./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/parallel-parallel-sum-1.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 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:27:48,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:27:48,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:27:48,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:27:48,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:27:48,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:27:48,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:27:48,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:27:48,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:27:48,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:27:48,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:27:48,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:27:48,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:27:48,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:27:48,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:27:48,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:27:48,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:27:48,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:27:48,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:27:48,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:27:48,792 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:27:48,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:27:48,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:27:48,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:27:48,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:27:48,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:27:48,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:27:48,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:27:48,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:27:48,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:27:48,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:27:48,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:27:48,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:27:48,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:27:48,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:27:48,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:27:48,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:27:48,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:27:48,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:27:48,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:27:48,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:27:48,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:27:48,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:27:48,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:27:48,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:27:48,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:27:48,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:27:48,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:27:48,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:27:48,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:27:48,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:27:48,850 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:27:48,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:27:48,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:27:48,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:27:48,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:27:48,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:27:48,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:27:48,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:27:48,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:27:48,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:27:48,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:27:48,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:27:48,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:27:48,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:27:48,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:27:48,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:27:48,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:27:48,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:27:48,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:27:48,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:27:48,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:27:48,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:27:48,856 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:27:48,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:27:48,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:27:48,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 [2022-07-12 10:27:49,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:27:49,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:27:49,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:27:49,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:27:49,139 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:27:49,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-07-12 10:27:49,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3426b7ea/313f8e7a9d174c30b7d0561c2d303f31/FLAG62b017b3b [2022-07-12 10:27:49,678 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:27:49,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-07-12 10:27:49,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3426b7ea/313f8e7a9d174c30b7d0561c2d303f31/FLAG62b017b3b [2022-07-12 10:27:49,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3426b7ea/313f8e7a9d174c30b7d0561c2d303f31 [2022-07-12 10:27:49,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:27:49,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:27:49,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:27:49,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:27:49,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:27:49,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d4e991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49, skipping insertion in model container [2022-07-12 10:27:49,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:27:49,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:27:49,904 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-07-12 10:27:49,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:27:49,925 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:27:49,951 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-07-12 10:27:49,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:27:49,968 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:27:49,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49 WrapperNode [2022-07-12 10:27:49,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:27:49,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:27:49,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:27:49,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:27:49,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:49,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,018 INFO L137 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 297 [2022-07-12 10:27:50,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:27:50,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:27:50,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:27:50,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:27:50,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:27:50,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:27:50,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:27:50,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:27:50,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (1/1) ... [2022-07-12 10:27:50,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:27:50,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:50,096 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) [2022-07-12 10:27:50,097 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 [2022-07-12 10:27:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:27:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:27:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:27:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:27:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:27:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:27:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:27:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:27:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:27:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:27:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:27:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:27:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:27:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:27:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:27:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:27:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:27:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:27:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:27:50,132 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:27:50,268 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:27:50,272 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:27:50,739 