./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/bench-exp2x9.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 d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:00:48,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:00:48,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:00:48,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:00:48,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:00:48,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:00:48,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:00:48,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:00:48,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:00:48,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:00:48,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:00:48,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:00:48,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:00:48,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:00:48,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:00:48,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:00:48,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:00:48,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:00:48,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:00:48,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:00:48,843 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:00:48,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:00:48,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:00:48,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:00:48,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:00:48,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:00:48,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:00:48,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:00:48,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:00:48,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:00:48,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:00:48,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:00:48,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:00:48,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:00:48,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:00:48,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:00:48,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:00:48,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:00:48,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:00:48,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:00:48,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:00:48,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:00:48,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:00:48,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:00:48,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:00:48,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:00:48,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:00:48,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:00:48,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:00:48,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:00:48,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:00:48,885 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:00:48,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:00:48,885 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:00:48,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:00:48,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:00:48,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:00:48,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:00:48,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:00:48,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:00:48,887 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:00:48,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:00:48,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:00:48,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:00:48,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:00:48,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:00:48,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:00:48,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:00:48,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:00:48,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:00:48,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:00:48,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:00:48,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:00:48,889 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:00:48,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:00:48,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:00:48,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2022-07-13 22:00:49,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:00:49,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:00:49,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:00:49,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:00:49,130 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:00:49,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-07-13 22:00:49,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6fde707/3434211ea81c4c678f2fc4d905c02416/FLAG23ff2d38d [2022-07-13 22:00:49,550 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:00:49,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-07-13 22:00:49,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6fde707/3434211ea81c4c678f2fc4d905c02416/FLAG23ff2d38d [2022-07-13 22:00:49,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6fde707/3434211ea81c4c678f2fc4d905c02416 [2022-07-13 22:00:49,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:00:49,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:00:49,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:00:49,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:00:49,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:00:49,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a05f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49, skipping insertion in model container [2022-07-13 22:00:49,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:00:49,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:00:49,742 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/bench-exp2x9.wvr.c[2669,2682] [2022-07-13 22:00:49,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:00:49,762 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:00:49,794 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/bench-exp2x9.wvr.c[2669,2682] [2022-07-13 22:00:49,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:00:49,806 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:00:49,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49 WrapperNode [2022-07-13 22:00:49,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:00:49,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:00:49,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:00:49,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:00:49,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,847 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-07-13 22:00:49,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:00:49,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:00:49,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:00:49,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:00:49,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:00:49,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:00:49,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:00:49,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:00:49,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (1/1) ... [2022-07-13 22:00:49,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:00:49,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:00:49,914 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) [2022-07-13 22:00:49,921 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 [2022-07-13 22:00:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:00:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:00:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:00:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:00:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:00:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:00:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:00:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-13 22:00:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-13 22:00:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:00:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:00:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:00:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:00:49,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:00:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:00:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:00:49,955 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:00:50,039 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:00:50,040 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:00:50,250 