./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.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/popl20-three-array-sum.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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:40:34,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:40:34,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:40:34,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:40:34,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:40:34,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:40:34,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:40:34,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:40:34,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:40:34,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:40:34,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:40:34,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:40:34,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:40:34,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:40:34,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:40:34,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:40:34,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:40:34,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:40:34,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:40:34,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:40:34,728 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:40:34,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:40:34,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:40:34,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:40:34,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:40:34,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:40:34,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:40:34,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:40:34,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:40:34,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:40:34,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:40:34,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:40:34,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:40:34,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:40:34,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:40:34,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:40:34,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:40:34,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:40:34,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:40:34,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:40:34,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:40:34,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:40:34,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:40:34,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:40:34,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:40:34,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:40:34,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:40:34,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:40:34,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:40:34,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:40:34,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:40:34,765 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:40:34,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:40:34,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:40:34,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:40:34,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:40:34,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:40:34,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:40:34,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:40:34,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:40:34,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:40:34,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:40:34,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:40:34,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:40:34,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:40:34,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:40:34,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:40:34,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:40:34,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:40:34,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:40:34,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:40:34,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:40:34,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:40:34,769 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:40:34,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:40:34,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:40:34,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2022-07-12 10:40:35,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:40:35,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:40:35,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:40:35,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:40:35,039 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:40:35,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-07-12 10:40:35,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d22252b/b89ce0eb880242b1be3b2767759e7e8e/FLAG226155e3c [2022-07-12 10:40:35,499 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:40:35,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-07-12 10:40:35,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d22252b/b89ce0eb880242b1be3b2767759e7e8e/FLAG226155e3c [2022-07-12 10:40:35,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d22252b/b89ce0eb880242b1be3b2767759e7e8e [2022-07-12 10:40:35,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:40:35,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:40:35,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:40:35,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:40:35,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:40:35,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b69901e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35, skipping insertion in model container [2022-07-12 10:40:35,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:40:35,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:40:35,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-07-12 10:40:35,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:40:35,776 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:40:35,815 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-07-12 10:40:35,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:40:35,836 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:40:35,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35 WrapperNode [2022-07-12 10:40:35,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:40:35,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:40:35,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:40:35,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:40:35,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,892 INFO L137 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 150 [2022-07-12 10:40:35,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:40:35,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:40:35,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:40:35,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:40:35,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:40:35,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:40:35,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:40:35,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:40:35,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (1/1) ... [2022-07-12 10:40:35,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:40:35,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:40:35,980 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 10:40:36,000 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 