./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:50:28,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:50:29,036 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:50:29,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:50:29,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:50:29,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:50:29,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:50:29,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:50:29,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:50:29,078 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:50:29,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:50:29,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:50:29,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:50:29,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:50:29,081 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:50:29,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:50:29,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:50:29,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:50:29,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:50:29,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:50:29,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:50:29,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:50:29,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:50:29,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:50:29,087 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:50:29,087 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:50:29,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:50:29,088 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:50:29,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:50:29,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:50:29,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:50:29,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:50:29,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:50:29,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:50:29,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:50:29,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:50:29,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:50:29,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:50:29,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:50:29,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:50:29,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:50:29,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:50:29,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-09 02:50:29,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:50:29,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:50:29,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:50:29,405 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:50:29,405 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:50:29,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-09 02:50:30,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:50:30,953 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:50:30,956 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-09 02:50:30,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b44571f/0f5828253ccc41618e69f09c96b24e25/FLAG152471f69 [2024-11-09 02:50:31,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b44571f/0f5828253ccc41618e69f09c96b24e25 [2024-11-09 02:50:31,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:50:31,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:50:31,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:50:31,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:50:31,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:50:31,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f206748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31, skipping insertion in model container [2024-11-09 02:50:31,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:50:31,560 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-09 02:50:31,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:50:31,582 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:50:31,610 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-09 02:50:31,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:50:31,634 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:50:31,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31 WrapperNode [2024-11-09 02:50:31,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:50:31,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:50:31,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:50:31,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:50:31,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,677 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 222 [2024-11-09 02:50:31,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:50:31,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:50:31,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:50:31,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:50:31,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,702 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,734 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-09 02:50:31,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:50:31,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:50:31,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:50:31,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:50:31,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (1/1) ... [2024-11-09 02:50:31,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:50:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:31,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:50:31,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:50:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:50:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:50:31,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:50:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:50:31,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:50:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:50:31,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:50:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:50:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:50:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:50:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:50:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:50:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:50:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:50:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:50:31,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:50:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:50:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:50:31,839 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:50:31,944 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:50:31,945 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:50:32,354 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:50:32,354 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:50:32,701 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:50:32,701 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:50:32,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:50:32 BoogieIcfgContainer [2024-11-09 02:50:32,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:50:32,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:50:32,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:50:32,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:50:32,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:50:31" (1/3) ... [2024-11-09 02:50:32,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba8a8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:50:32, skipping insertion in model container [2024-11-09 02:50:32,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:31" (2/3) ... [2024-11-09 02:50:32,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba8a8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:50:32, skipping insertion in model container [2024-11-09 02:50:32,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:50:32" (3/3) ... [2024-11-09 02:50:32,713 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-09 02:50:32,730 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:50:32,730 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:50:32,730 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:50:32,788 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:50:32,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 99 flow [2024-11-09 02:50:32,856 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-09 02:50:32,856 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:50:32,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 7/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-09 02:50:32,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 99 flow [2024-11-09 02:50:32,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 88 flow [2024-11-09 02:50:32,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:50:32,882 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=LoopHeads, 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;@6a888d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:50:32,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:50:32,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:50:32,900 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2024-11-09 02:50:32,901 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:50:32,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:32,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:32,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:32,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash 618773252, now seen corresponding path program 1 times [2024-11-09 02:50:32,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:32,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914674545] [2024-11-09 02:50:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:32,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914674545] [2024-11-09 02:50:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914674545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:33,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:50:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600756539] [2024-11-09 02:50:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:33,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:50:33,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:50:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:50:33,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-09 02:50:33,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:33,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:33,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-09 02:50:33,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:33,575 INFO L124 PetriNetUnfolderBase]: 378/600 cut-off events. [2024-11-09 02:50:33,575 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-09 02:50:33,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 600 events. 