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:27:50,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:27:50,854 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 10:27:50,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:27:50 BoogieIcfgContainer [2022-07-12 10:27:50,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:27:50,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:27:50,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:27:50,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:27:50,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:27:49" (1/3) ... [2022-07-12 10:27:50,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e979bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:27:50, skipping insertion in model container [2022-07-12 10:27:50,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:49" (2/3) ... [2022-07-12 10:27:50,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e979bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:27:50, skipping insertion in model container [2022-07-12 10:27:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:27:50" (3/3) ... [2022-07-12 10:27:50,867 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2022-07-12 10:27:50,872 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:27:50,879 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:27:50,879 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:27:50,880 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:27:50,945 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-12 10:27:50,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 204 places, 206 transitions, 444 flow [2022-07-12 10:27:51,077 INFO L129 PetriNetUnfolder]: 15/202 cut-off events. [2022-07-12 10:27:51,078 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:27:51,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 202 events. 15/202 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2022-07-12 10:27:51,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 206 transitions, 444 flow [2022-07-12 10:27:51,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 189 transitions, 402 flow [2022-07-12 10:27:51,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:27:51,103 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@d5a2eb1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70a19764 [2022-07-12 10:27:51,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:27:51,135 INFO L129 PetriNetUnfolder]: 15/188 cut-off events. [2022-07-12 10:27:51,139 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:27:51,139 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:51,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:51,141 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 2 more)] === [2022-07-12 10:27:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -276996244, now seen corresponding path program 1 times [2022-07-12 10:27:51,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:51,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631095235] [2022-07-12 10:27:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:51,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:51,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:51,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631095235] [2022-07-12 10:27:51,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631095235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:51,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:51,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:27:51,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904146847] [2022-07-12 10:27:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:27:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:27:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:27:51,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 206 [2022-07-12 10:27:51,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 189 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2022-07-12 10:27:51,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:51,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 206 [2022-07-12 10:27:51,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:51,625 INFO L129 PetriNetUnfolder]: 118/325 cut-off events. [2022-07-12 10:27:51,625 INFO L130 PetriNetUnfolder]: For 61/62 co-relation queries the response was YES. [2022-07-12 10:27:51,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 325 events. 118/325 cut-off events. For 61/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 586 event pairs, 51 based on Foata normal form. 72/379 useless extension candidates. Maximal degree in co-relation 351. Up to 163 conditions per place. [2022-07-12 10:27:51,632 INFO L132 encePairwiseOnDemand]: 196/206 looper letters, 16 selfloop transitions, 0 changer transitions 5/179 dead transitions. [2022-07-12 10:27:51,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 179 transitions, 414 flow [2022-07-12 10:27:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:27:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:27:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2022-07-12 10:27:51,651 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9320388349514563 [2022-07-12 10:27:51,652 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2022-07-12 10:27:51,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2022-07-12 10:27:51,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:51,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2022-07-12 10:27:51,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 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) [2022-07-12 10:27:51,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-07-12 10:27:51,669 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-07-12 10:27:51,671 INFO L186 Difference]: Start difference. First operand has 187 places, 189 transitions, 402 flow. Second operand 2 states and 384 transitions. [2022-07-12 10:27:51,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 179 transitions, 414 flow [2022-07-12 10:27:51,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 179 transitions, 398 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-12 10:27:51,680 INFO L242 Difference]: Finished difference. Result has 180 places, 174 transitions, 356 flow [2022-07-12 10:27:51,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=180, PETRI_TRANSITIONS=174} [2022-07-12 10:27:51,685 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, -7 predicate places. [2022-07-12 10:27:51,685 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 174 transitions, 356 flow [2022-07-12 10:27:51,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2022-07-12 10:27:51,686 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:51,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:51,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:27:51,688 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 2 more)] === [2022-07-12 10:27:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 965277343, now seen corresponding path program 1 times [2022-07-12 10:27:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:51,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142295891] [2022-07-12 10:27:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:51,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:52,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:52,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142295891] [2022-07-12 10:27:52,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142295891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:52,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:52,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:27:52,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920458326] [2022-07-12 10:27:52,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:27:52,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:27:52,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:27:52,095 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 206 [2022-07-12 10:27:52,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 174 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 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) [2022-07-12 10:27:52,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:52,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 206 [2022-07-12 10:27:52,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:52,365 INFO L129 PetriNetUnfolder]: 133/378 cut-off events. [2022-07-12 10:27:52,365 INFO L130 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-07-12 10:27:52,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 378 events. 