10:40:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:40:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:40:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:40:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:40:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:40:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:40:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:40:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:40:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:40:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:40:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:40:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:40:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:40:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:40:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:40:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:40:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:40:36,024 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 10:40:36,156 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:40:36,172 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:40:36,467 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:40:36,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:40:36,500 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-12 10:40:36,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:40:36 BoogieIcfgContainer [2022-07-12 10:40:36,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:40:36,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:40:36,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:40:36,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:40:36,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:40:35" (1/3) ... [2022-07-12 10:40:36,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd73797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:40:36, skipping insertion in model container [2022-07-12 10:40:36,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:40:35" (2/3) ... [2022-07-12 10:40:36,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd73797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:40:36, skipping insertion in model container [2022-07-12 10:40:36,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:40:36" (3/3) ... [2022-07-12 10:40:36,514 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2022-07-12 10:40:36,522 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:40:36,529 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:40:36,530 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:40:36,530 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:40:36,583 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:40:36,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 218 places, 228 transitions, 480 flow [2022-07-12 10:40:36,711 INFO L129 PetriNetUnfolder]: 20/225 cut-off events. [2022-07-12 10:40:36,711 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:40:36,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 225 events. 20/225 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 148 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2022-07-12 10:40:36,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 228 transitions, 480 flow [2022-07-12 10:40:36,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 214 transitions, 446 flow [2022-07-12 10:40:36,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:40:36,751 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@19d16acc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@506e3022 [2022-07-12 10:40:36,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:40:36,815 INFO L129 PetriNetUnfolder]: 20/213 cut-off events. [2022-07-12 10:40:36,818 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:40:36,819 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:36,819 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] [2022-07-12 10:40:36,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:36,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash -504584022, now seen corresponding path program 1 times [2022-07-12 10:40:36,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:36,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455001922] [2022-07-12 10:40:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:36,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:37,106 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 10:40:37,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455001922] [2022-07-12 10:40:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455001922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:40:37,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:40:37,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:40:37,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460522104] [2022-07-12 10:40:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:40:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:40:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:40:37,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:40:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:40:37,153 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 228 [2022-07-12 10:40:37,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 214 transitions, 446 flow. Second operand has 2 states, 2 states have (on average 211.0) internal successors, (422), 2 states have internal predecessors, (422), 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 10:40:37,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:40:37,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 228 [2022-07-12 10:40:37,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:40:37,252 INFO L129 PetriNetUnfolder]: 20/247 cut-off events. [2022-07-12 10:40:37,253 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-12 10:40:37,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 247 events. 20/247 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 322 event pairs, 7 based on Foata normal form. 31/258 useless extension candidates. Maximal degree in co-relation 176. Up to 28 conditions per place. [2022-07-12 10:40:37,258 INFO L132 encePairwiseOnDemand]: 215/228 looper letters, 8 selfloop transitions, 0 changer transitions 7/201 dead transitions. [2022-07-12 10:40:37,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 201 transitions, 436 flow [2022-07-12 10:40:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:40:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:40:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 433 transitions. [2022-07-12 10:40:37,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9495614035087719 [2022-07-12 10:40:37,278 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 433 transitions. [2022-07-12 10:40:37,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 433 transitions. [2022-07-12 10:40:37,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:40:37,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 433 transitions. [2022-07-12 10:40:37,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.5) internal successors, (433), 2 states have internal predecessors, (433), 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 10:40:37,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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 10:40:37,296 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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 10:40:37,297 INFO L186 Difference]: Start difference. First operand has 204 places, 214 transitions, 446 flow. Second operand 2 states and 433 transitions. [2022-07-12 10:40:37,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 201 transitions, 436 flow [2022-07-12 10:40:37,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 201 transitions, 424 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:40:37,307 INFO L242 Difference]: Finished difference. Result has 199 places, 194 transitions, 394 flow [2022-07-12 10:40:37,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=394, PETRI_PLACES=199, PETRI_TRANSITIONS=194} [2022-07-12 10:40:37,314 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, -5 