378/600 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2170 event pairs, 251 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 993. Up to 520 conditions per place. [2024-11-09 02:50:33,585 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 27 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-11-09 02:50:33,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 148 flow [2024-11-09 02:50:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:50:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:50:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-09 02:50:33,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-11-09 02:50:33,602 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 3 states and 60 transitions. [2024-11-09 02:50:33,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 148 flow [2024-11-09 02:50:33,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:50:33,620 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 88 flow [2024-11-09 02:50:33,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2024-11-09 02:50:33,626 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-09 02:50:33,627 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 88 flow [2024-11-09 02:50:33,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:33,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:33,627 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:33,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:50:33,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:33,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1165415527, now seen corresponding path program 1 times [2024-11-09 02:50:33,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:33,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466030603] [2024-11-09 02:50:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:33,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:50:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466030603] [2024-11-09 02:50:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466030603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:33,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:50:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917690235] [2024-11-09 02:50:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:33,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:50:33,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:50:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:50:33,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-09 02:50:33,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:33,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:33,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-09 02:50:33,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:33,951 INFO L124 PetriNetUnfolderBase]: 378/602 cut-off events. [2024-11-09 02:50:33,952 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-09 02:50:33,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 602 events. 378/602 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2153 event pairs, 251 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 1138. Up to 519 conditions per place. [2024-11-09 02:50:33,956 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 25 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-11-09 02:50:33,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 154 flow [2024-11-09 02:50:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:50:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:50:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-09 02:50:33,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-11-09 02:50:33,961 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 88 flow. Second operand 4 states and 73 transitions. [2024-11-09 02:50:33,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 154 flow [2024-11-09 02:50:33,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:33,963 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 112 flow [2024-11-09 02:50:33,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2024-11-09 02:50:33,966 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2024-11-09 02:50:33,966 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 112 flow [2024-11-09 02:50:33,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:33,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:33,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:33,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:50:33,967 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:33,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2009133342, now seen corresponding path program 1 times [2024-11-09 02:50:33,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083193639] [2024-11-09 02:50:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083193639] [2024-11-09 02:50:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083193639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:34,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:34,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:50:34,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161173571] [2024-11-09 02:50:34,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:34,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:50:34,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:50:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:50:34,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-09 02:50:34,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:34,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:34,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-09 02:50:34,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:34,289 INFO L124 PetriNetUnfolderBase]: 513/895 cut-off events. [2024-11-09 02:50:34,289 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 02:50:34,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 895 events. 513/895 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3746 event pairs, 172 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 1597. Up to 361 conditions per place. [2024-11-09 02:50:34,297 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 40 selfloop transitions, 2 changer transitions 2/51 dead transitions. [2024-11-09 02:50:34,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 229 flow [2024-11-09 02:50:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:50:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:50:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-09 02:50:34,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-11-09 02:50:34,299 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 112 flow. Second operand 3 states and 72 transitions. [2024-11-09 02:50:34,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 229 flow [2024-11-09 02:50:34,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:34,302 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 123 flow [2024-11-09 02:50:34,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-11-09 02:50:34,303 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-09 02:50:34,304 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 123 flow [2024-11-09 02:50:34,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:34,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:34,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:34,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:50:34,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:34,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2082098651, now seen corresponding path program 1 times [2024-11-09 02:50:34,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:34,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728946432] [2024-11-09 02:50:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:34,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728946432] [2024-11-09 02:50:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728946432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974661648] [2024-11-09 02:50:34,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:34,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:34,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:34,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:34,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:50:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:34,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:50:34,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:34,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974661648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:34,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 02:50:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805037063] [2024-11-09 02:50:34,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:34,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:50:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:50:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:50:34,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-09 02:50:34,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 123 flow. Second operand has 12 states, 12 states have (on average 12.0) internal successors, (144), 12 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:34,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:34,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-09 02:50:34,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:35,168 INFO L124 PetriNetUnfolderBase]: 899/1460 cut-off events. [2024-11-09 02:50:35,168 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-09 02:50:35,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 1460 events. 899/1460 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6211 event pairs, 398 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 2092. Up to 681 conditions per place. [2024-11-09 02:50:35,176 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 36 selfloop transitions, 10 changer transitions 37/89 dead transitions. [2024-11-09 02:50:35,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 430 flow [2024-11-09 02:50:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:50:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:50:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-11-09 02:50:35,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-11-09 02:50:35,179 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 123 flow. Second operand 9 states and 164 transitions. [2024-11-09 02:50:35,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 430 flow [2024-11-09 02:50:35,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:35,198 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 173 flow [2024-11-09 02:50:35,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=173, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-11-09 02:50:35,199 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-11-09 02:50:35,200 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 173 flow [2024-11-09 02:50:35,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.0) internal successors, (144), 12 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:35,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:35,201 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, 1, 1, 1] [2024-11-09 02:50:35,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:50:35,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:35,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:35,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:35,408 INFO L85 PathProgramCache]: Analyzing trace with hash 796655525, now seen corresponding path program 2 times [2024-11-09 02:50:35,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:35,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58091892] [2024-11-09 02:50:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:35,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:50:35,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:35,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58091892] [2024-11-09 02:50:35,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58091892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:35,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817780618] [2024-11-09 02:50:35,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:50:35,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:35,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:35,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:35,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:50:35,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:50:35,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:35,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:50:35,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:50:35,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:50:35,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817780618] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:35,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:35,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-09 02:50:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446444869] [2024-11-09 02:50:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:35,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:50:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:50:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:50:35,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-09 02:50:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:35,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-09 02:50:35,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:35,996 INFO L124 PetriNetUnfolderBase]: 658/1128 cut-off events. [2024-11-09 02:50:35,996 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-11-09 02:50:35,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1128 events. 