133/378 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 821 event pairs, 8 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 615. Up to 205 conditions per place. [2022-07-12 10:27:52,372 INFO L132 encePairwiseOnDemand]: 196/206 looper letters, 50 selfloop transitions, 7 changer transitions 4/188 dead transitions. [2022-07-12 10:27:52,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 188 transitions, 513 flow [2022-07-12 10:27:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:27:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:27:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1063 transitions. [2022-07-12 10:27:52,376 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7371705963938974 [2022-07-12 10:27:52,376 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1063 transitions. [2022-07-12 10:27:52,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1063 transitions. [2022-07-12 10:27:52,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:52,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1063 transitions. [2022-07-12 10:27:52,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 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) [2022-07-12 10:27:52,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2022-07-12 10:27:52,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2022-07-12 10:27:52,386 INFO L186 Difference]: Start difference. First operand has 180 places, 174 transitions, 356 flow. Second operand 7 states and 1063 transitions. [2022-07-12 10:27:52,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 188 transitions, 513 flow [2022-07-12 10:27:52,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 188 transitions, 513 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:27:52,395 INFO L242 Difference]: Finished difference. Result has 184 places, 178 transitions, 397 flow [2022-07-12 10:27:52,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2022-07-12 10:27:52,396 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, -3 predicate places. [2022-07-12 10:27:52,397 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 397 flow [2022-07-12 10:27:52,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 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) [2022-07-12 10:27:52,398 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:52,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:27:52,399 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 2 more)] === [2022-07-12 10:27:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1117153979, now seen corresponding path program 1 times [2022-07-12 10:27:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:52,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628551069] [2022-07-12 10:27:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:52,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628551069] [2022-07-12 10:27:52,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628551069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:52,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:52,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:27:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290414864] [2022-07-12 10:27:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:52,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:27:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:27:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:27:52,566 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2022-07-12 10:27:52,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-07-12 10:27:52,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:52,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2022-07-12 10:27:52,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:52,833 INFO L129 PetriNetUnfolder]: 346/867 cut-off events. [2022-07-12 10:27:52,833 INFO L130 PetriNetUnfolder]: For 165/167 co-relation queries the response was YES. [2022-07-12 10:27:52,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 867 events. 346/867 cut-off events. For 165/167 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3634 event pairs, 49 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 1638. Up to 208 conditions per place. [2022-07-12 10:27:52,842 INFO L132 encePairwiseOnDemand]: 196/206 looper letters, 59 selfloop transitions, 16 changer transitions 4/213 dead transitions. [2022-07-12 10:27:52,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 663 flow [2022-07-12 10:27:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:27:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:27:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2022-07-12 10:27:52,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7742718446601942 [2022-07-12 10:27:52,847 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2022-07-12 10:27:52,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2022-07-12 10:27:52,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:52,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2022-07-12 10:27:52,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 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) [2022-07-12 10:27:52,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-07-12 10:27:52,855 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-07-12 10:27:52,855 INFO L186 Difference]: Start difference. First operand has 184 places, 178 transitions, 397 flow. Second operand 8 states and 1276 transitions. [2022-07-12 10:27:52,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 663 flow [2022-07-12 10:27:52,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 213 transitions, 644 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-12 10:27:52,861 INFO L242 Difference]: Finished difference. Result has 191 places, 187 transitions, 500 flow [2022-07-12 10:27:52,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2022-07-12 10:27:52,862 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 4 predicate places. [2022-07-12 10:27:52,862 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 500 flow [2022-07-12 10:27:52,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-07-12 10:27:52,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:52,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:52,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:27:52,864 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 2 more)] === [2022-07-12 10:27:52,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1719569361, now seen corresponding path program 1 times [2022-07-12 10:27:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:52,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110121983] [2022-07-12 10:27:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:53,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:53,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110121983] [2022-07-12 10:27:53,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110121983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:53,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:53,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:27:53,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287264391] [2022-07-12 10:27:53,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:53,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:27:53,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:53,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:27:53,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:27:53,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2022-07-12 10:27:53,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 500 flow. Second operand has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-07-12 10:27:53,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:53,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2022-07-12 10:27:53,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:53,386 INFO L129 PetriNetUnfolder]: 559/1328 cut-off events. [2022-07-12 10:27:53,386 INFO L130 PetriNetUnfolder]: For 933/934 co-relation queries the response was YES. [2022-07-12 10:27:53,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 1328 events. 559/1328 cut-off events. For 933/934 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6837 event pairs, 59 based on Foata normal form. 1/1262 useless extension candidates. Maximal degree in co-relation 2973. Up to 504 conditions per place. [2022-07-12 10:27:53,401 INFO L132 encePairwiseOnDemand]: 196/206 looper letters, 63 selfloop transitions, 19 changer transitions 6/222 dead transitions. [2022-07-12 10:27:53,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 222 transitions, 814 flow [2022-07-12 10:27:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:27:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:27:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2022-07-12 10:27:53,406 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7742718446601942 [2022-07-12 10:27:53,409 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2022-07-12 10:27:53,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2022-07-12 10:27:53,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:53,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2022-07-12 10:27:53,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 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) [2022-07-12 10:27:53,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-07-12 10:27:53,418 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-07-12 10:27:53,419 INFO L186 Difference]: Start difference. First operand has 191 places, 187 transitions, 500 flow. Second operand 8 states and 1276 transitions. [2022-07-12 10:27:53,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 222 transitions, 814 flow [2022-07-12 10:27:53,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 222 transitions, 810 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-12 10:27:53,433 INFO