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:00:50,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:00:50,257 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 22:00:50,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:00:50 BoogieIcfgContainer [2022-07-13 22:00:50,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:00:50,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:00:50,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:00:50,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:00:50,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:00:49" (1/3) ... [2022-07-13 22:00:50,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0d92f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:00:50, skipping insertion in model container [2022-07-13 22:00:50,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:00:49" (2/3) ... [2022-07-13 22:00:50,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0d92f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:00:50, skipping insertion in model container [2022-07-13 22:00:50,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:00:50" (3/3) ... [2022-07-13 22:00:50,271 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-07-13 22:00:50,276 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:00:50,289 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:00:50,289 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:00:50,290 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:00:50,359 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-13 22:00:50,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2022-07-13 22:00:50,444 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2022-07-13 22:00:50,446 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:00:50,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-07-13 22:00:50,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2022-07-13 22:00:50,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2022-07-13 22:00:50,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:00:50,477 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@7e90f989, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f92fbd5 [2022-07-13 22:00:50,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 22:00:50,526 INFO L129 PetriNetUnfolder]: 10/131 cut-off events. [2022-07-13 22:00:50,531 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:00:50,532 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:00:50,534 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] [2022-07-13 22:00:50,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:00:50,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:00:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash 685807791, now seen corresponding path program 1 times [2022-07-13 22:00:50,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:00:50,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151288707] [2022-07-13 22:00:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:00:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:00:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:00:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:00:50,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:00:50,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151288707] [2022-07-13 22:00:50,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151288707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:00:50,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:00:50,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:00:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535951207] [2022-07-13 22:00:50,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:00:50,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:00:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:00:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:00:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:00:50,733 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2022-07-13 22:00:50,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2022-07-13 22:00:50,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:00:50,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2022-07-13 22:00:50,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:00:50,766 INFO L129 PetriNetUnfolder]: 4/126 cut-off events. [2022-07-13 22:00:50,767 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 22:00:50,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2022-07-13 22:00:50,769 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2022-07-13 22:00:50,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2022-07-13 22:00:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:00:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:00:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2022-07-13 22:00:50,780 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2022-07-13 22:00:50,781 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2022-07-13 22:00:50,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2022-07-13 22:00:50,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:00:50,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2022-07-13 22:00:50,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 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) [2022-07-13 22:00:50,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2022-07-13 22:00:50,792 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2022-07-13 22:00:50,794 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2022-07-13 22:00:50,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2022-07-13 22:00:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-13 22:00:50,805 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2022-07-13 22:00:50,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-07-13 22:00:50,809 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2022-07-13 22:00:50,809 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2022-07-13 22:00:50,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2022-07-13 22:00:50,809 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:00:50,810 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] [2022-07-13 22:00:50,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:00:50,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:00:50,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:00:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2022-07-13 22:00:50,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:00:50,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851986974] [2022-07-13 22:00:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:00:50,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:00:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:00:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:00:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:00:51,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851986974] [2022-07-13 22:00:51,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851986974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:00:51,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:00:51,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:00:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070342764] [2022-07-13 22:00:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:00:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:00:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:00:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:00:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:00:51,216 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2022-07-13 22:00:51,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2022-07-13 22:00:51,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:00:51,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2022-07-13 22:00:51,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:00:54,307 INFO L129 PetriNetUnfolder]: 24847/33594 cut-off events. [2022-07-13 22:00:54,307 INFO L130 PetriNetUnfolder]: For 860/934 co-relation queries the response was YES. [2022-07-13 22:00:54,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 33594 events. 