./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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 ../../../trunk/examples/svcomp/weaver/popl20-more-mts.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.graphml --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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 03:11:14,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 03:11:14,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 03:11:14,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 03:11:14,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 03:11:14,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 03:11:14,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 03:11:14,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 03:11:14,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 03:11:14,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 03:11:14,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 03:11:14,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 03:11:14,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 03:11:14,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 03:11:14,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 03:11:14,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 03:11:14,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 03:11:14,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 03:11:14,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 03:11:14,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 03:11:14,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 03:11:14,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 03:11:14,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 03:11:14,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 03:11:14,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 03:11:14,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 03:11:14,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 03:11:14,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 03:11:14,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 03:11:14,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 03:11:14,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 03:11:14,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 03:11:14,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 03:11:14,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 03:11:14,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 03:11:14,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 03:11:14,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 03:11:14,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 03:11:14,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 03:11:14,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 03:11:14,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 03:11:14,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 03:11:14,727 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 03:11:14,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 03:11:14,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 03:11:14,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 03:11:14,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 03:11:14,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 03:11:14,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 03:11:14,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 03:11:14,730 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 03:11:14,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 03:11:14,730 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 03:11:14,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 03:11:14,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 03:11:14,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 03:11:14,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 03:11:14,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 03:11:14,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 03:11:14,732 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 03:11:14,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 03:11:14,732 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 03:11:14,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 03:11:14,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 03:11:14,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 03:11:14,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 03:11:14,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:11:14,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 03:11:14,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 03:11:14,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 03:11:14,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 03:11:14,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 03:11:14,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 03:11:14,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 03:11:14,735 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 03:11:14,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 03:11:14,736 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 03:11:14,736 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 03:11:15,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 03:11:15,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 03:11:15,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 03:11:15,072 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 03:11:15,072 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 03:11:15,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-31 03:11:16,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 03:11:16,407 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 03:11:16,408 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-31 03:11:16,413 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428303665/796efb2f38ee4ee7adee5b02e45179d9/FLAGe13559607 [2023-08-31 03:11:16,425 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428303665/796efb2f38ee4ee7adee5b02e45179d9 [2023-08-31 03:11:16,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 03:11:16,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 03:11:16,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 03:11:16,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 03:11:16,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 03:11:16,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f219993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16, skipping insertion in model container [2023-08-31 03:11:16,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 03:11:16,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 03:11:16,604 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-08-31 03:11:16,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:11:16,632 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 03:11:16,667 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-08-31 03:11:16,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:11:16,693 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:11:16,695 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:11:16,701 INFO L208 MainTranslator]: Completed translation [2023-08-31 03:11:16,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16 WrapperNode [2023-08-31 03:11:16,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 03:11:16,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 03:11:16,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 03:11:16,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 03:11:16,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,769 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 228 [2023-08-31 03:11:16,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 03:11:16,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 03:11:16,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 03:11:16,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 03:11:16,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 03:11:16,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 03:11:16,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 03:11:16,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 03:11:16,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (1/1) ... [2023-08-31 03:11:16,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:11:16,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:11:16,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 03:11:16,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 03:11:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 03:11:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 03:11:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 03:11:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 03:11:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 03:11:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 03:11:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 03:11:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 03:11:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 