predicate places. [2022-07-12 10:40:37,315 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 194 transitions, 394 flow [2022-07-12 10:40:37,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 211.0) internal successors, (422), 2 states have internal predecessors, (422), 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 10:40:37,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:37,316 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] [2022-07-12 10:40:37,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:40:37,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:37,317 INFO L85 PathProgramCache]: Analyzing trace with hash -343539870, now seen corresponding path program 1 times [2022-07-12 10:40:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:37,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703625021] [2022-07-12 10:40:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:37,692 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 10:40:37,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703625021] [2022-07-12 10:40:37,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703625021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:40:37,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:40:37,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:40:37,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711166758] [2022-07-12 10:40:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:40:37,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:40:37,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:40:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:40:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:40:37,699 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 228 [2022-07-12 10:40:37,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 194 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 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 10:40:37,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:40:37,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 228 [2022-07-12 10:40:37,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:40:37,917 INFO L129 PetriNetUnfolder]: 70/452 cut-off events. [2022-07-12 10:40:37,918 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-12 10:40:37,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 452 events. 70/452 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1486 event pairs, 17 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 590. Up to 62 conditions per place. [2022-07-12 10:40:37,923 INFO L132 encePairwiseOnDemand]: 220/228 looper letters, 52 selfloop transitions, 6 changer transitions 4/215 dead transitions. [2022-07-12 10:40:37,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 215 transitions, 568 flow [2022-07-12 10:40:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:40:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:40:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1225 transitions. [2022-07-12 10:40:37,928 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7675438596491229 [2022-07-12 10:40:37,928 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1225 transitions. [2022-07-12 10:40:37,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1225 transitions. [2022-07-12 10:40:37,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:40:37,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1225 transitions. [2022-07-12 10:40:37,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 10:40:37,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:37,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:37,937 INFO L186 Difference]: Start difference. First operand has 199 places, 194 transitions, 394 flow. Second operand 7 states and 1225 transitions. [2022-07-12 10:40:37,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 215 transitions, 568 flow [2022-07-12 10:40:37,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 215 transitions, 568 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:40:37,956 INFO L242 Difference]: Finished difference. Result has 201 places, 197 transitions, 425 flow [2022-07-12 10:40:37,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=201, PETRI_TRANSITIONS=197} [2022-07-12 10:40:37,958 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, -3 predicate places. [2022-07-12 10:40:37,958 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 197 transitions, 425 flow [2022-07-12 10:40:37,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 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 10:40:37,959 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:37,959 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] [2022-07-12 10:40:37,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:40:37,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:37,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1180149095, now seen corresponding path program 1 times [2022-07-12 10:40:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:37,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328521750] [2022-07-12 10:40:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:37,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:38,163 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 10:40:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:38,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328521750] [2022-07-12 10:40:38,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328521750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:40:38,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:40:38,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:40:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776039611] [2022-07-12 10:40:38,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:40:38,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:40:38,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:40:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:40:38,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:40:38,169 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 228 [2022-07-12 10:40:38,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 197 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 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 10:40:38,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:40:38,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 228 [2022-07-12 10:40:38,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:40:38,793 INFO L129 PetriNetUnfolder]: 1164/2746 cut-off events. [2022-07-12 10:40:38,793 INFO L130 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2022-07-12 10:40:38,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 2746 events. 1164/2746 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17632 event pairs, 581 based on Foata normal form. 0/2087 useless extension candidates. Maximal degree in co-relation 4696. Up to 1051 conditions per place. [2022-07-12 10:40:38,817 INFO L132 encePairwiseOnDemand]: 209/228 looper letters, 120 selfloop transitions, 28 changer transitions 0/288 dead transitions. [2022-07-12 10:40:38,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 288 transitions, 919 flow [2022-07-12 10:40:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:40:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:40:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1887 transitions. [2022-07-12 10:40:38,823 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7523923444976076 [2022-07-12 10:40:38,823 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1887 transitions. [2022-07-12 10:40:38,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1887 transitions. [2022-07-12 10:40:38,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:40:38,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1887 transitions. [2022-07-12 10:40:38,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 171.54545454545453) internal successors, (1887), 11 states have internal predecessors, (1887), 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 