./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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 ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:54:00,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:54:00,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:54:00,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:54:00,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:54:00,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:54:00,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:54:00,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:54:00,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:54:00,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:54:00,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:54:00,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:54:00,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:54:00,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:54:00,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:54:00,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:54:00,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:54:00,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:54:00,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:54:00,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:54:00,675 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:54:00,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:54:00,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:54:00,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:54:00,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:54:00,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:54:00,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:54:00,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:54:00,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:54:00,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:54:00,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:54:00,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:54:00,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:54:00,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:54:00,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:54:00,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:54:00,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:54:00,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:54:00,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:54:00,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:54:00,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:54:00,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:54:00,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:54:00,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:54:00,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:54:00,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:54:00,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:54:00,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:54:00,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:54:00,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:54:00,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:54:00,706 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:54:00,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:54:00,706 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:54:00,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:54:00,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:54:00,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:54:00,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:54:00,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:54:00,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:54:00,708 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:54:00,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:54:00,708 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:54:00,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:54:00,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:54:00,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:54:00,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:54:00,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:54:00,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:54:00,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:54:00,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:54:00,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:54:00,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:54:00,711 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:54:00,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:54:00,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:54:00,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2022-07-22 21:54:00,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:54:00,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:54:00,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:54:00,917 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:54:00,918 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:54:00,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-07-22 21:54:00,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ddb086f/eb18f5819650420ca6c82002b5fca5a6/FLAG68179437c [2022-07-22 21:54:01,288 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:54:01,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-07-22 21:54:01,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ddb086f/eb18f5819650420ca6c82002b5fca5a6/FLAG68179437c [2022-07-22 21:54:01,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ddb086f/eb18f5819650420ca6c82002b5fca5a6 [2022-07-22 21:54:01,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:54:01,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:54:01,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:54:01,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:54:01,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:54:01,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:01,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b885084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01, skipping insertion in model container [2022-07-22 21:54:01,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:01,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:54:01,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:54:01,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-07-22 21:54:01,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:54:01,968 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:54:01,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-07-22 21:54:01,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:54:01,998 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:54:01,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01 WrapperNode [2022-07-22 21:54:01,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:54:02,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:54:02,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:54:02,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:54:02,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,025 INFO L137 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-07-22 21:54:02,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:54:02,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:54:02,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:54:02,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:54:02,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:54:02,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:54:02,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:54:02,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:54:02,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (1/1) ... [2022-07-22 21:54:02,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:54:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:02,073 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) [2022-07-22 21:54:02,075 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 [2022-07-22 21:54:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:54:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:54:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:54:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:54:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:54:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:54:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:54:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:54:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:54:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:54:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:54:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:54:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:54:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:54:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:54:02,107 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:54:02,168 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:54:02,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:54:02,332 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:54:02,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:54:02,338 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 21:54:02,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:54:02 BoogieIcfgContainer [2022-07-22 21:54:02,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:54:02,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:54:02,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:54:02,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:54:02,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:54:01" (1/3) ... [2022-07-22 21:54:02,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b68c8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:54:02, skipping insertion in model container [2022-07-22 21:54:02,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:54:01" (2/3) ... [2022-07-22 21:54:02,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b68c8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:54:02, skipping insertion in model container [2022-07-22 21:54:02,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:54:02" (3/3) ... [2022-07-22 21:54:02,352 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-07-22 