03:11:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 03:11:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 03:11:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 03:11:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 03:11:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 03:11:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 03:11:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 03:11:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 03:11:16,956 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 03:11:17,118 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 03:11:17,120 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 03:11:17,452 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 03:11:17,611 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 03:11:17,612 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-31 03:11:17,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:11:17 BoogieIcfgContainer [2023-08-31 03:11:17,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 03:11:17,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 03:11:17,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 03:11:17,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 03:11:17,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 03:11:16" (1/3) ... [2023-08-31 03:11:17,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0cef65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:11:17, skipping insertion in model container [2023-08-31 03:11:17,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:11:16" (2/3) ... [2023-08-31 03:11:17,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0cef65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:11:17, skipping insertion in model container [2023-08-31 03:11:17,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:11:17" (3/3) ... [2023-08-31 03:11:17,624 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-08-31 03:11:17,631 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 03:11:17,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 03:11:17,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 03:11:17,639 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 03:11:17,737 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 03:11:17,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 206 transitions, 436 flow [2023-08-31 03:11:17,886 INFO L130 PetriNetUnfolder]: 18/203 cut-off events. [2023-08-31 03:11:17,887 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:11:17,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 18/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 295 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-31 03:11:17,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 206 transitions, 436 flow [2023-08-31 03:11:17,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 193 transitions, 404 flow [2023-08-31 03:11:17,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 03:11:17,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 193 transitions, 404 flow [2023-08-31 03:11:17,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 193 transitions, 404 flow [2023-08-31 03:11:17,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 193 transitions, 404 flow [2023-08-31 03:11:17,990 INFO L130 PetriNetUnfolder]: 18/193 cut-off events. [2023-08-31 03:11:17,991 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:11:17,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 18/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-31 03:11:17,998 INFO L119 LiptonReduction]: Number of co-enabled transitions 7140 [2023-08-31 03:11:23,414 INFO L134 LiptonReduction]: Checked pairs total: 7215 [2023-08-31 03:11:23,414 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-31 03:11:23,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 03:11:23,431 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@115b8b9e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 03:11:23,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 03:11:23,437 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-08-31 03:11:23,437 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:11:23,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:11:23,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:11:23,439 INFO L420 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)] === [2023-08-31 03:11:23,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:11:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1770190697, now seen corresponding path program 1 times [2023-08-31 03:11:23,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:11:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121041510] [2023-08-31 03:11:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:11:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:24,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:11:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121041510] [2023-08-31 03:11:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121041510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:11:24,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:11:24,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 03:11:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872928405] [2023-08-31 03:11:24,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:11:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 03:11:24,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:11:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 03:11:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 03:11:24,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 415 [2023-08-31 03:11:24,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2023-08-31 03:11:24,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:11:24,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 415 [2023-08-31 03:11:24,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:11:24,283 INFO L130 PetriNetUnfolder]: 420/591 cut-off events. [2023-08-31 03:11:24,283 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-31 03:11:24,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 591 events. 420/591 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1989 event pairs, 213 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 992. Up to 575 conditions per place. [2023-08-31 03:11:24,291 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 22 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-31 03:11:24,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 120 flow [2023-08-31 03:11:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 03:11:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 03:11:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-31 03:11:24,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45140562248995986 [2023-08-31 03:11:24,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-31 03:11:24,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-31 03:11:24,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:11:24,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-31 03:11:24,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2023-08-31 03:11:24,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 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) [2023-08-31 03:11:24,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 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) [2023-08-31 03:11:24,324 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 562 transitions. [2023-08-31 03:11:24,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 120 flow [2023-08-31 03:11:24,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 03:11:24,329 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 70 flow [2023-08-31 03:11:24,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-08-31 03:11:24,334 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-08-31 03:11:24,334 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 70 flow [2023-08-31 03:11:24,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2023-08-31 03:11:24,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:11:24,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:11:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 03:11:24,336 INFO L420 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)] === [2023-08-31 03:11:24,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:11:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2132029984, now seen corresponding path program 1 times [2023-08-31 03:11:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:11:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000716627] [2023-08-31 03:11:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:11:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:24,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:11:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000716627] [2023-08-31 03:11:24,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000716627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:11:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52923216] [2023-08-31 