24847/33594 cut-off events. For 860/934 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 189991 event pairs, 11708 based on Foata normal form. 1/29807 useless extension candidates. Maximal degree in co-relation 67679. Up to 32788 conditions per place. [2022-07-13 22:00:54,548 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2022-07-13 22:00:54,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2022-07-13 22:00:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:00:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:00:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2022-07-13 22:00:54,555 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2022-07-13 22:00:54,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2022-07-13 22:00:54,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2022-07-13 22:00:54,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:00:54,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2022-07-13 22:00:54,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 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) [2022-07-13 22:00:54,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:00:54,563 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:00:54,563 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2022-07-13 22:00:54,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2022-07-13 22:00:54,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:00:54,567 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2022-07-13 22:00:54,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-07-13 22:00:54,568 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-07-13 22:00:54,569 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2022-07-13 22:00:54,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2022-07-13 22:00:54,569 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:00:54,570 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] [2022-07-13 22:00:54,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:00:54,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:00:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:00:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash -860683858, now seen corresponding path program 1 times [2022-07-13 22:00:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:00:54,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035230185] [2022-07-13 22:00:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:00:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:00:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:00:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:00:54,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:00:54,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035230185] [2022-07-13 22:00:54,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035230185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:00:54,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:00:54,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:00:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667662289] [2022-07-13 22:00:54,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:00:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:00:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:00:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:00:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:00:54,724 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-13 22:00:54,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 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) [2022-07-13 22:00:54,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:00:54,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-13 22:00:54,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:00:55,394 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([348] L53-->L54: Formula: (= v_~x2~0_9 (* v_~x2~0_10 2)) InVars {~x2~0=v_~x2~0_10} OutVars{~x2~0=v_~x2~0_9} AuxVars[] AssignedVars[~x2~0][111], [30#L109-4true, 42#L38-2true, 15#L82true, 175#true, 91#L54true, Black: 170#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 155#true, Black: 162#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296))))), Black: 168#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 158#true, 23#L68true]) [2022-07-13 22:00:55,395 INFO L384 tUnfolder$Statistics]: this new event has 82 ancestors and is cut-off event [2022-07-13 22:00:55,395 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-13 22:00:55,395 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-13 22:00:55,396 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-07-13 22:00:55,415 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([348] L53-->L54: Formula: (= v_~x2~0_9 (* v_~x2~0_10 2)) InVars {~x2~0=v_~x2~0_10} OutVars{~x2~0=v_~x2~0_9} AuxVars[] AssignedVars[~x2~0][111], [15#L82true, 175#true, 91#L54true, 43#L110-2true, Black: 170#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 155#true, Black: 162#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296))))), Black: 168#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 158#true, 23#L68true]) [2022-07-13 22:00:55,416 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is cut-off event [2022-07-13 22:00:55,416 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-13 22:00:55,416 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-13 22:00:55,416 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-07-13 22:00:55,529 INFO L129 PetriNetUnfolder]: 5288/9459 cut-off events. [2022-07-13 22:00:55,530 INFO L130 PetriNetUnfolder]: For 710/816 co-relation queries the response was YES. [2022-07-13 22:00:55,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18608 conditions, 9459 events. 5288/9459 cut-off events. For 710/816 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72997 event pairs, 764 based on Foata normal form. 30/7487 useless extension candidates. Maximal degree in co-relation 18601. Up to 5185 conditions per place. [2022-07-13 22:00:55,581 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 88 selfloop transitions, 14 changer transitions 0/184 dead transitions. [2022-07-13 22:00:55,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 184 transitions, 648 flow [2022-07-13 22:00:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:00:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:00:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2022-07-13 22:00:55,584 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7420901246404602 [2022-07-13 22:00:55,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2022-07-13 22:00:55,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2022-07-13 22:00:55,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:00:55,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2022-07-13 22:00:55,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 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) [2022-07-13 22:00:55,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:00:55,588 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:00:55,588 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 7 states and 774 transitions. [2022-07-13 22:00:55,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 184 transitions, 648 flow [2022-07-13 22:00:55,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 184 transitions, 627 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-13 22:00:55,594 INFO L242 Difference]: Finished difference. Result has 138 places, 134 transitions, 366 flow [2022-07-13 22:00:55,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2022-07-13 22:00:55,596 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-07-13 22:00:55,596 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 366 flow [2022-07-13 22:00:55,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 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) [2022-07-13 22:00:55,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:00:55,597 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] [2022-07-13 22:00:55,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:00:55,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:00:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:00:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash -621750282, now seen corresponding path program 2 times [2022-07-13 22:00:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:00:55,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792479199] [2022-07-13 22:00:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:00:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:00:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:00:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:00:55,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:00:55,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792479199] [2022-07-13 22:00:55,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792479199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:00:55,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:00:55,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:00:55,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825585754] [2022-07-13 22:00:55,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:00:55,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:00:55,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:00:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:00:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:00:55,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-07-13 22:00:55,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2022-07-13 22:00:55,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:00:55,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-07-13 22:00:55,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:00:58,594 INFO L129 PetriNetUnfolder]: 32659/44813 cut-off events. [2022-07-13 22:00:58,594 INFO L130 PetriNetUnfolder]: For 27730/27818 co-relation queries the response was YES. [2022-07-13 22:00:58,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109057 conditions, 44813 events. 