10:40:38,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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 10:40:38,835 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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 10:40:38,835 INFO L186 Difference]: Start difference. First operand has 201 places, 197 transitions, 425 flow. Second operand 11 states and 1887 transitions. [2022-07-12 10:40:38,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 288 transitions, 919 flow [2022-07-12 10:40:38,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 288 transitions, 913 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-12 10:40:38,843 INFO L242 Difference]: Finished difference. Result has 210 places, 214 transitions, 552 flow [2022-07-12 10:40:38,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=552, PETRI_PLACES=210, PETRI_TRANSITIONS=214} [2022-07-12 10:40:38,846 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, 6 predicate places. [2022-07-12 10:40:38,847 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 214 transitions, 552 flow [2022-07-12 10:40:38,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 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 10:40:38,848 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:38,848 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] [2022-07-12 10:40:38,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:40:38,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:38,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:38,849 INFO L85 PathProgramCache]: Analyzing trace with hash -83321624, now seen corresponding path program 1 times [2022-07-12 10:40:38,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:38,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620443473] [2022-07-12 10:40:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:38,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:39,026 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 10:40:39,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:39,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620443473] [2022-07-12 10:40:39,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620443473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:40:39,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:40:39,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:40:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983582684] [2022-07-12 10:40:39,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:40:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:40:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:40:39,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:40:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:40:39,034 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-07-12 10:40:39,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 214 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 162.85714285714286) internal successors, (1140), 7 states have internal predecessors, (1140), 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 10:40:39,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:40:39,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-07-12 10:40:39,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:40:39,608 INFO L129 PetriNetUnfolder]: 894/2275 cut-off events. [2022-07-12 10:40:39,609 INFO L130 PetriNetUnfolder]: For 585/615 co-relation queries the response was YES. [2022-07-12 10:40:39,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 2275 events. 894/2275 cut-off events. For 585/615 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13675 event pairs, 481 based on Foata normal form. 30/1960 useless extension candidates. Maximal degree in co-relation 4186. Up to 1093 conditions per place. [2022-07-12 10:40:39,627 INFO L132 encePairwiseOnDemand]: 209/228 looper letters, 56 selfloop transitions, 14 changer transitions 77/286 dead transitions. [2022-07-12 10:40:39,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 286 transitions, 1018 flow [2022-07-12 10:40:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:40:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:40:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1873 transitions. [2022-07-12 10:40:39,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7468102073365231 [2022-07-12 10:40:39,632 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1873 transitions. [2022-07-12 10:40:39,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1873 transitions. [2022-07-12 10:40:39,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:40:39,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1873 transitions. [2022-07-12 10:40:39,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 170.27272727272728) internal successors, (1873), 11 states have internal predecessors, (1873), 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 10:40:39,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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 10:40:39,645 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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 10:40:39,645 INFO L186 Difference]: Start difference. First operand has 210 places, 214 transitions, 552 flow. Second operand 11 states and 1873 transitions. [2022-07-12 10:40:39,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 286 transitions, 1018 flow [2022-07-12 10:40:39,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 286 transitions, 1013 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:40:39,656 INFO L242 Difference]: Finished difference. Result has 222 places, 200 transitions, 512 flow [2022-07-12 10:40:39,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=512, PETRI_PLACES=222, PETRI_TRANSITIONS=200} [2022-07-12 10:40:39,662 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, 18 predicate places. [2022-07-12 10:40:39,662 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 200 transitions, 512 flow [2022-07-12 10:40:39,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.85714285714286) internal successors, (1140), 7 states have internal predecessors, (1140), 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 10:40:39,663 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:39,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:40:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:40:39,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:39,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:39,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1346727361, now seen corresponding path program 1 times [2022-07-12 10:40:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:39,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922454777] [2022-07-12 10:40:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:40:39,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:39,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922454777] [2022-07-12 10:40:39,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922454777] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:40:39,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109721446] [2022-07-12 10:40:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:39,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:40:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:40:39,827 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 10:40:39,834 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 10:40:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:39,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:40:39,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:40:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:40:40,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:40:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:40:40,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109721446] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:40:40,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:40:40,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-12 10:40:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579150562] [2022-07-12 10:40:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:40:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:40:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:40:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:40:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:40:40,475 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-07-12 10:40:40,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 200 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 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 10:40:40,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:40:40,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-07-12 10:40:40,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:40:40,754 INFO L129 PetriNetUnfolder]: 635/1510 cut-off events. [2022-07-12 10:40:40,754 INFO L130 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-07-12 10:40:40,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2991 conditions, 1510 events. 