03:11:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:24,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:11:24,477 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) [2023-08-31 03:11:24,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 03:11:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:24,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:11:24,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:11:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:24,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:11:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52923216] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:11:24,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:11:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-31 03:11:24,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258606089] [2023-08-31 03:11:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:11:24,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:11:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:11:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:11:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-31 03:11:24,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 415 [2023-08-31 03:11:24,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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) [2023-08-31 03:11:24,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:11:24,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 415 [2023-08-31 03:11:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:11:24,948 INFO L130 PetriNetUnfolder]: 499/704 cut-off events. [2023-08-31 03:11:24,948 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 03:11:24,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 704 events. 499/704 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2415 event pairs, 124 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1421. Up to 410 conditions per place. [2023-08-31 03:11:24,953 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 31 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-31 03:11:24,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 166 flow [2023-08-31 03:11:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:11:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:11:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2023-08-31 03:11:24,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43710843373493974 [2023-08-31 03:11:24,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2023-08-31 03:11:24,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2023-08-31 03:11:24,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:11:24,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2023-08-31 03:11:24,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 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) [2023-08-31 03:11:24,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-08-31 03:11:24,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-08-31 03:11:24,967 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 70 flow. Second operand 5 states and 907 transitions. [2023-08-31 03:11:24,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 166 flow [2023-08-31 03:11:24,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 03:11:24,970 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 89 flow [2023-08-31 03:11:24,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-31 03:11:24,971 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-31 03:11:24,971 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 89 flow [2023-08-31 03:11:24,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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) [2023-08-31 03:11:24,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:11:24,972 INFO L208 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] [2023-08-31 03:11:24,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 03:11:25,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:25,179 INFO L420 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)] === [2023-08-31 03:11:25,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:11:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash -96618323, now seen corresponding path program 1 times [2023-08-31 03:11:25,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:11:25,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961848639] [2023-08-31 03:11:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:25,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:11:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:25,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:11:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961848639] [2023-08-31 03:11:25,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961848639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:11:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402734624] [2023-08-31 03:11:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:11:25,391 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) [2023-08-31 03:11:25,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 03:11:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:25,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:11:25,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:11:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:25,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:11:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402734624] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:11:25,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:11:25,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-08-31 03:11:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412112989] [2023-08-31 03:11:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:11:25,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 03:11:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:11:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 03:11:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-31 03:11:25,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 415 [2023-08-31 03:11:25,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 171.14285714285714) internal successors, (1198), 7 states have internal predecessors, (1198), 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) [2023-08-31 03:11:25,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:11:25,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 415 [2023-08-31 03:11:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:11:26,026 INFO L130 PetriNetUnfolder]: 698/1018 cut-off events. [2023-08-31 03:11:26,027 INFO L131 PetriNetUnfolder]: For 503/625 co-relation queries the response was YES. [2023-08-31 03:11:26,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1018 events. 698/1018 cut-off events. For 503/625 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3841 event pairs, 183 based on Foata normal form. 122/979 useless extension candidates. Maximal degree in co-relation 2430. Up to 430 conditions per place. [2023-08-31 03:11:26,031 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 58 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2023-08-31 03:11:26,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 363 flow [2023-08-31 03:11:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 03:11:26,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 03:11:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1413 transitions. [2023-08-31 03:11:26,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256024096385542 [2023-08-31 03:11:26,036 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1413 transitions. [2023-08-31 03:11:26,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1413 transitions. [2023-08-31 03:11:26,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:11:26,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1413 transitions. [2023-08-31 03:11:26,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 176.625) internal successors, (1413), 8 states have internal predecessors, (1413), 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) [2023-08-31 03:11:26,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 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) [2023-08-31 03:11:26,047 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 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) [2023-08-31 03:11:26,047 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 89 flow. Second operand 8 states and 1413 transitions. [2023-08-31 03:11:26,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 363 flow [2023-08-31 03:11:26,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 72 transitions, 351 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 03:11:26,049 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 151 flow [2023-08-31 03:11:26,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-31 03:11:26,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-08-31 03:11:26,051 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 