L242 Difference]: Finished difference. Result has 201 places, 196 transitions, 648 flow [2022-07-12 10:27:53,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=648, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2022-07-12 10:27:53,435 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 14 predicate places. [2022-07-12 10:27:53,435 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 648 flow [2022-07-12 10:27:53,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-07-12 10:27:53,436 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:53,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:53,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:27:53,437 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 2 more)] === [2022-07-12 10:27:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:53,438 INFO L85 PathProgramCache]: Analyzing trace with hash -94838817, now seen corresponding path program 1 times [2022-07-12 10:27:53,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:53,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388774283] [2022-07-12 10:27:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:53,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:53,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:53,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388774283] [2022-07-12 10:27:53,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388774283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:53,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:53,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:27:53,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114531944] [2022-07-12 10:27:53,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:53,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:27:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:27:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:27:53,657 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 206 [2022-07-12 10:27:53,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 648 flow. Second operand has 9 states, 9 states have (on average 139.33333333333334) internal successors, (1254), 9 states have internal predecessors, (1254), 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) [2022-07-12 10:27:53,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:53,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 206 [2022-07-12 10:27:53,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:54,181 INFO L129 PetriNetUnfolder]: 591/1475 cut-off events. [2022-07-12 10:27:54,181 INFO L130 PetriNetUnfolder]: For 2096/2097 co-relation queries the response was YES. [2022-07-12 10:27:54,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 1475 events. 591/1475 cut-off events. For 2096/2097 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7795 event pairs, 149 based on Foata normal form. 24/1415 useless extension candidates. Maximal degree in co-relation 3654. Up to 797 conditions per place. [2022-07-12 10:27:54,198 INFO L132 encePairwiseOnDemand]: 196/206 looper letters, 78 selfloop transitions, 4 changer transitions 19/219 dead transitions. [2022-07-12 10:27:54,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 219 transitions, 962 flow [2022-07-12 10:27:54,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:27:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:27:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1285 transitions. [2022-07-12 10:27:54,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6930960086299892 [2022-07-12 10:27:54,203 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1285 transitions. [2022-07-12 10:27:54,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1285 transitions. [2022-07-12 10:27:54,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:54,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1285 transitions. [2022-07-12 10:27:54,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.77777777777777) internal successors, (1285), 9 states have internal predecessors, (1285), 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) [2022-07-12 10:27:54,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2022-07-12 10:27:54,210 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2022-07-12 10:27:54,211 INFO L186 Difference]: Start difference. First operand has 201 places, 196 transitions, 648 flow. Second operand 9 states and 1285 transitions. [2022-07-12 10:27:54,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 219 transitions, 962 flow [2022-07-12 10:27:54,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 219 transitions, 954 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-12 10:27:54,219 INFO L242 Difference]: Finished difference. Result has 210 places, 197 transitions, 670 flow [2022-07-12 10:27:54,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=670, PETRI_PLACES=210, PETRI_TRANSITIONS=197} [2022-07-12 10:27:54,220 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 23 predicate places. [2022-07-12 10:27:54,220 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 197 transitions, 670 flow [2022-07-12 10:27:54,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 139.33333333333334) internal successors, (1254), 9 states have internal predecessors, (1254), 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) [2022-07-12 10:27:54,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:54,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:54,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:27:54,222 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 2 more)] === [2022-07-12 10:27:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:54,223 INFO L85 PathProgramCache]: Analyzing trace with hash -692900602, now seen corresponding path program 1 times [2022-07-12 10:27:54,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:54,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780556775] [2022-07-12 10:27:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:54,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780556775] [2022-07-12 10:27:54,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780556775] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144343791] [2022-07-12 10:27:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:54,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:54,491 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) [2022-07-12 10:27:54,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:27:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:54,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 10:27:54,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:54,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:27:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:55,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144343791] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:27:55,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:27:55,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-07-12 10:27:55,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223279486] [2022-07-12 10:27:55,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:27:55,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 10:27:55,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 10:27:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-07-12 10:27:55,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 206 [2022-07-12 10:27:55,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 197 transitions, 670 flow. Second operand has 25 states, 25 states have (on average 137.04) internal successors, (3426), 25 states have internal predecessors, (3426), 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) [2022-07-12 10:27:55,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:55,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 206 [2022-07-12 10:27:55,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:56,011 INFO L129 PetriNetUnfolder]: 559/1391 cut-off events. [2022-07-12 10:27:56,012 INFO L130 PetriNetUnfolder]: For 2059/2060 co-relation queries the response was YES. [2022-07-12 10:27:56,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 1391 events. 