635/1510 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8349 event pairs, 273 based on Foata normal form. 29/1312 useless extension candidates. Maximal degree in co-relation 2977. Up to 603 conditions per place. [2022-07-12 10:40:40,767 INFO L132 encePairwiseOnDemand]: 220/228 looper letters, 65 selfloop transitions, 7 changer transitions 0/211 dead transitions. [2022-07-12 10:40:40,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 211 transitions, 693 flow [2022-07-12 10:40:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:40:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:40:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1167 transitions. [2022-07-12 10:40:40,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.731203007518797 [2022-07-12 10:40:40,771 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1167 transitions. [2022-07-12 10:40:40,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1167 transitions. [2022-07-12 10:40:40,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:40:40,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1167 transitions. [2022-07-12 10:40:40,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.71428571428572) internal successors, (1167), 7 states have internal predecessors, (1167), 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 10:40:40,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:40,777 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:40,777 INFO L186 Difference]: Start difference. First operand has 222 places, 200 transitions, 512 flow. Second operand 7 states and 1167 transitions. [2022-07-12 10:40:40,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 211 transitions, 693 flow [2022-07-12 10:40:40,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 211 transitions, 620 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-07-12 10:40:40,784 INFO L242 Difference]: Finished difference. Result has 207 places, 202 transitions, 480 flow [2022-07-12 10:40:40,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=207, PETRI_TRANSITIONS=202} [2022-07-12 10:40:40,785 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, 3 predicate places. [2022-07-12 10:40:40,785 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 202 transitions, 480 flow [2022-07-12 10:40:40,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 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 10:40:40,786 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:40,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:40:40,815 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 10:40:40,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:40:41,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:41,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1301123104, now seen corresponding path program 1 times [2022-07-12 10:40:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:41,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453105182] [2022-07-12 10:40:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:40:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453105182] [2022-07-12 10:40:41,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453105182] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:40:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537268519] [2022-07-12 10:40:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:40:41,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:40:41,123 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 10:40:41,125 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 10:40:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:41,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:40:41,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:40:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:40:41,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:40:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:40:41,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537268519] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:40:41,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:40:41,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-12 10:40:41,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035972433] [2022-07-12 10:40:41,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:40:41,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:40:41,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:40:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:40:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:40:41,732 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 228 [2022-07-12 10:40:41,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 202 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 10:40:41,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:40:41,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 228 [2022-07-12 10:40:41,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:40:41,948 INFO L129 PetriNetUnfolder]: 449/1048 cut-off events. [2022-07-12 10:40:41,948 INFO L130 PetriNetUnfolder]: For 356/469 co-relation queries the response was YES. [2022-07-12 10:40:41,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 1048 events. 449/1048 cut-off events. For 356/469 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5197 event pairs, 121 based on Foata normal form. 113/961 useless extension candidates. Maximal degree in co-relation 2112. Up to 401 conditions per place. [2022-07-12 10:40:41,957 INFO L132 encePairwiseOnDemand]: 220/228 looper letters, 64 selfloop transitions, 7 changer transitions 0/212 dead transitions. [2022-07-12 10:40:41,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 212 transitions, 657 flow [2022-07-12 10:40:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:40:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:40:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1178 transitions. [2022-07-12 10:40:41,963 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2022-07-12 10:40:41,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1178 transitions. [2022-07-12 10:40:41,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1178 transitions. [2022-07-12 10:40:41,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:40:41,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1178 transitions. [2022-07-12 10:40:41,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.28571428571428) internal successors, (1178), 7 states have internal predecessors, (1178), 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 10:40:41,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:41,970 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:41,971 INFO L186 Difference]: Start difference. First operand has 207 places, 202 transitions, 480 flow. Second operand 7 states and 1178 transitions. [2022-07-12 10:40:41,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 212 transitions, 657 flow [2022-07-12 10:40:41,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 212 transitions, 648 