21:54:02,362 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:54:02,368 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:54:02,368 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:54:02,368 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:54:02,452 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:54:02,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 160 transitions, 344 flow [2022-07-22 21:54:02,526 INFO L129 PetriNetUnfolder]: 12/157 cut-off events. [2022-07-22 21:54:02,526 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:54:02,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 12/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-07-22 21:54:02,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 160 transitions, 344 flow [2022-07-22 21:54:02,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 146 transitions, 310 flow [2022-07-22 21:54:02,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:54:02,560 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c1dfb94, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d8c79cc [2022-07-22 21:54:02,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:54:02,614 INFO L129 PetriNetUnfolder]: 12/145 cut-off events. [2022-07-22 21:54:02,614 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:54:02,615 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:02,616 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:02,617 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)] === [2022-07-22 21:54:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash 562632695, now seen corresponding path program 1 times [2022-07-22 21:54:02,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:02,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825139392] [2022-07-22 21:54:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:02,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825139392] [2022-07-22 21:54:02,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825139392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:54:02,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:54:02,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:54:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625312417] [2022-07-22 21:54:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:02,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:54:02,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:54:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:54:02,798 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 160 [2022-07-22 21:54:02,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 310 flow. Second operand has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 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) [2022-07-22 21:54:02,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:02,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 160 [2022-07-22 21:54:02,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:02,834 INFO L129 PetriNetUnfolder]: 4/138 cut-off events. [2022-07-22 21:54:02,835 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-22 21:54:02,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 138 events. 4/138 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 14/144 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2022-07-22 21:54:02,837 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 6 selfloop transitions, 0 changer transitions 4/138 dead transitions. [2022-07-22 21:54:02,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 306 flow [2022-07-22 21:54:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:54:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:54:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2022-07-22 21:54:02,848 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.95 [2022-07-22 21:54:02,848 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 304 transitions. [2022-07-22 21:54:02,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 304 transitions. [2022-07-22 21:54:02,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:02,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 304 transitions. [2022-07-22 21:54:02,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 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) [2022-07-22 21:54:02,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2022-07-22 21:54:02,861 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2022-07-22 21:54:02,863 INFO L186 Difference]: Start difference. First operand has 144 places, 146 transitions, 310 flow. Second operand 2 states and 304 transitions. [2022-07-22 21:54:02,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 306 flow [2022-07-22 21:54:02,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 294 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:54:02,872 INFO L242 Difference]: Finished difference. Result has 139 places, 134 transitions, 274 flow [2022-07-22 21:54:02,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=274, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2022-07-22 21:54:02,877 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -5 predicate places. [2022-07-22 21:54:02,878 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 274 flow [2022-07-22 21:54:02,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 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) [2022-07-22 21:54:02,879 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:02,879 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:02,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:54:02,880 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)] === [2022-07-22 21:54:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 314341918, now seen corresponding path program 1 times [2022-07-22 21:54:02,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:02,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861457481] [2022-07-22 21:54:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:03,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861457481] [2022-07-22 21:54:03,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861457481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:54:03,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:54:03,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:54:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843863970] [2022-07-22 21:54:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:03,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:54:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:54:03,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:54:03,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 160 [2022-07-22 21:54:03,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 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) [2022-07-22 21:54:03,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:03,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 160 [2022-07-22 21:54:03,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:03,430 INFO L129 PetriNetUnfolder]: 53/381 cut-off events. [2022-07-22 21:54:03,431 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-22 21:54:03,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 381 events. 53/381 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1432 event pairs, 9 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 499. Up to 49 conditions per place. [2022-07-22 21:54:03,438 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 47 selfloop transitions, 9 changer transitions 4/166 dead transitions. [2022-07-22 21:54:03,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 166 transitions, 470 flow [2022-07-22 21:54:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:54:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:54:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 894 transitions. [2022-07-22 21:54:03,445 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7982142857142858 [2022-07-22 21:54:03,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 894 transitions. [2022-07-22 21:54:03,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 894 transitions. [2022-07-22 21:54:03,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:03,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 894 transitions. [2022-07-22 21:54:03,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 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) [2022-07-22 21:54:03,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 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) [2022-07-22 21:54:03,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 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) [2022-07-22 21:54:03,456 INFO L186 Difference]: Start difference. First operand has 139 places, 134 transitions, 274 flow. Second operand 7 states and 894 transitions. [2022-07-22 21:54:03,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 166 transitions, 470 flow [2022-07-22 21:54:03,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 166 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:54:03,463 INFO L242 Difference]: Finished difference. Result has 145 places, 140 transitions, 327 flow [2022-07-22 21:54:03,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=145, PETRI_TRANSITIONS=140} [2022-07-22 21:54:03,464 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 1 predicate places. [2022-07-22 21:54:03,465 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 140 transitions, 327 flow [2022-07-22 21:54:03,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 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) [2022-07-22 21:54:03,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:03,466 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:03,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:54:03,466 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)] === [2022-07-22 21:54:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1348001824, now seen corresponding path program 1 times [2022-07-22 21:54:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:03,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622467928] [2022-07-22 21:54:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622467928] [2022-07-22 21:54:03,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622467928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:54:03,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:54:03,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:54:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858817136] [2022-07-22 21:54:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:54:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:54:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:54:03,614 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-07-22 21:54:03,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 140 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 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) [2022-07-22 21:54:03,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:03,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-07-22 21:54:03,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:03,789 INFO L129 PetriNetUnfolder]: 189/805 cut-off events. [2022-07-22 21:54:03,789 INFO L130 PetriNetUnfolder]: For 69/80 co-relation queries the response was YES. [2022-07-22 21:54:03,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 805 events. 