559/1391 cut-off events. For 2059/2060 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6989 event pairs, 146 based on Foata normal form. 16/1322 useless extension candidates. Maximal degree in co-relation 3464. Up to 783 conditions per place. [2022-07-12 10:27:56,027 INFO L132 encePairwiseOnDemand]: 186/206 looper letters, 68 selfloop transitions, 20 changer transitions 13/218 dead transitions. [2022-07-12 10:27:56,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 958 flow [2022-07-12 10:27:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:27:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:27:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2344 transitions. [2022-07-12 10:27:56,034 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6693318103940605 [2022-07-12 10:27:56,034 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2344 transitions. [2022-07-12 10:27:56,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2344 transitions. [2022-07-12 10:27:56,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:56,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2344 transitions. [2022-07-12 10:27:56,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.88235294117646) internal successors, (2344), 17 states have internal predecessors, (2344), 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) [2022-07-12 10:27:56,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 206.0) internal successors, (3708), 18 states have internal predecessors, (3708), 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) [2022-07-12 10:27:56,048 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 206.0) internal successors, (3708), 18 states have internal predecessors, (3708), 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) [2022-07-12 10:27:56,048 INFO L186 Difference]: Start difference. First operand has 210 places, 197 transitions, 670 flow. Second operand 17 states and 2344 transitions. [2022-07-12 10:27:56,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 958 flow [2022-07-12 10:27:56,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 218 transitions, 932 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-07-12 10:27:56,057 INFO L242 Difference]: Finished difference. Result has 223 places, 201 transitions, 736 flow [2022-07-12 10:27:56,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=736, PETRI_PLACES=223, PETRI_TRANSITIONS=201} [2022-07-12 10:27:56,058 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 36 predicate places. [2022-07-12 10:27:56,058 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 201 transitions, 736 flow [2022-07-12 10:27:56,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 137.04) internal successors, (3426), 25 states have internal predecessors, (3426), 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) [2022-07-12 10:27:56,060 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:56,060 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:56,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:27:56,279 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 [2022-07-12 10:27:56,280 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 2 more)] === [2022-07-12 10:27:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash -773787099, now seen corresponding path program 2 times [2022-07-12 10:27:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:56,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270673874] [2022-07-12 10:27:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:27:56,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:56,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270673874] [2022-07-12 10:27:56,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270673874] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:56,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851668999] [2022-07-12 10:27:56,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:27:56,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:56,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:56,713 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) [2022-07-12 10:27:56,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:27:56,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:27:56,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:27:56,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 75 conjunts are in the unsatisfiable core [2022-07-12 10:27:56,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:57,679 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 15 treesize of output 11 [2022-07-12 10:27:58,325 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 [2022-07-12 10:27:58,464 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 [2022-07-12 10:27:58,596 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 [2022-07-12 10:27:58,722 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 [2022-07-12 10:27:59,050 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:27:59,051 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 15 [2022-07-12 10:27:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:59,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:28:00,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851668999] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:28:00,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:28:00,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 32, 11] total 51 [2022-07-12 10:28:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885325047] [2022-07-12 10:28:00,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:28:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 10:28:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 10:28:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2313, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 10:28:00,120 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2022-07-12 10:28:00,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 201 transitions, 736 flow. Second operand has 51 states, 51 states have (on average 100.74509803921569) internal successors, (5138), 51 states have internal predecessors, (5138), 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) [2022-07-12 10:28:00,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:00,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2022-07-12 10:28:00,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:10,704 INFO L129 PetriNetUnfolder]: 5365/11132 cut-off events. [2022-07-12 10:28:10,704 INFO L130 PetriNetUnfolder]: For 15208/15211 co-relation queries the response was YES. [2022-07-12 10:28:10,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28217 conditions, 11132 events. 5365/11132 cut-off events. For 15208/15211 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 90783 event pairs, 123 based on Foata normal form. 79/10637 useless extension candidates. Maximal degree in co-relation 28193. Up to 2891 conditions per place. [2022-07-12 10:28:10,792 INFO L132 encePairwiseOnDemand]: 170/206 looper letters, 383 selfloop transitions, 328 changer transitions 71/871 dead transitions. [2022-07-12 10:28:10,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 871 transitions, 5427 flow [2022-07-12 10:28:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-07-12 10:28:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-07-12 10:28:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 8627 transitions. [2022-07-12 10:28:10,810 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5107151314231589 [2022-07-12 10:28:10,810 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 8627 transitions. [2022-07-12 10:28:10,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 8627 transitions. [2022-07-12 10:28:10,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:10,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 8627 transitions. [2022-07-12 10:28:10,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 105.20731707317073) internal successors, (8627), 82 states have internal predecessors, (8627), 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) [2022-07-12 10:28:10,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 206.0) internal successors, (17098), 83 states have internal predecessors, (17098), 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) [2022-07-12 10:28:10,876 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 206.0) internal successors, (17098), 83 states have internal predecessors, (17098), 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) [2022-07-12 10:28:10,877 INFO L186 Difference]: Start difference. First operand has 223 places, 201 transitions, 736 flow. Second operand 82 states and 8627 transitions. [2022-07-12 10:28:10,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 871 transitions, 5427 flow [2022-07-12 10:28:10,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 871 transitions, 5337 flow, removed 17 selfloop flow, removed 10 redundant places. [2022-07-12 10:28:10,901 INFO L242 Difference]: Finished difference. Result has 305 places, 535 transitions, 3792 flow [2022-07-12 10:28:10,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=3792, PETRI_PLACES=305, PETRI_TRANSITIONS=535} [2022-07-12 10:28:10,902 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2022-07-12 10:28:10,903 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 535 transitions, 3792 flow [2022-07-12 10:28:10,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 100.74509803921569) internal successors, (5138), 51 states have internal predecessors, (5138), 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) [2022-07-12 10:28:10,904 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:10,905 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:10,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:28:11,131 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 [2022-07-12 10:28:11,132 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 2 more)] === [2022-07-12 10:28:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash -778488841, now seen corresponding path program 1 times [2022-07-12 10:28:11,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983180229] [2022-07-12 10:28:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:11,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983180229] [2022-07-12 10:28:12,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983180229] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514867368] [2022-07-12 