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:40:41,976 INFO L242 Difference]: Finished difference. Result has 211 places, 203 transitions, 499 flow [2022-07-12 10:40:41,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=211, PETRI_TRANSITIONS=203} [2022-07-12 10:40:41,979 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, 7 predicate places. [2022-07-12 10:40:41,979 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 203 transitions, 499 flow [2022-07-12 10:40:41,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 10:40:41,980 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:41,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:40:42,006 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 10:40:42,204 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,SelfDestructingSolverStorable5 [2022-07-12 10:40:42,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash 672073108, now seen corresponding path program 1 times [2022-07-12 10:40:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:42,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988780966] [2022-07-12 10:40:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:40:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:42,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988780966] [2022-07-12 10:40:42,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988780966] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:40:42,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010939539] [2022-07-12 10:40:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:42,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:40:42,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:40:42,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:40:42,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:40:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:42,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:40:42,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:40:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:40:42,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:40:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:40:42,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010939539] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:40:42,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:40:42,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-12 10:40:42,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41776044] [2022-07-12 10:40:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:40:42,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:40:42,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:40:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:40:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:40:42,774 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 228 [2022-07-12 10:40:42,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 203 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 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 10:40:42,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:40:42,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 228 [2022-07-12 10:40:42,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:40:42,956 INFO L129 PetriNetUnfolder]: 440/1049 cut-off events. [2022-07-12 10:40:42,957 INFO L130 PetriNetUnfolder]: For 596/849 co-relation queries the response was YES. [2022-07-12 10:40:42,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1049 events. 440/1049 cut-off events. For 596/849 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5218 event pairs, 109 based on Foata normal form. 253/1194 useless extension candidates. Maximal degree in co-relation 2220. Up to 415 conditions per place. [2022-07-12 10:40:42,968 INFO L132 encePairwiseOnDemand]: 220/228 looper letters, 66 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2022-07-12 10:40:42,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 213 transitions, 682 flow [2022-07-12 10:40:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:40:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:40:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1172 transitions. [2022-07-12 10:40:42,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7343358395989975 [2022-07-12 10:40:42,972 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1172 transitions. [2022-07-12 10:40:42,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1172 transitions. [2022-07-12 10:40:42,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:40:42,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1172 transitions. [2022-07-12 10:40:42,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.42857142857142) internal successors, (1172), 7 states have internal predecessors, (1172), 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 10:40:42,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:42,980 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 10:40:42,980 INFO L186 Difference]: Start difference. First operand has 211 places, 203 transitions, 499 flow. Second operand 7 states and 1172 transitions. [2022-07-12 10:40:42,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 213 transitions, 682 flow [2022-07-12 10:40:42,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 213 transitions, 671 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:40:42,989 INFO L242 Difference]: Finished difference. Result has 214 places, 204 transitions, 516 flow [2022-07-12 10:40:42,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=516, PETRI_PLACES=214, PETRI_TRANSITIONS=204} [2022-07-12 10:40:42,990 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, 10 predicate places. [2022-07-12 10:40:42,991 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 204 transitions, 516 flow [2022-07-12 10:40:42,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 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 10:40:42,992 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:40:42,992 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, 1, 1, 1, 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 10:40:43,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:40:43,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:40:43,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:40:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:40:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1599084967, now seen corresponding path program 1 times [2022-07-12 10:40:43,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:40:43,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471790016] [2022-07-12 10:40:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:40:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:40:44,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:40:44,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471790016] [2022-07-12 10:40:44,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471790016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:40:44,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033657287] [2022-07-12 10:40:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:40:44,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:40:44,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:40:44,333 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 10:40:44,334 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 10:40:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:40:44,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-12 10:40:44,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:40:45,251 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 10:40:45,486 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 11 treesize of output 7 [2022-07-12 10:40:46,017 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:40:46,019 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 10:40:46,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:40:46,392 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 10:40:46,495 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 