151 flow [2023-08-31 03:11:26,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.14285714285714) internal successors, (1198), 7 states have internal predecessors, (1198), 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) [2023-08-31 03:11:26,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:11:26,052 INFO L208 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] [2023-08-31 03:11:26,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 03:11:26,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-31 03:11:26,263 INFO L420 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)] === [2023-08-31 03:11:26,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:11:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash -764145909, now seen corresponding path program 1 times [2023-08-31 03:11:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:11:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143144221] [2023-08-31 03:11:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:11:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:28,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:11:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143144221] [2023-08-31 03:11:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143144221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:11:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938105735] [2023-08-31 03:11:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:28,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:28,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:11:28,236 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) [2023-08-31 03:11:28,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 03:11:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:28,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-31 03:11:28,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:11:28,445 INFO L350 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 11 treesize of output 7 [2023-08-31 03:11:28,540 INFO L350 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 6 treesize of output 5 [2023-08-31 03:11:28,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:11:28,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 03:11:29,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:11:29,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2023-08-31 03:11:29,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:29,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2023-08-31 03:11:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:29,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:11:30,756 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~sum~0 c_~mts2~0))) (and (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (or (= c_~mts1~0 .cse0) (<= c_~N~0 ~M~0) (< .cse0 0) (< (+ ~M~0 1) c_~N~0)))) (< c_~mts3~0 .cse1)) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~mts1~0 (+ c_~sum~0 .cse2 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ c_~mts3~0 .cse2) 0) (< (+ ~M~0 1) c_~N~0)))) (<= .cse1 c_~mts3~0)) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse3 (+ c_~sum~0 .cse4 c_~mts2~0))) (or (= c_~mts1~0 .cse3) (<= 0 (+ c_~mts3~0 .cse4)) (<= c_~N~0 ~M~0) (<= .cse3 0) (< (+ ~M~0 1) c_~N~0))))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= 0 (+ c_~mts3~0 .cse5)) (< 0 (+ c_~sum~0 .cse5 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (= c_~mts1~0 0)))) is different from false [2023-08-31 03:11:41,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:41,073 INFO L350 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 97 [2023-08-31 03:11:41,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:41,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2942 treesize of output 2806 [2023-08-31 03:11:41,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:41,173 INFO L350 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 200 treesize of output 190 [2023-08-31 03:11:41,205 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:41,206 INFO L350 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 167 treesize of output 147 [2023-08-31 03:11:41,228 INFO L350 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 161 treesize of output 113 [2023-08-31 03:11:42,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:42,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 82 [2023-08-31 03:11:42,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,030 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,040 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 99 [2023-08-31 03:11:42,063 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,064 INFO L350 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 54 treesize of output 42 [2023-08-31 03:11:42,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:42,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 60 [2023-08-31 03:11:42,094 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,095 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,104 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 74 [2023-08-31 03:11:42,118 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,122 INFO L350 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 39 treesize of output 33 [2023-08-31 03:11:42,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:42,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-08-31 03:11:42,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,172 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 101 [2023-08-31 03:11:42,210 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,212 INFO L350 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 55 treesize of output 43 [2023-08-31 03:11:42,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:42,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2023-08-31 03:11:42,252 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,253 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,263 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 149 [2023-08-31 03:11:42,283 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,283 INFO L350 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 58 treesize of output 44 [2023-08-31 03:11:42,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:42,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 93 [2023-08-31 03:11:42,342 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,343 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,353 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 145 [2023-08-31 03:11:42,372 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,373 INFO L350 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 57 treesize of output 43 [2023-08-31 03:11:42,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:42,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-08-31 03:11:42,427 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,428 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:11:42,439 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 176 [2023-08-31 03:11:42,486 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:42,487 INFO L350 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 74 treesize of output 54 [2023-08-31 03:11:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:42,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938105735] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:11:42,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:11:42,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-08-31 03:11:42,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560499571] [2023-08-31 03:11:42,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:11:42,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-31 03:11:42,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:11:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-31 03:11:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=863, Unknown=4, NotChecked=62, Total=1122 [2023-08-31 03:11:43,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 415 [2023-08-31 03:11:43,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 151 flow. Second operand has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 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) [2023-08-31 03:11:43,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:11:43,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 415 [2023-08-31 03:11:43,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:11:45,392 INFO L130 PetriNetUnfolder]: 1406/2083 cut-off events. [2023-08-31 03:11:45,393 INFO L131 PetriNetUnfolder]: For 1980/2058 co-relation queries the response was YES. [2023-08-31 03:11:45,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 2083 events. 