10:28:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:12,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:12,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:12,116 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) [2022-07-12 10:28:12,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:28:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:12,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 79 conjunts are in the unsatisfiable core [2022-07-12 10:28:12,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:12,314 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 [2022-07-12 10:28:12,569 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:28:12,570 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 [2022-07-12 10:28:13,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:13,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-07-12 10:28:14,135 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 23 treesize of output 25 [2022-07-12 10:28:14,247 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:28:14,247 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 15 [2022-07-12 10:28:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:14,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:15,114 INFO L356 Elim1Store]: treesize reduction 14, result has 22.2 percent of original size [2022-07-12 10:28:15,115 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 258 treesize of output 172 [2022-07-12 10:28:15,127 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 168 treesize of output 154 [2022-07-12 10:28:15,132 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 154 treesize of output 126 [2022-07-12 10:28:16,924 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 10 treesize of output 8 [2022-07-12 10:28:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:16,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514867368] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:28:16,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:28:16,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 29] total 76 [2022-07-12 10:28:16,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062072971] [2022-07-12 10:28:16,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:28:16,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-07-12 10:28:16,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:16,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-07-12 10:28:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=5251, Unknown=5, NotChecked=0, Total=5700 [2022-07-12 10:28:16,984 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 206 [2022-07-12 10:28:16,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 535 transitions, 3792 flow. Second operand has 76 states, 76 states have (on average 98.97368421052632) internal successors, (7522), 76 states have internal predecessors, (7522), 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) [2022-07-12 10:28:16,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:16,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 206 [2022-07-12 10:28:16,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:40,516 INFO L129 PetriNetUnfolder]: 14042/29572 cut-off events. [2022-07-12 10:28:40,516 INFO L130 PetriNetUnfolder]: For 83702/84042 co-relation queries the response was YES. [2022-07-12 10:28:40,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96280 conditions, 29572 events. 14042/29572 cut-off events. For 83702/84042 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 292223 event pairs, 1550 based on Foata normal form. 296/28195 useless extension candidates. Maximal degree in co-relation 96245. Up to 7873 conditions per place. [2022-07-12 10:28:41,166 INFO L132 encePairwiseOnDemand]: 162/206 looper letters, 1052 selfloop transitions, 566 changer transitions 133/1837 dead transitions. [2022-07-12 10:28:41,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 1837 transitions, 16450 flow [2022-07-12 10:28:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-07-12 10:28:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2022-07-12 10:28:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 13171 transitions. [2022-07-12 10:28:41,222 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5034401039675865 [2022-07-12 10:28:41,223 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 13171 transitions. [2022-07-12 10:28:41,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 13171 transitions. [2022-07-12 10:28:41,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:41,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 13171 transitions. [2022-07-12 10:28:41,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 103.70866141732283) internal successors, (13171), 127 states have internal predecessors, (13171), 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) [2022-07-12 10:28:41,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 206.0) internal successors, (26368), 128 states have internal predecessors, (26368), 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) [2022-07-12 10:28:41,360 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 206.0) internal successors, (26368), 128 states have internal predecessors, (26368), 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) [2022-07-12 10:28:41,360 INFO L186 Difference]: Start difference. First operand has 305 places, 535 transitions, 3792 flow. Second operand 127 states and 13171 transitions. [2022-07-12 10:28:41,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 1837 transitions, 16450 flow [2022-07-12 10:28:41,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1837 transitions, 15398 flow, removed 474 selfloop flow, removed 16 redundant places. [2022-07-12 10:28:41,693 INFO L242 Difference]: Finished difference. Result has 441 places, 1069 transitions, 10101 flow [2022-07-12 10:28:41,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=10101, PETRI_PLACES=441, PETRI_TRANSITIONS=1069} [2022-07-12 10:28:41,697 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 254 predicate places. [2022-07-12 10:28:41,698 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 1069 transitions, 10101 flow [2022-07-12 10:28:41,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 98.97368421052632) internal successors, (7522), 76 states have internal predecessors, (7522), 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) [2022-07-12 10:28:41,700 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:41,701 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:41,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 10:28:41,925 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 [2022-07-12 10:28:41,926 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 2 more)] === [2022-07-12 10:28:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 451262023, now seen corresponding path program 2 times [2022-07-12 10:28:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:41,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118601262] [2022-07-12 10:28:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:28:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:42,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118601262] [2022-07-12 10:28:42,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118601262] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:42,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715061231] [2022-07-12 10:28:42,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:28:42,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:42,704 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) [2022-07-12 10:28:42,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:28:42,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:28:42,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:28:42,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-12 10:28:42,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:43,439 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 13 treesize of output 9 [2022-07-12 10:28:43,866 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 [2022-07-12 10:28:44,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:44,117 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 22 treesize of output 24 [2022-07-12 10:28:44,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:44,233 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 22 treesize of output 24 [2022-07-12 10:28:44,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:28:44,320 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 22 treesize of output 24 [2022-07-12 10:28:44,391 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:28:44,392 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 27 treesize of output 14 [2022-07-12 10:28:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:44,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:28:45,494 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int)) (v_ArrVal_276 (Array Int Int)) (v_ArrVal_275 (Array Int Int)) (v_ArrVal_277 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_274)) (.cse1 (+ c_~x~0.offset 4))) (= (select (select (store (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_275) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_276) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_277) c_~x~0.base) .cse1) (select (select .cse0 c_~x~0.base) .cse1)))) is different from false [2022-07-12 10:28:45,510 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int)) (v_ArrVal_276 (Array Int Int)) (v_ArrVal_275 (Array Int Int)) (v_ArrVal_277 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_274)) (.cse1 (+ |c_ULTIMATE.start_main_#t~ret26#1.offset| 4))) (= (select (select .cse0 |c_ULTIMATE.start_main_#t~ret26#1.base|) .cse1) (select (select (store (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_275) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_276) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_277) |c_ULTIMATE.start_main_#t~ret26#1.base|) .cse1)))) is different from false [2022-07-12 10:28:45,520 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int)) (v_ArrVal_276 (Array Int Int)) (v_ArrVal_275 (Array Int Int)) (v_ArrVal_277 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_274)) (.cse1 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4))) (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1) (select (select (store (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_275) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_276) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_277) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1)))) is different from false [2022-07-12 10:28:45,526 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int)) (v_ArrVal_276 (Array Int Int)) (v_ArrVal_275 (Array Int Int)) (v_ArrVal_277 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_274)) (.cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (= (select (select (store (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_275) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_276) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_277) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse1) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse1)))) is different from false [2022-07-12 10:28:45,548 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:28:45,549 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 54 treesize of output 43 [2022-07-12 10:28:45,552 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 2710 treesize of output 2326 [2022-07-12 10:28:45,659 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 2290 treesize of output 2034 [2022-07-12 10:28:45,672 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 2034 treesize of output 1906 [2022-07-12 10:28:45,687 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 1906 treesize of output 1650 [2022-07-12 10:28:45,698 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 1650 treesize of output 1586 [2022-07-12 10:28:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2022-07-12 10:28:47,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715061231] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:28:47,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:28:47,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 24] total 63 [2022-07-12 10:28:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97567794] [2022-07-12 10:28:47,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:28:47,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-12 10:28:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-12 10:28:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3106, Unknown=30, NotChecked=468, Total=3906 [2022-07-12 10:28:47,159 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2022-07-12 10:28:47,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 1069 transitions, 10101 flow. Second operand has 63 states, 63 states have (on average 104.34920634920636) internal successors, (6574), 63 states have internal predecessors, (6574), 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) [2022-07-12 10:28:47,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:47,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2022-07-12 10:28:47,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:06,173 INFO L129 PetriNetUnfolder]: 25278/51848 cut-off events. [2022-07-12 10:29:06,173 INFO L130 PetriNetUnfolder]: For 309662/311006 co-relation queries the response was YES. [2022-07-12 10:29:06,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214744 conditions, 51848 events. 25278/51848 cut-off events. For 309662/311006 co-relation queries the response was YES. Maximal size of possible extension queue 2333. Compared 546200 event pairs, 2276 based on Foata normal form. 407/49357 useless extension candidates. Maximal degree in co-relation 214674. Up to 18641 conditions per place. [2022-07-12 10:29:07,327 INFO L132 encePairwiseOnDemand]: 169/206 looper letters, 1125 selfloop transitions, 998 changer transitions 39/2255 dead transitions. [2022-07-12 10:29:07,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 2255 transitions, 27014 flow [2022-07-12 10:29:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-12 10:29:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-07-12 10:29:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5197 transitions. [2022-07-12 10:29:07,334 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5367692625490601 [2022-07-12 10:29:07,334 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5197 transitions. [2022-07-12 10:29:07,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5197 transitions. [2022-07-12 10:29:07,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:07,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5197 transitions. [2022-07-12 10:29:07,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 110.57446808510639) internal successors, (5197), 47 states have internal predecessors, (5197), 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) [2022-07-12 10:29:07,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 206.0) internal successors, (9888), 48 states have internal predecessors, (9888), 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) [2022-07-12 10:29:07,357 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 206.0) internal successors, (9888), 48 states have internal predecessors, (9888), 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) [2022-07-12 10:29:07,358 INFO L186 Difference]: Start difference. First operand has 441 places, 1069 transitions, 10101 flow. Second operand 47 states and 5197 transitions. [2022-07-12 10:29:07,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 2255 transitions, 27014 flow [2022-07-12 10:29:09,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 2255 transitions, 25226 flow, removed 865 selfloop flow, removed 28 redundant places. [2022-07-12 10:29:09,418 INFO L242 Difference]: Finished difference. Result has 458 places, 1817 transitions, 20984 flow [2022-07-12 10:29:09,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=9033, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=20984, PETRI_PLACES=458, PETRI_TRANSITIONS=1817} [2022-07-12 10:29:09,419 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 271 predicate places. [2022-07-12 10:29:09,419 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 1817 transitions, 20984 flow [2022-07-12 10:29:09,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 104.34920634920636) internal successors, (6574), 63 states have internal predecessors, (6574), 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) [2022-07-12 10:29:09,420 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:09,421 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:29:09,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:29:09,622 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 [2022-07-12 10:29:09,622 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 2 more)] === [2022-07-12 10:29:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash 442380453, now seen corresponding path program 3 times [2022-07-12 10:29:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:09,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543066584] [2022-07-12 10:29:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:09,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:29:10,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:10,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543066584] [2022-07-12 10:29:10,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543066584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:29:10,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387031659] [2022-07-12 10:29:10,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:29:10,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:29:10,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:29:10,013 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) [2022-07-12 10:29:10,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:29:10,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:29:10,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:29:10,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-12 10:29:10,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:29:11,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:29:11,058 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 18 treesize of output 20 [2022-07-12 10:29:11,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:29:11,154 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 18 