189/805 cut-off events. For 69/80 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4627 event pairs, 105 based on Foata normal form. 0/676 useless extension candidates. Maximal degree in co-relation 1279. Up to 252 conditions per place. [2022-07-22 21:54:03,795 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 41 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2022-07-22 21:54:03,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 160 transitions, 473 flow [2022-07-22 21:54:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:54:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:54:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2022-07-22 21:54:03,798 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8015625 [2022-07-22 21:54:03,798 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2022-07-22 21:54:03,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2022-07-22 21:54:03,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:03,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2022-07-22 21:54:03,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 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) [2022-07-22 21:54:03,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 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) [2022-07-22 21:54:03,804 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 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) [2022-07-22 21:54:03,804 INFO L186 Difference]: Start difference. First operand has 145 places, 140 transitions, 327 flow. Second operand 8 states and 1026 transitions. [2022-07-22 21:54:03,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 160 transitions, 473 flow [2022-07-22 21:54:03,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 160 transitions, 469 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 21:54:03,807 INFO L242 Difference]: Finished difference. Result has 151 places, 143 transitions, 359 flow [2022-07-22 21:54:03,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=359, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2022-07-22 21:54:03,808 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 7 predicate places. [2022-07-22 21:54:03,808 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 359 flow [2022-07-22 21:54:03,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 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) [2022-07-22 21:54:03,809 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:03,809 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:03,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:54:03,809 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)] === [2022-07-22 21:54:03,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash -163412244, now seen corresponding path program 1 times [2022-07-22 21:54:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:03,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567435688] [2022-07-22 21:54:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:03,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:03,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:03,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567435688] [2022-07-22 21:54:03,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567435688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:54:03,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:54:03,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:54:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043788905] [2022-07-22 21:54:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:03,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:54:03,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:03,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:54:03,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:54:03,946 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 160 [2022-07-22 21:54:03,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 359 flow. Second operand has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 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) [2022-07-22 21:54:03,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:03,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 160 [2022-07-22 21:54:03,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:04,412 INFO L129 PetriNetUnfolder]: 852/2288 cut-off events. [2022-07-22 21:54:04,412 INFO L130 PetriNetUnfolder]: For 316/338 co-relation queries the response was YES. [2022-07-22 21:54:04,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 2288 events. 852/2288 cut-off events. For 316/338 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17393 event pairs, 597 based on Foata normal form. 21/1986 useless extension candidates. Maximal degree in co-relation 3996. Up to 1077 conditions per place. [2022-07-22 21:54:04,426 INFO L132 encePairwiseOnDemand]: 146/160 looper letters, 65 selfloop transitions, 13 changer transitions 0/172 dead transitions. [2022-07-22 21:54:04,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 172 transitions, 583 flow [2022-07-22 21:54:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:54:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:54:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1379 transitions. [2022-07-22 21:54:04,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6629807692307692 [2022-07-22 21:54:04,441 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1379 transitions. [2022-07-22 21:54:04,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1379 transitions. [2022-07-22 21:54:04,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:04,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1379 transitions. [2022-07-22 21:54:04,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.07692307692308) internal successors, (1379), 13 states have internal predecessors, (1379), 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) [2022-07-22 21:54:04,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 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) [2022-07-22 21:54:04,447 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 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) [2022-07-22 21:54:04,447 INFO L186 Difference]: Start difference. First operand has 151 places, 143 transitions, 359 flow. Second operand 13 states and 1379 transitions. [2022-07-22 21:54:04,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 172 transitions, 583 flow [2022-07-22 21:54:04,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 172 transitions, 573 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:54:04,451 INFO L242 Difference]: Finished difference. Result has 164 places, 147 transitions, 402 flow [2022-07-22 21:54:04,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=164, PETRI_TRANSITIONS=147} [2022-07-22 21:54:04,451 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 20 predicate places. [2022-07-22 21:54:04,452 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 147 transitions, 402 flow [2022-07-22 21:54:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 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) [2022-07-22 21:54:04,452 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:04,452 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:54:04,453 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)] === [2022-07-22 21:54:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1418192672, now seen corresponding path program 1 times [2022-07-22 21:54:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:04,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567831579] [2022-07-22 21:54:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:04,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:04,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567831579] [2022-07-22 21:54:04,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567831579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:54:04,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:54:04,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:54:04,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077886887] [2022-07-22 21:54:04,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:54:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:04,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:54:04,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:54:04,574 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 160 [2022-07-22 21:54:04,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 147 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-22 21:54:04,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:04,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 160 [2022-07-22 21:54:04,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:04,926 INFO L129 PetriNetUnfolder]: 640/1571 cut-off events. [2022-07-22 21:54:04,926 INFO L130 PetriNetUnfolder]: For 402/420 co-relation queries the response was YES. [2022-07-22 21:54:04,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 1571 events. 640/1571 cut-off events. For 402/420 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10407 event pairs, 371 based on Foata normal form. 18/1416 useless extension candidates. Maximal degree in co-relation 3016. Up to 747 conditions per place. [2022-07-22 21:54:04,936 INFO L132 encePairwiseOnDemand]: 147/160 looper letters, 49 selfloop transitions, 7 changer transitions 21/171 dead transitions. [2022-07-22 21:54:04,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 614 flow [2022-07-22 21:54:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:54:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:54:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1288 transitions. [2022-07-22 21:54:04,939 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2022-07-22 21:54:04,940 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1288 transitions. [2022-07-22 21:54:04,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1288 transitions. [2022-07-22 21:54:04,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:04,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1288 transitions. [2022-07-22 21:54:04,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 107.33333333333333) internal successors, (1288), 12 states have internal predecessors, (1288), 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) [2022-07-22 21:54:04,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 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) [2022-07-22 21:54:04,946 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 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) [2022-07-22 21:54:04,946 INFO L186 Difference]: Start difference. First operand has 164 places, 147 transitions, 402 flow. Second operand 12 states and 1288 transitions. [2022-07-22 21:54:04,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 614 flow [2022-07-22 21:54:04,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 597 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-22 21:54:04,949 INFO L242 Difference]: Finished difference. Result has 170 places, 141 transitions, 365 flow [2022-07-22 21:54:04,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=365, PETRI_PLACES=170, PETRI_TRANSITIONS=141} [2022-07-22 21:54:04,950 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 26 predicate places. [2022-07-22 21:54:04,950 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 365 flow [2022-07-22 21:54:04,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-22 21:54:04,951 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:04,951 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:04,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:54:04,952 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)] === [2022-07-22 21:54:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash -813756629, now seen corresponding path program 1 times [2022-07-22 21:54:04,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:04,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812835414] [2022-07-22 21:54:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812835414] [2022-07-22 21:54:05,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812835414] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:05,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911683282] [2022-07-22 21:54:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:05,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:05,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:05,060 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) [2022-07-22 21:54:05,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:54:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:05,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:54:05,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:05,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:05,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911683282] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:05,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:54:05,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-22 21:54:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018012811] [2022-07-22 21:54:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:05,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:54:05,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:54:05,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:54:05,596 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-22 21:54:05,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 141 transitions, 365 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:05,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:05,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-22 21:54:05,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:06,000 INFO L129 PetriNetUnfolder]: 1398/3107 cut-off events. [2022-07-22 21:54:06,001 INFO L130 PetriNetUnfolder]: For 902/903 co-relation queries the response was YES. [2022-07-22 21:54:06,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6376 conditions, 3107 events. 1398/3107 cut-off events. For 902/903 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24298 event pairs, 433 based on Foata normal form. 9/3029 useless extension candidates. Maximal degree in co-relation 6359. Up to 619 conditions per place. [2022-07-22 21:54:06,018 INFO L132 encePairwiseOnDemand]: 149/160 looper letters, 72 selfloop transitions, 17 changer transitions 0/192 dead transitions. [2022-07-22 21:54:06,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 192 transitions, 688 flow [2022-07-22 21:54:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:54:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:54:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1343 transitions. [2022-07-22 21:54:06,021 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630681818181818 [2022-07-22 21:54:06,021 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1343 transitions. [2022-07-22 21:54:06,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1343 transitions. [2022-07-22 21:54:06,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:06,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1343 transitions. [2022-07-22 21:54:06,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.0909090909091) internal successors, (1343), 11 states have internal predecessors, (1343), 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) [2022-07-22 21:54:06,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 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) [2022-07-22 21:54:06,029 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 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) [2022-07-22 21:54:06,029 INFO L186 Difference]: Start difference. First operand has 170 places, 141 transitions, 365 flow. Second operand 11 states and 1343 transitions. [2022-07-22 21:54:06,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 192 transitions, 688 flow [2022-07-22 21:54:06,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 192 transitions, 627 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-07-22 21:54:06,039 INFO L242 Difference]: Finished difference. Result has 159 places, 153 transitions, 428 flow [2022-07-22 21:54:06,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=428, PETRI_PLACES=159, PETRI_TRANSITIONS=153} [2022-07-22 21:54:06,040 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-07-22 21:54:06,041 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 153 transitions, 428 flow [2022-07-22 21:54:06,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:06,042 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:06,042 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:06,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:54:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 21:54:06,260 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)] === [2022-07-22 21:54:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2073619073, now seen corresponding path program 2 times [2022-07-22 21:54:06,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:06,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930566604] [2022-07-22 21:54:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:06,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:06,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:06,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930566604] [2022-07-22 21:54:06,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930566604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:06,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26495106] [2022-07-22 21:54:06,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:54:06,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:06,361 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) [2022-07-22 21:54:06,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:54:06,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:54:06,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:54:06,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:54:06,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:06,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:06,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26495106] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:54:06,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:54:06,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2022-07-22 21:54:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733373843] [2022-07-22 21:54:06,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:54:06,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:54:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:54:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:54:06,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 160 [2022-07-22 21:54:06,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 153 transitions, 428 flow. Second operand has 17 states, 17 states have (on average 113.52941176470588) internal successors, (1930), 17 states have internal predecessors, (1930), 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) [2022-07-22 21:54:06,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:06,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 160 [2022-07-22 21:54:06,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:07,930 INFO L129 PetriNetUnfolder]: 3938/7969 cut-off events. [2022-07-22 21:54:07,931 INFO L130 PetriNetUnfolder]: For 3023/3034 co-relation queries the response was YES. [2022-07-22 21:54:07,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18175 conditions, 7969 events. 3938/7969 cut-off events. For 3023/3034 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 67118 event pairs, 195 based on Foata normal form. 21/7559 useless extension candidates. Maximal degree in co-relation 18162. Up to 727 conditions per place. [2022-07-22 21:54:07,977 INFO L132 encePairwiseOnDemand]: 144/160 looper letters, 219 selfloop transitions, 88 changer transitions 0/406 dead transitions. [2022-07-22 21:54:07,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 406 transitions, 1822 flow [2022-07-22 21:54:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:54:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:54:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2927 transitions. [2022-07-22 21:54:07,983 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622395833333333 [2022-07-22 21:54:07,983 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2927 transitions. [2022-07-22 21:54:07,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2927 transitions. [2022-07-22 21:54:07,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:07,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2927 transitions. [2022-07-22 21:54:07,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.95833333333333) internal successors, (2927), 24 states have internal predecessors, (2927), 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) [2022-07-22 21:54:07,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 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) [2022-07-22 21:54:07,994 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 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) [2022-07-22 21:54:07,994 INFO L186 Difference]: Start difference. First operand has 159 places, 153 transitions, 428 flow. Second operand 24 states and 2927 transitions. [2022-07-22 21:54:07,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 406 transitions, 1822 flow [2022-07-22 21:54:08,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 406 transitions, 1817 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:54:08,026 INFO L242 Difference]: Finished difference. Result has 197 places, 234 transitions, 1164 flow [2022-07-22 21:54:08,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1164, PETRI_PLACES=197, PETRI_TRANSITIONS=234} [2022-07-22 21:54:08,027 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 53 predicate places. [2022-07-22 21:54:08,027 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 234 transitions, 1164 flow [2022-07-22 21:54:08,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 113.52941176470588) internal successors, (1930), 17 states have internal predecessors, (1930), 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) [2022-07-22 21:54:08,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:08,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:08,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:54:08,245 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,SelfDestructingSolverStorable6 [2022-07-22 21:54:08,245 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)] === [2022-07-22 21:54:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:08,245 INFO L85 PathProgramCache]: Analyzing trace with hash -301515547, now seen corresponding path program 1 times [2022-07-22 21:54:08,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:08,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702586566] [2022-07-22 21:54:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:08,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:08,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702586566] [2022-07-22 21:54:08,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702586566] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:08,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972690643] [2022-07-22 21:54:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:08,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:08,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:08,313 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) [2022-07-22 21:54:08,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:54:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:08,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:54:08,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:08,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:08,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972690643] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:08,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:54:08,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-22 21:54:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800768740] [2022-07-22 21:54:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:08,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:54:08,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:54:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:54:08,652 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-07-22 21:54:08,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 234 transitions, 1164 flow. Second operand has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 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) [2022-07-22 21:54:08,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:08,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-07-22 21:54:08,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:08,917 INFO L129 PetriNetUnfolder]: 700/2281 cut-off events. [2022-07-22 21:54:08,918 INFO L130 PetriNetUnfolder]: For 7414/7907 co-relation queries the response was YES. [2022-07-22 21:54:08,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6415 conditions, 2281 events. 700/2281 cut-off events. For 7414/7907 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 18533 event pairs, 111 based on Foata normal form. 131/2311 useless extension candidates. Maximal degree in co-relation 6384. Up to 375 conditions per place. [2022-07-22 21:54:08,942 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 63 selfloop transitions, 24 changer transitions 0/251 dead transitions. [2022-07-22 21:54:08,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 251 transitions, 1465 flow [2022-07-22 21:54:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:54:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:54:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 890 transitions. [2022-07-22 21:54:08,945 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2022-07-22 21:54:08,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 890 transitions. [2022-07-22 21:54:08,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 890 transitions. [2022-07-22 21:54:08,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:08,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 890 transitions. [2022-07-22 21:54:08,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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) [2022-07-22 21:54:08,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 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) [2022-07-22 21:54:08,949 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 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) [2022-07-22 21:54:08,949 INFO L186 Difference]: Start difference. First operand has 197 places, 234 transitions, 1164 flow. Second operand 7 states and 890 transitions. [2022-07-22 21:54:08,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 251 transitions, 1465 flow [2022-07-22 21:54:08,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 251 transitions, 1419 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-07-22 21:54:08,968 INFO L242 Difference]: Finished difference. Result has 196 places, 234 transitions, 1174 flow [2022-07-22 21:54:08,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1174, PETRI_PLACES=196, PETRI_TRANSITIONS=234} [2022-07-22 21:54:08,969 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-07-22 21:54:08,969 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 234 transitions, 1174 flow [2022-07-22 21:54:08,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 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) [2022-07-22 21:54:08,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:08,970 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:08,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:54:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:09,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:54:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1056307517, now seen corresponding path program 3 times [2022-07-22 21:54:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67258220] [2022-07-22 21:54:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:09,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67258220] [2022-07-22 21:54:09,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67258220] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779055954] [2022-07-22 21:54:09,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:54:09,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:09,262 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) [2022-07-22 21:54:09,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:54:09,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 21:54:09,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:54:09,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:54:09,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:09,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:09,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779055954] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:09,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:54:09,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-07-22 21:54:09,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478669560] [2022-07-22 21:54:09,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:54:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:54:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:54:09,670 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-22 21:54:09,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 234 transitions, 1174 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:09,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:09,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-22 21:54:09,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:10,375 INFO L129 PetriNetUnfolder]: 2346/5131 cut-off events. [2022-07-22 21:54:10,378 INFO L130 PetriNetUnfolder]: For 11091/11731 co-relation queries the response was YES. [2022-07-22 21:54:10,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15921 conditions, 5131 events. 2346/5131 cut-off events. For 11091/11731 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 41304 event pairs, 374 based on Foata normal form. 140/5098 useless extension candidates. Maximal degree in co-relation 15892. Up to 1116 conditions per place. [2022-07-22 21:54:10,415 INFO L132 encePairwiseOnDemand]: 147/160 looper letters, 109 selfloop transitions, 71 changer transitions 0/300 dead transitions. [2022-07-22 21:54:10,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 300 transitions, 1857 flow [2022-07-22 21:54:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:54:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:54:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1353 transitions. [2022-07-22 21:54:10,418 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76875 [2022-07-22 21:54:10,418 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1353 transitions. [2022-07-22 21:54:10,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1353 transitions. [2022-07-22 21:54:10,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:10,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1353 transitions. [2022-07-22 21:54:10,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 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) [2022-07-22 21:54:10,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 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) [2022-07-22 21:54:10,423 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 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) [2022-07-22 21:54:10,423 INFO L186 Difference]: Start difference. First operand has 196 places, 234 transitions, 1174 flow. Second operand 11 states and 1353 transitions. [2022-07-22 21:54:10,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 300 transitions, 1857 flow [2022-07-22 21:54:10,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 300 transitions, 1825 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-22 21:54:10,457 INFO L242 Difference]: Finished difference. Result has 206 places, 251 transitions, 1556 flow [2022-07-22 21:54:10,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1556, PETRI_PLACES=206, PETRI_TRANSITIONS=251} [2022-07-22 21:54:10,458 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 62 predicate places. [2022-07-22 21:54:10,458 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 251 transitions, 1556 flow [2022-07-22 21:54:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:10,459 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:10,459 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:10,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:54:10,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:10,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:54:10,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash -924588239, now seen corresponding path program 4 times [2022-07-22 21:54:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:10,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013803368] [2022-07-22 21:54:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013803368] [2022-07-22 21:54:10,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013803368] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198242143] [2022-07-22 21:54:10,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 21:54:10,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:10,755 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) [2022-07-22 21:54:10,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:54:10,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 21:54:10,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:54:10,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:54:10,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:10,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:11,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198242143] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:11,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:54:11,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-22 21:54:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931450923] [2022-07-22 21:54:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:11,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:54:11,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:54:11,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:54:11,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-22 21:54:11,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 251 transitions, 1556 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:11,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:11,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-22 21:54:11,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:11,835 INFO L129 PetriNetUnfolder]: 2460/5508 cut-off events. [2022-07-22 21:54:11,835 INFO L130 PetriNetUnfolder]: For 18237/19039 co-relation queries the response was YES. [2022-07-22 21:54:11,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18981 conditions, 5508 events. 2460/5508 cut-off events. For 18237/19039 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 45070 event pairs, 429 based on Foata normal form. 95/5428 useless extension candidates. Maximal degree in co-relation 18947. Up to 1210 conditions per place. [2022-07-22 21:54:11,887 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 105 selfloop transitions, 109 changer transitions 0/334 dead transitions. [2022-07-22 21:54:11,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 334 transitions, 2651 flow [2022-07-22 21:54:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:54:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:54:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1335 transitions. [2022-07-22 21:54:11,891 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2022-07-22 21:54:11,891 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1335 transitions. [2022-07-22 21:54:11,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1335 transitions. [2022-07-22 21:54:11,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:11,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1335 transitions. [2022-07-22 21:54:11,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 121.36363636363636) internal successors, (1335), 11 states have internal predecessors, (1335), 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) [2022-07-22 21:54:11,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 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) [2022-07-22 21:54:11,907 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 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) [2022-07-22 21:54:11,907 INFO L186 Difference]: Start difference. First operand has 206 places, 251 transitions, 1556 flow. Second operand 11 states and 1335 transitions. [2022-07-22 21:54:11,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 334 transitions, 2651 flow [2022-07-22 21:54:11,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 334 transitions, 2579 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-22 21:54:11,958 INFO L242 Difference]: Finished difference. Result has 216 places, 291 transitions, 2389 flow [2022-07-22 21:54:11,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2389, PETRI_PLACES=216, PETRI_TRANSITIONS=291} [2022-07-22 21:54:11,960 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 72 predicate places. [2022-07-22 21:54:11,960 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 291 transitions, 2389 flow [2022-07-22 21:54:11,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:11,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:11,961 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:11,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 21:54:12,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 21:54:12,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:54:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash -297785203, now seen corresponding path program 5 times [2022-07-22 21:54:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:12,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457439303] [2022-07-22 21:54:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:12,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:12,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457439303] [2022-07-22 21:54:12,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457439303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:12,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430117567] [2022-07-22 21:54:12,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 21:54:12,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:12,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:12,246 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) [2022-07-22 21:54:12,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 21:54:12,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:54:12,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:54:12,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:54:12,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:12,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:12,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430117567] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:54:12,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:54:12,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-22 21:54:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398005910] [2022-07-22 21:54:12,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:54:12,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:54:12,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:54:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:54:12,454 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 160 [2022-07-22 21:54:12,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 291 transitions, 2389 flow. Second operand has 16 states, 16 states have (on average 113.8125) internal successors, (1821), 16 states have internal predecessors, (1821), 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) [2022-07-22 21:54:12,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:12,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 160 [2022-07-22 21:54:12,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:14,984 INFO L129 PetriNetUnfolder]: 5606/11533 cut-off events. [2022-07-22 21:54:14,984 INFO L130 PetriNetUnfolder]: For 63186/63421 co-relation queries the response was YES. [2022-07-22 21:54:15,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44215 conditions, 11533 events. 5606/11533 cut-off events. For 63186/63421 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 100245 event pairs, 737 based on Foata normal form. 45/11389 useless extension candidates. Maximal degree in co-relation 44175. Up to 1176 conditions per place. [2022-07-22 21:54:15,075 INFO L132 encePairwiseOnDemand]: 143/160 looper letters, 233 selfloop transitions, 235 changer transitions 0/567 dead transitions. [2022-07-22 21:54:15,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 567 transitions, 5333 flow [2022-07-22 21:54:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:54:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:54:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2907 transitions. [2022-07-22 21:54:15,078 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75703125 [2022-07-22 21:54:15,079 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2907 transitions. [2022-07-22 21:54:15,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2907 transitions. [2022-07-22 21:54:15,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:15,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2907 transitions. [2022-07-22 21:54:15,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.125) internal successors, (2907), 24 states have internal predecessors, (2907), 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) [2022-07-22 21:54:15,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 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) [2022-07-22 21:54:15,087 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 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) [2022-07-22 21:54:15,087 INFO L186 Difference]: Start difference. First operand has 216 places, 291 transitions, 2389 flow. Second operand 24 states and 2907 transitions. [2022-07-22 21:54:15,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 567 transitions, 5333 flow [2022-07-22 21:54:15,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 567 transitions, 5278 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-07-22 21:54:15,437 INFO L242 Difference]: Finished difference. Result has 247 places, 412 transitions, 4314 flow [2022-07-22 21:54:15,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4314, PETRI_PLACES=247, PETRI_TRANSITIONS=412} [2022-07-22 21:54:15,437 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 103 predicate places. [2022-07-22 21:54:15,438 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 412 transitions, 4314 flow [2022-07-22 21:54:15,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.8125) internal successors, (1821), 16 states have internal predecessors, (1821), 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) [2022-07-22 21:54:15,438 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:15,438 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:15,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 21:54:15,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:15,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:54:15,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:15,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1659950369, now seen corresponding path program 6 times [2022-07-22 21:54:15,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:15,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112829933] [2022-07-22 21:54:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:15,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:15,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112829933] [2022-07-22 21:54:15,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112829933] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:15,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951762245] [2022-07-22 21:54:15,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 21:54:15,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:15,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:15,763 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) [2022-07-22 21:54:15,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 21:54:15,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-07-22 21:54:15,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:54:15,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:54:15,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:16,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:54:16,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951762245] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:16,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:54:16,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2022-07-22 21:54:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805698870] [2022-07-22 21:54:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:54:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:54:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:16,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:54:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:54:16,167 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-22 21:54:16,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 412 transitions, 4314 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:16,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:16,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-22 21:54:16,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:17,222 INFO L129 PetriNetUnfolder]: 3122/6889 cut-off events. [2022-07-22 21:54:17,223 INFO L130 PetriNetUnfolder]: For 45425/46015 co-relation queries the response was YES. [2022-07-22 21:54:17,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28819 conditions, 6889 events. 3122/6889 cut-off events. For 45425/46015 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 58963 event pairs, 367 based on Foata normal form. 72/6758 useless extension candidates. Maximal degree in co-relation 28767. Up to 1942 conditions per place. [2022-07-22 21:54:17,307 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 124 selfloop transitions, 151 changer transitions 0/441 dead transitions. [2022-07-22 21:54:17,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 441 transitions, 5031 flow [2022-07-22 21:54:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:54:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:54:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1220 transitions. [2022-07-22 21:54:17,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625 [2022-07-22 21:54:17,398 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1220 transitions. [2022-07-22 21:54:17,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1220 transitions. [2022-07-22 21:54:17,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:17,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1220 transitions. [2022-07-22 21:54:17,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 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) [2022-07-22 21:54:17,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 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) [2022-07-22 21:54:17,402 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 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) [2022-07-22 21:54:17,402 INFO L186 Difference]: Start difference. First operand has 247 places, 412 transitions, 4314 flow. Second operand 10 states and 1220 transitions. [2022-07-22 21:54:17,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 441 transitions, 5031 flow [2022-07-22 21:54:17,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 441 transitions, 4896 flow, removed 42 selfloop flow, removed 6 redundant places. [2022-07-22 21:54:17,629 INFO L242 Difference]: Finished difference. Result has 253 places, 415 transitions, 4752 flow [2022-07-22 21:54:17,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4752, PETRI_PLACES=253, PETRI_TRANSITIONS=415} [2022-07-22 21:54:17,630 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 109 predicate places. [2022-07-22 21:54:17,630 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 415 transitions, 4752 flow [2022-07-22 21:54:17,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-07-22 21:54:17,630 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:54:17,630 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:54:17,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 21:54:17,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:17,848 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:54:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:54:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1385441389, now seen corresponding path program 1 times [2022-07-22 21:54:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:54:17,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027173309] [2022-07-22 21:54:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:54:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:19,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:54:19,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027173309] [2022-07-22 21:54:19,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027173309] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:54:19,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088959421] [2022-07-22 21:54:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:54:19,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:54:19,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:54:19,308 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:54:19,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 21:54:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:54:19,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 21:54:19,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:54:20,851 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:54:20,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2022-07-22 21:54:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:21,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:54:21,680 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:54:21,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 29 [2022-07-22 21:54:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:54:32,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088959421] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:54:32,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:54:32,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 23] total 75 [2022-07-22 21:54:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134536040] [2022-07-22 21:54:32,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:54:32,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-07-22 21:54:32,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:54:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-07-22 21:54:32,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=838, Invalid=4708, Unknown=4, NotChecked=0, Total=5550 [2022-07-22 21:54:32,393 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 160 [2022-07-22 21:54:32,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 415 transitions, 4752 flow. Second operand has 75 states, 75 states have (on average 55.973333333333336) internal successors, (4198), 75 states have internal predecessors, (4198), 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) [2022-07-22 21:54:32,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:54:32,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 160 [2022-07-22 21:54:32,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:54:57,124 INFO L129 PetriNetUnfolder]: 61400/98096 cut-off events. [2022-07-22 21:54:57,124 INFO L130 PetriNetUnfolder]: For 626924/626924 co-relation queries the response was YES. [2022-07-22 21:54:58,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389660 conditions, 98096 events. 61400/98096 cut-off events. For 626924/626924 co-relation queries the response was YES. Maximal size of possible extension queue 4238. Compared 897971 event pairs, 8101 based on Foata normal form. 2/97905 useless extension candidates. Maximal degree in co-relation 389606. Up to 33929 conditions per place. [2022-07-22 21:54:58,838 INFO L132 encePairwiseOnDemand]: 119/160 looper letters, 2138 selfloop transitions, 786 changer transitions 15/2985 dead transitions. [2022-07-22 21:54:58,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 2985 transitions, 40606 flow [2022-07-22 21:54:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-07-22 21:54:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2022-07-22 21:54:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 6365 transitions. [2022-07-22 21:54:58,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.40183080808080807 [2022-07-22 21:54:58,847 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 6365 transitions. [2022-07-22 21:54:58,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 6365 transitions. [2022-07-22 21:54:58,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:54:58,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 6365 transitions. [2022-07-22 21:54:58,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 64.29292929292929) internal successors, (6365), 99 states have internal predecessors, (6365), 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) [2022-07-22 21:54:58,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 160.0) internal successors, (16000), 100 states have internal predecessors, (16000), 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) [2022-07-22 21:54:58,878 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 160.0) internal successors, (16000), 100 states have internal predecessors, (16000), 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) [2022-07-22 21:54:58,878 INFO L186 Difference]: Start difference. First operand has 253 places, 415 transitions, 4752 flow. Second operand 99 states and 6365 transitions. [2022-07-22 21:54:58,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 2985 transitions, 40606 flow [2022-07-22 21:55:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 2985 transitions, 39797 flow, removed 89 selfloop flow, removed 7 redundant places. [2022-07-22 21:55:14,719 INFO L242 Difference]: Finished difference. Result has 386 places, 1237 transitions, 18944 flow [2022-07-22 21:55:14,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=18944, PETRI_PLACES=386, PETRI_TRANSITIONS=1237} [2022-07-22 21:55:14,720 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 242 predicate places. [2022-07-22 21:55:14,721 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 1237 transitions, 18944 flow [2022-07-22 21:55:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 55.973333333333336) internal successors, (4198), 75 states have internal predecessors, (4198), 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) [2022-07-22 21:55:14,722 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:55:14,722 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:55:14,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 21:55:14,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 21:55:14,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:55:14,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:55:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1574482253, now seen corresponding path program 1 times [2022-07-22 21:55:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:55:14,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010144585] [2022-07-22 21:55:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:55:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:55:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:55:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:55:15,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:55:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010144585] [2022-07-22 21:55:15,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010144585] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:55:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808764029] [2022-07-22 21:55:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:55:15,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:55:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:55:15,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:55:15,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 21:55:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:55:15,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-22 21:55:15,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:55:16,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 21:55:16,342 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 21:55:16,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 11 [2022-07-22 21:55:16,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 21:55:16,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 21:55:17,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 21:55:17,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 21 [2022-07-22 21:55:17,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-22 21:55:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:55:17,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:55:17,616 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod c_~sum1~0 4294967296))) is different from false [2022-07-22 21:55:17,646 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (= (mod (+ c_~sum1~0 |c_thread1Thread1of1ForFork0_#t~mem2|) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296))) is different from false [2022-07-22 21:55:17,653 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (= (mod (+ c_~sum1~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296))) is different from false [2022-07-22 21:55:17,667 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum1~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296) (mod (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296)))) is different from false [2022-07-22 21:55:17,688 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) 4294967296) (mod (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296)))) is different from false [2022-07-22 21:55:17,699 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod (+ c_~sum1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) 4294967296)))) is different from false [2022-07-22 21:55:17,735 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) |c_ULTIMATE.start_main_#t~ret9#1.base|) |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 4294967296) (mod (+ c_~sum1~0 (select (select .cse0 |c_ULTIMATE.start_main_#t~ret9#1.base|) |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 4294967296)))) is different from false [2022-07-22 21:55:17,745 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_#res#1.offset|)) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) |c_ULTIMATE.start_create_fresh_uint_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_#res#1.offset|)) 4294967296)))) is different from false [2022-07-22 21:55:17,752 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum3~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum2~0) 4294967296) (mod (+ c_~sum1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) 4294967296)))) is different from false [2022-07-22 21:55:17,779 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:55:17,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 59 treesize of output 48 [2022-07-22 21:55:17,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 846 treesize of output 798 [2022-07-22 21:55:17,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 798 treesize of output 766 [2022-07-22 21:55:17,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 766 treesize of output 718 [2022-07-22 21:55:17,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 718 treesize of output 694