10:40:46,575 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 10:40:46,932 INFO L356 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2022-07-12 10:40:46,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2022-07-12 10:40:49,856 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:40:49,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 165 [2022-07-12 10:40:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:40:49,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:41:33,148 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 10:41:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:41:33,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033657287] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:41:33,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:41:33,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 16] total 69 [2022-07-12 10:41:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426017850] [2022-07-12 10:41:33,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:41:33,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-07-12 10:41:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:41:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-07-12 10:41:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=4148, Unknown=5, NotChecked=0, Total=4692 [2022-07-12 10:41:33,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 228 [2022-07-12 10:41:33,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 204 transitions, 516 flow. Second operand has 69 states, 69 states have (on average 81.02898550724638) internal successors, (5591), 69 states have internal predecessors, (5591), 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 10:41:33,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:41:33,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 228 [2022-07-12 10:41:33,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:41:40,322 INFO L129 PetriNetUnfolder]: 10448/17154 cut-off events. [2022-07-12 10:41:40,322 INFO L130 PetriNetUnfolder]: For 11571/11571 co-relation queries the response was YES. [2022-07-12 10:41:40,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41800 conditions, 17154 events. 10448/17154 cut-off events. For 11571/11571 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 122586 event pairs, 488 based on Foata normal form. 1/16578 useless extension candidates. Maximal degree in co-relation 41786. Up to 6286 conditions per place. [2022-07-12 10:41:40,453 INFO L132 encePairwiseOnDemand]: 168/228 looper letters, 344 selfloop transitions, 136 changer transitions 4/553 dead transitions. [2022-07-12 10:41:40,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 553 transitions, 2650 flow [2022-07-12 10:41:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-07-12 10:41:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-07-12 10:41:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4650 transitions. [2022-07-12 10:41:40,469 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.3708133971291866 [2022-07-12 10:41:40,469 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 4650 transitions. [2022-07-12 10:41:40,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 4650 transitions. [2022-07-12 10:41:40,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:41:40,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 4650 transitions. [2022-07-12 10:41:40,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 84.54545454545455) internal successors, (4650), 55 states have internal predecessors, (4650), 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 10:41:40,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 228.0) internal successors, (12768), 56 states have internal predecessors, (12768), 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 10:41:40,515 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 228.0) internal successors, (12768), 56 states have internal predecessors, (12768), 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 10:41:40,515 INFO L186 Difference]: Start difference. First operand has 214 places, 204 transitions, 516 flow. Second operand 55 states and 4650 transitions. [2022-07-12 10:41:40,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 553 transitions, 2650 flow [2022-07-12 10:41:40,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 553 transitions, 2623 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:41:40,580 INFO L242 Difference]: Finished difference. Result has 282 places, 312 transitions, 1348 flow [2022-07-12 10:41:40,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1348, PETRI_PLACES=282, PETRI_TRANSITIONS=312} [2022-07-12 10:41:40,583 INFO L279 CegarLoopForPetriNet]: 204 programPoint places, 78 predicate places. [2022-07-12 10:41:40,584 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 312 transitions, 1348 flow [2022-07-12 10:41:40,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 81.02898550724638) internal successors, (5591), 69 states have internal predecessors, (5591), 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 10:41:40,586 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:41:40,586 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, 1, 1, 1, 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 10:41:40,614 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 10:41:40,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:41:40,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:41:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:41:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1725345177, now seen corresponding path program 2 times [2022-07-12 10:41:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:41:40,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124160520] [2022-07-12 10:41:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:41:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:41:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:41:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:41:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:41:42,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124160520] [2022-07-12 10:41:42,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124160520] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:41:42,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301866139] [2022-07-12 10:41:42,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:41:42,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:41:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:41:42,420 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 10:41:42,479 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 10:41:42,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:41:42,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:41:42,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-12 10:41:42,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:41:42,869 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 10:41:43,152 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:41:43,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2022-07-12 10:41:43,603 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-12 10:41:43,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-07-12 10:41:44,175 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 10:41:44,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2022-07-12 10:41:44,979 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:41:44,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2022-07-12 10:41:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:41:45,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:41:45,444 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:41:45,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 606 treesize of output 542 [2022-07-12 10:41:45,565 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 354 treesize of output 346 [2022-07-12 10:41:45,932 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:41:45,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 758 treesize of output 550