treesize of output 20 [2022-07-12 10:29:11,219 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:29:11,220 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 23 treesize of output 10 [2022-07-12 10:29:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:11,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:29:11,984 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-12 10:29:11,985 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 120 treesize of output 83 [2022-07-12 10:29:11,989 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 42 treesize of output 35 [2022-07-12 10:29:11,992 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 72 treesize of output 58 [2022-07-12 10:29:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:13,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387031659] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:29:13,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:29:13,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28, 28] total 65 [2022-07-12 10:29:13,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415620405] [2022-07-12 10:29:13,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:29:13,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-12 10:29:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-12 10:29:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3787, Unknown=3, NotChecked=0, Total=4160 [2022-07-12 10:29:13,056 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2022-07-12 10:29:13,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1817 transitions, 20984 flow. Second operand has 65 states, 65 states have (on average 104.18461538461538) internal successors, (6772), 65 states have internal predecessors, (6772), 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) [2022-07-12 10:29:13,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:13,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2022-07-12 10:29:13,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:35,132 INFO L129 PetriNetUnfolder]: 26546/55077 cut-off events. [2022-07-12 10:29:35,133 INFO L130 PetriNetUnfolder]: For 485674/487833 co-relation queries the response was YES. [2022-07-12 10:29:36,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260054 conditions, 55077 events. 26546/55077 cut-off events. For 485674/487833 co-relation queries the response was YES. Maximal size of possible extension queue 2499. Compared 592360 event pairs, 3740 based on Foata normal form. 412/52402 useless extension candidates. Maximal degree in co-relation 259964. Up to 18659 conditions per place. [2022-07-12 10:29:36,485 INFO L132 encePairwiseOnDemand]: 167/206 looper letters, 1618 selfloop transitions, 633 changer transitions 73/2413 dead transitions. [2022-07-12 10:29:36,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 2413 transitions, 33121 flow [2022-07-12 10:29:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-07-12 10:29:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-07-12 10:29:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 8435 transitions. [2022-07-12 10:29:36,494 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5249564351506099 [2022-07-12 10:29:36,494 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 8435 transitions. [2022-07-12 10:29:36,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 8435 transitions. [2022-07-12 10:29:36,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:36,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 8435 transitions. [2022-07-12 10:29:36,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 108.14102564102564) internal successors, (8435), 78 states have internal predecessors, (8435), 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) [2022-07-12 10:29:36,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 206.0) internal successors, (16274), 79 states have internal predecessors, (16274), 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) [2022-07-12 10:29:36,522 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 206.0) internal successors, (16274), 79 states have internal predecessors, (16274), 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) [2022-07-12 10:29:36,522 INFO L186 Difference]: Start difference. First operand has 458 places, 1817 transitions, 20984 flow. Second operand 78 states and 8435 transitions. [2022-07-12 10:29:36,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 2413 transitions, 33121 flow [2022-07-12 10:29:43,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 2413 transitions, 31347 flow, removed 858 selfloop flow, removed 21 redundant places. [2022-07-12 10:29:43,490 INFO L242 Difference]: Finished difference. Result has 531 places, 2124 transitions, 25156 flow [2022-07-12 10:29:43,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=19453, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=25156, PETRI_PLACES=531, PETRI_TRANSITIONS=2124} [2022-07-12 10:29:43,494 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 344 predicate places. [2022-07-12 10:29:43,494 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 2124 transitions, 25156 flow [2022-07-12 10:29:43,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 104.18461538461538) internal successors, (6772), 65 states have internal predecessors, (6772), 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) [2022-07-12 10:29:43,509 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:43,509 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:29:43,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:29:43,731 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 [2022-07-12 10:29:43,731 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 2 more)] === [2022-07-12 10:29:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:43,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2123914123, now seen corresponding path program 4 times [2022-07-12 10:29:43,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:43,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980648056] [2022-07-12 10:29:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:43,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:44,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980648056] [2022-07-12 10:29:44,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980648056] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:29:44,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78769336] [2022-07-12 10:29:44,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 10:29:44,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:29:44,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:29:44,396 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) [2022-07-12 10:29:44,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:29:44,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 10:29:44,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:29:44,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-12 10:29:44,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:29:45,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:29:45,523 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 18 treesize of output 20 [2022-07-12 10:29:45,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:29:45,630 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 18 treesize of output 20 [2022-07-12 10:29:45,717 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:29:45,717 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 23 treesize of output 10 [2022-07-12 10:29:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:46,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:29:46,434 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 116 treesize of output 76 [2022-07-12 10:29:46,436 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 76 treesize of output 64 [2022-07-12 10:29:46,440 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 34 treesize of output 28 [2022-07-12 10:29:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:29:47,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78769336] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:29:47,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:29:47,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 28] total 72 [2022-07-12 10:29:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676284285] [2022-07-12 10:29:47,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:29:47,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-07-12 10:29:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:47,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-07-12 10:29:47,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=4732, Unknown=3, NotChecked=0, Total=5112 [2022-07-12 10:29:47,491 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 206 [2022-07-12 10:29:47,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 2124 transitions, 25156 flow. Second operand has 72 states, 72 states have (on average 102.15277777777777) internal successors, (7355), 72 states have internal predecessors, (7355), 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) [2022-07-12 10:29:47,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:47,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 206 [2022-07-12 10:29:47,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand