions, 6280 flow [2024-11-17 03:43:13,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.15) internal successors, (403), 20 states have internal predecessors, (403), 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) [2024-11-17 03:43:13,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:13,770 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:13,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-17 03:43:13,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:13,970 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:43:13,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:13,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1172066215, now seen corresponding path program 7 times [2024-11-17 03:43:13,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:13,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262655303] [2024-11-17 03:43:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:13,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:14,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:14,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262655303] [2024-11-17 03:43:14,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262655303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:14,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655940673] [2024-11-17 03:43:14,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-17 03:43:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:14,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:14,253 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) [2024-11-17 03:43:14,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 03:43:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:14,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:43:14,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:14,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:14,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655940673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:14,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:14,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-17 03:43:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004663027] [2024-11-17 03:43:14,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:14,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 03:43:14,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 03:43:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-17 03:43:14,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:43:14,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 352 transitions, 6280 flow. Second operand has 19 states, 19 states have (on average 18.57894736842105) internal successors, (353), 19 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) [2024-11-17 03:43:14,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:14,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:43:14,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:19,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:43:20,098 INFO L124 PetriNetUnfolderBase]: 3545/6597 cut-off events. [2024-11-17 03:43:20,098 INFO L125 PetriNetUnfolderBase]: For 97920/97928 co-relation queries the response was YES. [2024-11-17 03:43:20,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42923 conditions, 6597 events. 3545/6597 cut-off events. For 97920/97928 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 45482 event pairs, 576 based on Foata normal form. 28/6622 useless extension candidates. Maximal degree in co-relation 42864. Up to 1935 conditions per place. [2024-11-17 03:43:20,171 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 405 selfloop transitions, 351 changer transitions 28/790 dead transitions. [2024-11-17 03:43:20,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 790 transitions, 14088 flow [2024-11-17 03:43:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-17 03:43:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-17 03:43:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 822 transitions. [2024-11-17 03:43:20,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-11-17 03:43:20,175 INFO L175 Difference]: Start difference. First operand has 188 places, 352 transitions, 6280 flow. Second operand 36 states and 822 transitions. [2024-11-17 03:43:20,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 790 transitions, 14088 flow [2024-11-17 03:43:20,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 790 transitions, 13532 flow, removed 30 selfloop flow, removed 15 redundant places. [2024-11-17 03:43:20,446 INFO L231 Difference]: Finished difference. Result has 224 places, 594 transitions, 11586 flow [2024-11-17 03:43:20,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5936, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=11586, PETRI_PLACES=224, PETRI_TRANSITIONS=594} [2024-11-17 03:43:20,447 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-11-17 03:43:20,447 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 594 transitions, 11586 flow [2024-11-17 03:43:20,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.57894736842105) internal successors, (353), 19 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) [2024-11-17 03:43:20,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:20,448 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:20,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 03:43:20,648 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,SelfDestructingSolverStorable24 [2024-11-17 03:43:20,648 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-17 03:43:20,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash -670980937, now seen corresponding path program 8 times [2024-11-17 03:43:20,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:20,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825909266] [2024-11-17 03:43:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:20,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:20,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825909266] [2024-11-17 03:43:20,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825909266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:20,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635387483] [2024-11-17 03:43:20,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:43:20,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:20,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:20,870 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) [2024-11-17 03:43:20,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 03:43:20,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:43:20,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:20,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:43:20,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:21,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:43:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635387483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:21,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:21,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-17 03:43:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857225638] [2024-11-17 03:43:21,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:21,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 03:43:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 03:43:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-17 03:43:21,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-17 03:43:21,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 594 transitions, 11586 flow. Second operand has 20 states, 20 states have (on average 18.35) internal successors, (367), 20 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) [2024-11-17 03:43:21,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:21,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-17 03:43:21,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:25,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-17 03:43:31,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-17 03:43:40,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-17 03:43:44,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-17 03:43:52,504 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 29 DAG size of output: 28 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)