658/1128 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5091 event pairs, 267 based on Foata normal form. 0/997 useless extension candidates. Maximal degree in co-relation 2279. Up to 687 conditions per place. [2024-11-09 02:50:36,004 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-09 02:50:36,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 313 flow [2024-11-09 02:50:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-11-09 02:50:36,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-11-09 02:50:36,008 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 173 flow. Second operand 6 states and 105 transitions. [2024-11-09 02:50:36,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 313 flow [2024-11-09 02:50:36,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 293 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-09 02:50:36,015 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 173 flow [2024-11-09 02:50:36,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-09 02:50:36,016 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-11-09 02:50:36,017 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 173 flow [2024-11-09 02:50:36,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:36,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:36,019 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, 1, 1, 1, 1] [2024-11-09 02:50:36,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:50:36,219 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 [2024-11-09 02:50:36,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:36,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 663959658, now seen corresponding path program 1 times [2024-11-09 02:50:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420053925] [2024-11-09 02:50:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:50:36,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:36,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420053925] [2024-11-09 02:50:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420053925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:36,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757095179] [2024-11-09 02:50:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:36,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:36,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:36,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:36,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:50:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:36,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:50:36,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:50:36,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:50:36,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757095179] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:36,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:36,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-09 02:50:36,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076770570] [2024-11-09 02:50:36,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:36,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:50:36,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:36,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:50:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:50:36,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-09 02:50:36,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:36,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:36,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-09 02:50:36,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:36,842 INFO L124 PetriNetUnfolderBase]: 968/1616 cut-off events. [2024-11-09 02:50:36,842 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-11-09 02:50:36,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3642 conditions, 1616 events. 968/1616 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7561 event pairs, 324 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 3608. Up to 692 conditions per place. [2024-11-09 02:50:36,852 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 45 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2024-11-09 02:50:36,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 321 flow [2024-11-09 02:50:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-11-09 02:50:36,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-11-09 02:50:36,853 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 173 flow. Second operand 6 states and 98 transitions. [2024-11-09 02:50:36,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 321 flow [2024-11-09 02:50:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 307 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 02:50:36,858 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 188 flow [2024-11-09 02:50:36,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-11-09 02:50:36,859 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2024-11-09 02:50:36,859 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 188 flow [2024-11-09 02:50:36,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:36,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:36,859 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:36,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:37,063 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 [2024-11-09 02:50:37,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:37,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -378467664, now seen corresponding path program 1 times [2024-11-09 02:50:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:37,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573677430] [2024-11-09 02:50:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 02:50:37,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573677430] [2024-11-09 02:50:37,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573677430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:37,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:50:37,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831084109] [2024-11-09 02:50:37,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:37,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:37,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:37,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:37,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:37,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-09 02:50:37,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:37,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:37,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-09 02:50:37,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:37,624 INFO L124 PetriNetUnfolderBase]: 1127/1737 cut-off events. [2024-11-09 02:50:37,625 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-11-09 02:50:37,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 1737 events. 1127/1737 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6823 event pairs, 192 based on Foata normal form. 46/1677 useless extension candidates. Maximal degree in co-relation 4299. Up to 1224 conditions per place. [2024-11-09 02:50:37,635 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 70 selfloop transitions, 8 changer transitions 1/84 dead transitions. [2024-11-09 02:50:37,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 472 flow [2024-11-09 02:50:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-09 02:50:37,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-11-09 02:50:37,637 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 188 flow. Second operand 6 states and 111 transitions. [2024-11-09 02:50:37,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 472 flow [2024-11-09 02:50:37,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:50:37,642 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 238 flow [2024-11-09 02:50:37,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-09 02:50:37,643 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-09 02:50:37,643 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 238 flow [2024-11-09 02:50:37,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:37,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:37,644 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:37,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:50:37,644 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:37,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:37,645 INFO L85 PathProgramCache]: Analyzing trace with hash 851671984, now seen corresponding path program 2 times [2024-11-09 02:50:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:37,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4974093] [2024-11-09 02:50:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:40,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4974093] [2024-11-09 02:50:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4974093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103535044] [2024-11-09 02:50:40,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:50:40,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:40,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:40,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:40,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:50:40,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:50:40,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:40,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 02:50:40,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:41,239 INFO L349 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2024-11-09 02:50:41,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 120 treesize of output 93 [2024-11-09 02:51:02,651 WARN L286 SmtUtils]: Spent 17.03s on a formula simplification that was a NOOP. DAG size: 1588 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 02:51:02,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:02,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 46 select indices, 46 select index equivalence classes, 1 disjoint index pairs (out of 1035 index pairs), introduced 46 new quantified variables, introduced 1035 case distinctions, treesize of input 979 treesize of output 4487