1406/2083 cut-off events. For 1980/2058 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9413 event pairs, 171 based on Foata normal form. 79/2066 useless extension candidates. Maximal degree in co-relation 5714. Up to 1166 conditions per place. [2023-08-31 03:11:45,407 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 112 selfloop transitions, 40 changer transitions 3/157 dead transitions. [2023-08-31 03:11:45,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 157 transitions, 943 flow [2023-08-31 03:11:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 03:11:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 03:11:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1666 transitions. [2023-08-31 03:11:45,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3088044485634847 [2023-08-31 03:11:45,414 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1666 transitions. [2023-08-31 03:11:45,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1666 transitions. [2023-08-31 03:11:45,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:11:45,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1666 transitions. [2023-08-31 03:11:45,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.15384615384616) internal successors, (1666), 13 states have internal predecessors, (1666), 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) [2023-08-31 03:11:45,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 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) [2023-08-31 03:11:45,427 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 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) [2023-08-31 03:11:45,427 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 151 flow. Second operand 13 states and 1666 transitions. [2023-08-31 03:11:45,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 157 transitions, 943 flow [2023-08-31 03:11:45,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 157 transitions, 916 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-31 03:11:45,436 INFO L231 Difference]: Finished difference. Result has 57 places, 71 transitions, 446 flow [2023-08-31 03:11:45,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=446, PETRI_PLACES=57, PETRI_TRANSITIONS=71} [2023-08-31 03:11:45,437 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-08-31 03:11:45,438 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 71 transitions, 446 flow [2023-08-31 03:11:45,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 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) [2023-08-31 03:11:45,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:11:45,440 INFO L208 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] [2023-08-31 03:11:45,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 03:11:45,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:45,646 INFO L420 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)] === [2023-08-31 03:11:45,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:11:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1577393381, now seen corresponding path program 2 times [2023-08-31 03:11:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:11:45,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028462090] [2023-08-31 03:11:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:45,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:11:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:11:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028462090] [2023-08-31 03:11:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028462090] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:11:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092353549] [2023-08-31 03:11:46,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:11:46,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:46,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:11:46,725 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) [2023-08-31 03:11:46,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 03:11:46,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:11:46,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:11:46,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-31 03:11:46,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:11:47,397 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:47,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-08-31 03:11:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:47,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:11:48,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:48,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 65 [2023-08-31 03:11:48,690 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:11:48,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 52 [2023-08-31 03:11:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092353549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:11:49,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:11:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 32 [2023-08-31 03:11:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447883106] [2023-08-31 03:11:49,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:11:49,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-31 03:11:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:11:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-31 03:11:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2023-08-31 03:11:52,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 415 [2023-08-31 03:11:52,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 71 transitions, 446 flow. Second operand has 34 states, 34 states have (on average 150.11764705882354) internal successors, (5104), 34 states have internal predecessors, (5104), 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) [2023-08-31 03:11:52,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:11:52,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 415 [2023-08-31 03:11:52,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:11:53,789 INFO L130 PetriNetUnfolder]: 1672/2503 cut-off events. [2023-08-31 03:11:53,790 INFO L131 PetriNetUnfolder]: For 4153/4153 co-relation queries the response was YES. [2023-08-31 03:11:53,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 2503 events. 1672/2503 cut-off events. For 4153/4153 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10816 event pairs, 295 based on Foata normal form. 1/2504 useless extension candidates. Maximal degree in co-relation 8516. Up to 1996 conditions per place. [2023-08-31 03:11:53,802 INFO L137 encePairwiseOnDemand]: 402/415 looper letters, 103 selfloop transitions, 71 changer transitions 6/180 dead transitions. [2023-08-31 03:11:53,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 180 transitions, 1342 flow [2023-08-31 03:11:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 03:11:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 03:11:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2481 transitions. [2023-08-31 03:11:53,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37364457831325304 [2023-08-31 03:11:53,810 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2481 transitions. [2023-08-31 03:11:53,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2481 transitions. [2023-08-31 03:11:53,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:11:53,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2481 transitions. [2023-08-31 03:11:53,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 155.0625) internal successors, (2481), 16 states have internal predecessors, (2481), 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) [2023-08-31 03:11:53,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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) [2023-08-31 03:11:53,828 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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) [2023-08-31 03:11:53,828 INFO L175 Difference]: Start difference. First operand has 57 places, 71 transitions, 446 flow. Second operand 16 states and 2481 transitions. [2023-08-31 03:11:53,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 180 transitions, 1342 flow [2023-08-31 03:11:53,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 1315 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-31 03:11:53,839 INFO L231 Difference]: Finished difference. Result has 79 places, 120 transitions, 987 flow [2023-08-31 03:11:53,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=987, PETRI_PLACES=79, PETRI_TRANSITIONS=120} [2023-08-31 03:11:53,840 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2023-08-31 03:11:53,841 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 120 transitions, 987 flow [2023-08-31 03:11:53,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 150.11764705882354) internal successors, (5104), 34 states have internal predecessors, (5104), 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) [2023-08-31 03:11:53,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:11:53,843 INFO L208 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] [2023-08-31 03:11:53,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 03:11:54,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:54,049 INFO L420 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)] === [2023-08-31 03:11:54,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:11:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash 717847813, now seen corresponding path program 3 times [2023-08-31 03:11:54,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:11:54,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695787952] [2023-08-31 03:11:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:11:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:11:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:11:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:11:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695787952] [2023-08-31 03:11:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695787952] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:11:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301403466] [2023-08-31 03:11:55,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:11:55,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:11:55,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:11:55,505 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) [2023-08-31 03:11:55,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 03:11:55,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:11:55,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:11:55,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-31 03:11:55,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:11:55,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:11:55,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 03:11:56,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:56,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-08-31 03:11:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:11:56,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:11:59,544 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:59,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 132 [2023-08-31 03:11:59,550 INFO L350 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 96 treesize of output 90 [2023-08-31 03:11:59,554 INFO L350 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 90 treesize of output 78 [2023-08-31 03:11:59,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:59,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 724 treesize of output 708 [2023-08-31 03:11:59,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:59,886 INFO L350 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 529 treesize of output 520 [2023-08-31 03:11:59,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:59,926 INFO L350 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 511 treesize of output 502 [2023-08-31 03:11:59,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:11:59,968 INFO L350 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 493 treesize of output 484 [2023-08-31 03:12:00,008 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:00,009 INFO L350 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 475 treesize of output 460 [2023-08-31 03:12:00,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:00,050 INFO L350 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 451 treesize of output 442 [2023-08-31 03:12:00,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:00,103 INFO L350 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 433 treesize of output 412 [2023-08-31 03:12:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:12:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301403466] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:12:13,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:12:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2023-08-31 03:12:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717643182] [2023-08-31 03:12:13,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:12:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-31 03:12:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:12:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-31 03:12:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1242, Unknown=3, NotChecked=0, Total=1482 [2023-08-31 03:12:14,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 415 [2023-08-31 03:12:14,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 120 transitions, 987 flow. Second operand has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 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) [2023-08-31 03:12:14,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:12:14,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 415 [2023-08-31 03:12:14,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:12:22,504 INFO L130 PetriNetUnfolder]: 2511/3780 cut-off events. [2023-08-31 03:12:22,504 INFO L131 PetriNetUnfolder]: For 11506/11506 co-relation queries the response was YES. [2023-08-31 03:12:22,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16403 conditions, 3780 events. 2511/3780 cut-off events. For 11506/11506 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18189 event pairs, 321 based on Foata normal form. 2/3782 useless extension candidates. Maximal degree in co-relation 16116. Up to 2512 conditions per place. [2023-08-31 03:12:22,536 INFO L137 encePairwiseOnDemand]: 399/415 looper letters, 218 selfloop transitions, 233 changer transitions 9/460 dead transitions. [2023-08-31 03:12:22,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 460 transitions, 4074 flow [2023-08-31 03:12:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-31 03:12:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-31 03:12:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4641 transitions. [2023-08-31 03:12:22,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28674698795180725 [2023-08-31 03:12:22,549 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4641 transitions. [2023-08-31 03:12:22,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4641 transitions. [2023-08-31 03:12:22,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:12:22,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4641 transitions. [2023-08-31 03:12:22,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 119.0) internal successors, (4641), 39 states have internal predecessors, (4641), 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) [2023-08-31 03:12:22,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 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) [2023-08-31 03:12:22,588 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 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) [2023-08-31 03:12:22,588 INFO L175 Difference]: Start difference. First operand has 79 places, 120 transitions, 987 flow. Second operand 39 states and 4641 transitions. [2023-08-31 03:12:22,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 460 transitions, 4074 flow [2023-08-31 03:12:22,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 460 transitions, 4045 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-31 03:12:22,660 INFO L231 Difference]: Finished difference. Result has 138 places, 309 transitions, 3369 flow [2023-08-31 03:12:22,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3369, PETRI_PLACES=138, PETRI_TRANSITIONS=309} [2023-08-31 03:12:22,662 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2023-08-31 03:12:22,662 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 309 transitions, 3369 flow [2023-08-31 03:12:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 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) [2023-08-31 03:12:22,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:12:22,664 INFO L208 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] [2023-08-31 03:12:22,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 03:12:22,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:12:22,870 INFO L420 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)] === [2023-08-31 03:12:22,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:12:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1798671641, now seen corresponding path program 4 times [2023-08-31 03:12:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:12:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100887600] [2023-08-31 03:12:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:12:22,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:12:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:12:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:12:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:12:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100887600] [2023-08-31 03:12:24,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100887600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:12:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833139641] [2023-08-31 03:12:24,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:12:24,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:12:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:12:24,139 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) [2023-08-31 03:12:24,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 03:12:24,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:12:24,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:12:24,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-31 03:12:24,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:12:24,864 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-31 03:12:24,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-08-31 03:12:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:12:25,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:12:25,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:25,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 72 [2023-08-31 03:12:25,830 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:12:25,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 98 [2023-08-31 03:12:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:12:26,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833139641] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:12:26,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:12:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 34 [2023-08-31 03:12:26,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402821064] [2023-08-31 03:12:26,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:12:26,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-31 03:12:26,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:12:26,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-31 03:12:26,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2023-08-31 03:12:28,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 415 [2023-08-31 03:12:28,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 309 transitions, 3369 flow. Second operand has 36 states, 36 states have (on average 143.0) internal successors, (5148), 36 states have internal predecessors, (5148), 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) [2023-08-31 03:12:28,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:12:28,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 415 [2023-08-31 03:12:28,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:12:30,569 INFO L130 PetriNetUnfolder]: 2783/4198 cut-off events. [2023-08-31 03:12:30,570 INFO L131 PetriNetUnfolder]: For 26469/26469 co-relation queries the response was YES. [2023-08-31 03:12:30,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23647 conditions, 4198 events. 2783/4198 cut-off events. For 26469/26469 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20583 event pairs, 395 based on Foata normal form. 2/4200 useless extension candidates. Maximal degree in co-relation 23292. Up to 3056 conditions per place. [2023-08-31 03:12:30,613 INFO L137 encePairwiseOnDemand]: 400/415 looper letters, 178 selfloop transitions, 284 changer transitions 6/468 dead transitions. [2023-08-31 03:12:30,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 468 transitions, 5900 flow [2023-08-31 03:12:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 03:12:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 03:12:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2370 transitions. [2023-08-31 03:12:30,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569277108433735 [2023-08-31 03:12:30,619 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2370 transitions. [2023-08-31 03:12:30,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2370 transitions. [2023-08-31 03:12:30,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:12:30,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2370 transitions. [2023-08-31 03:12:30,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.125) internal successors, (2370), 16 states have internal predecessors, (2370), 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) [2023-08-31 03:12:30,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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) [2023-08-31 03:12:30,682 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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) [2023-08-31 03:12:30,682 INFO L175 Difference]: Start difference. First operand has 138 places, 309 transitions, 3369 flow. Second operand 16 states and 2370 transitions. [2023-08-31 03:12:30,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 468 transitions, 5900 flow [2023-08-31 03:12:30,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 468 transitions, 5366 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-08-31 03:12:30,824 INFO L231 Difference]: Finished difference. Result has 151 places, 410 transitions, 5062 flow [2023-08-31 03:12:30,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5062, PETRI_PLACES=151, PETRI_TRANSITIONS=410} [2023-08-31 03:12:30,826 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2023-08-31 03:12:30,827 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 410 transitions, 5062 flow [2023-08-31 03:12:30,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 143.0) internal successors, (5148), 36 states have internal predecessors, (5148), 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) [2023-08-31 03:12:30,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:12:30,828 INFO L208 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] [2023-08-31 03:12:30,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 03:12:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:12:31,035 INFO L420 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)] === [2023-08-31 03:12:31,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:12:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1817816611, now seen corresponding path program 5 times [2023-08-31 03:12:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:12:31,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923782087] [2023-08-31 03:12:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:12:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:12:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:12:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:12:32,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:12:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923782087] [2023-08-31 03:12:32,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923782087] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:12:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026829841] [2023-08-31 03:12:32,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:12:32,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:12:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:12:32,289 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) [2023-08-31 03:12:32,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 03:12:32,420 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 03:12:32,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:12:32,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-31 03:12:32,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:12:32,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:12:32,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 03:12:33,123 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-31 03:12:33,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-08-31 03:12:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:12:33,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:12:35,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:35,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 750 treesize of output 767 [2023-08-31 03:12:35,827 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:35,828 INFO L350 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 542 treesize of output 533 [2023-08-31 03:12:35,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:35,868 INFO L350 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 524 treesize of output 515 [2023-08-31 03:12:35,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:35,912 INFO L350 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 506 treesize of output 491 [2023-08-31 03:12:35,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:12:35,969 INFO L350 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 482 treesize of output 473 [2023-08-31 03:12:36,012 INFO L350 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 464 treesize of output 458 [2023-08-31 03:12:36,068 INFO L350 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 458 treesize of output 446 [2023-08-31 03:12:36,110 INFO L350 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 446 treesize of output 434 [2023-08-31 03:13:07,104 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:13:42,082 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:14:05,660 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:14:19,566 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 03:14:57,899 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:15:21,489 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:18:03,703 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:21:44,138 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:23:29,394 WARN L222 SmtUtils]: Spent 13.36s on a formula simplification. DAG size of input: 1984 DAG size of output: 2011 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15