32659/44813 cut-off events. For 27730/27818 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 273140 event pairs, 16410 based on Foata normal form. 37/42221 useless extension candidates. Maximal degree in co-relation 109049. Up to 43690 conditions per place. [2022-07-13 22:00:58,960 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 88 selfloop transitions, 12 changer transitions 1/163 dead transitions. [2022-07-13 22:00:58,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 163 transitions, 672 flow [2022-07-13 22:00:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:00:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:00:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2022-07-13 22:00:58,962 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6297539149888143 [2022-07-13 22:00:58,962 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2022-07-13 22:00:58,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2022-07-13 22:00:58,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:00:58,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2022-07-13 22:00:58,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2022-07-13 22:00:58,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2022-07-13 22:00:58,966 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2022-07-13 22:00:58,966 INFO L186 Difference]: Start difference. First operand has 138 places, 134 transitions, 366 flow. Second operand 6 states and 563 transitions. [2022-07-13 22:00:58,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 163 transitions, 672 flow [2022-07-13 22:00:58,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 163 transitions, 668 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:00:58,977 INFO L242 Difference]: Finished difference. Result has 143 places, 139 transitions, 432 flow [2022-07-13 22:00:58,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=143, PETRI_TRANSITIONS=139} [2022-07-13 22:00:58,978 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 8 predicate places. [2022-07-13 22:00:58,978 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 139 transitions, 432 flow [2022-07-13 22:00:58,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2022-07-13 22:00:58,978 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:00:58,978 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] [2022-07-13 22:00:58,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:00:58,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:00:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:00:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -284960424, now seen corresponding path program 1 times [2022-07-13 22:00:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:00:58,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995994521] [2022-07-13 22:00:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:00:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:00:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:00:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:00:59,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:00:59,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995994521] [2022-07-13 22:00:59,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995994521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:00:59,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:00:59,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:00:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208774034] [2022-07-13 22:00:59,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:00:59,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:00:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:00:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:00:59,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:00:59,194 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-13 22:00:59,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 139 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 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) [2022-07-13 22:00:59,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:00:59,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-13 22:00:59,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:00,151 INFO L129 PetriNetUnfolder]: 5963/13479 cut-off events. [2022-07-13 22:01:00,151 INFO L130 PetriNetUnfolder]: For 6868/7049 co-relation queries the response was YES. [2022-07-13 22:01:00,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27216 conditions, 13479 events. 5963/13479 cut-off events. For 6868/7049 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 133624 event pairs, 3044 based on Foata normal form. 182/11972 useless extension candidates. Maximal degree in co-relation 27205. Up to 5202 conditions per place. [2022-07-13 22:01:00,235 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 94 selfloop transitions, 15 changer transitions 0/193 dead transitions. [2022-07-13 22:01:00,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 819 flow [2022-07-13 22:01:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:01:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:01:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2022-07-13 22:01:00,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7420901246404602 [2022-07-13 22:01:00,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2022-07-13 22:01:00,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2022-07-13 22:01:00,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:00,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2022-07-13 22:01:00,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 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) [2022-07-13 22:01:00,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:01:00,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:01:00,241 INFO L186 Difference]: Start difference. First operand has 143 places, 139 transitions, 432 flow. Second operand 7 states and 774 transitions. [2022-07-13 22:01:00,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 819 flow [2022-07-13 22:01:00,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 193 transitions, 797 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-13 22:01:00,250 INFO L242 Difference]: Finished difference. Result has 148 places, 142 transitions, 490 flow [2022-07-13 22:01:00,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2022-07-13 22:01:00,251 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 13 predicate places. [2022-07-13 22:01:00,251 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 490 flow [2022-07-13 22:01:00,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 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) [2022-07-13 22:01:00,252 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:00,252 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] [2022-07-13 22:01:00,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:01:00,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:01:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1211854294, now seen corresponding path program 1 times [2022-07-13 22:01:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:00,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245845325] [2022-07-13 22:01:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:00,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245845325] [2022-07-13 22:01:00,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245845325] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:01:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180782116] [2022-07-13 22:01:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:00,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:01:00,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:01:00,373 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) [2022-07-13 22:01:00,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:01:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:00,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:01:00,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:01:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:00,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:01:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:01,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180782116] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:01:01,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:01:01,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-07-13 22:01:01,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936087786] [2022-07-13 22:01:01,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:01:01,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:01:01,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:01:01,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:01:01,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-13 22:01:01,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 490 flow. Second operand has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 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) [2022-07-13 22:01:01,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:01,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-13 22:01:01,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:03,045 INFO L129 PetriNetUnfolder]: 13397/21670 cut-off events. [2022-07-13 22:01:03,045 INFO L130 PetriNetUnfolder]: For 50248/50724 co-relation queries the response was YES. [2022-07-13 22:01:03,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63137 conditions, 21670 events. 13397/21670 cut-off events. For 50248/50724 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 179630 event pairs, 1103 based on Foata normal form. 217/19607 useless extension candidates. Maximal degree in co-relation 63124. Up to 12306 conditions per place. [2022-07-13 22:01:03,189 INFO L132 encePairwiseOnDemand]: 136/149 looper letters, 157 selfloop transitions, 22 changer transitions 0/265 dead transitions. [2022-07-13 22:01:03,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 265 transitions, 1554 flow [2022-07-13 22:01:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:01:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 22:01:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1285 transitions. [2022-07-13 22:01:03,192 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7186800894854586 [2022-07-13 22:01:03,192 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1285 transitions. [2022-07-13 22:01:03,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1285 transitions. [2022-07-13 22:01:03,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:03,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1285 transitions. [2022-07-13 22:01:03,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 107.08333333333333) internal successors, (1285), 12 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:03,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 149.0) internal successors, (1937), 13 states have internal predecessors, (1937), 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) [2022-07-13 22:01:03,198 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 149.0) internal successors, (1937), 13 states have internal predecessors, (1937), 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) [2022-07-13 22:01:03,198 INFO L186 Difference]: Start difference. First operand has 148 places, 142 transitions, 490 flow. Second operand 12 states and 1285 transitions. [2022-07-13 22:01:03,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 265 transitions, 1554 flow [2022-07-13 22:01:03,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 265 transitions, 1520 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-07-13 22:01:03,234 INFO L242 Difference]: Finished difference. Result has 164 places, 154 transitions, 618 flow [2022-07-13 22:01:03,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=164, PETRI_TRANSITIONS=154} [2022-07-13 22:01:03,235 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-07-13 22:01:03,235 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 154 transitions, 618 flow [2022-07-13 22:01:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 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) [2022-07-13 22:01:03,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:03,236 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] [2022-07-13 22:01:03,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:01:03,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 22:01:03,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:01:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:03,440 INFO L85 PathProgramCache]: Analyzing trace with hash 785459654, now seen corresponding path program 1 times [2022-07-13 22:01:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050486268] [2022-07-13 22:01:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:03,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050486268] [2022-07-13 22:01:03,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050486268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:01:03,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:01:03,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:01:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136081084] [2022-07-13 22:01:03,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:03,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:01:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:01:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:01:03,601 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-07-13 22:01:03,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 154 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2022-07-13 22:01:03,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:03,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-07-13 22:01:03,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:10,072 INFO L129 PetriNetUnfolder]: 53406/78664 cut-off events. [2022-07-13 22:01:10,072 INFO L130 PetriNetUnfolder]: For 134613/134663 co-relation queries the response was YES. [2022-07-13 22:01:10,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232294 conditions, 78664 events. 53406/78664 cut-off events. For 134613/134663 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 582026 event pairs, 32395 based on Foata normal form. 21/78491 useless extension candidates. Maximal degree in co-relation 232274. Up to 72554 conditions per place. [2022-07-13 22:01:10,990 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 105 selfloop transitions, 13 changer transitions 8/188 dead transitions. [2022-07-13 22:01:10,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 188 transitions, 1104 flow [2022-07-13 22:01:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:01:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:01:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-07-13 22:01:10,992 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2022-07-13 22:01:10,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-07-13 22:01:10,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-07-13 22:01:10,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:10,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-07-13 22:01:10,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:01:10,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2022-07-13 22:01:10,995 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2022-07-13 22:01:10,995 INFO L186 Difference]: Start difference. First operand has 164 places, 154 transitions, 618 flow. Second operand 6 states and 562 transitions. [2022-07-13 22:01:10,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 188 transitions, 1104 flow [2022-07-13 22:01:11,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 188 transitions, 1098 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:01:11,545 INFO L242 Difference]: Finished difference. Result has 168 places, 158 transitions, 701 flow [2022-07-13 22:01:11,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=701, PETRI_PLACES=168, PETRI_TRANSITIONS=158} [2022-07-13 22:01:11,546 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2022-07-13 22:01:11,546 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 158 transitions, 701 flow [2022-07-13 22:01:11,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2022-07-13 22:01:11,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:11,546 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] [2022-07-13 22:01:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:01:11,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:01:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1705357160, now seen corresponding path program 2 times [2022-07-13 22:01:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:11,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555414145] [2022-07-13 22:01:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:11,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555414145] [2022-07-13 22:01:11,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555414145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:01:11,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:01:11,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:01:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429433537] [2022-07-13 22:01:11,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:01:11,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:01:11,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:01:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:01:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:01:11,632 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-13 22:01:11,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 158 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 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) [2022-07-13 22:01:11,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:01:11,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-13 22:01:11,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:01:13,657 INFO L129 PetriNetUnfolder]: 14241/22849 cut-off events. [2022-07-13 22:01:13,657 INFO L130 PetriNetUnfolder]: For 63726/64268 co-relation queries the response was YES. [2022-07-13 22:01:13,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76187 conditions, 22849 events. 14241/22849 cut-off events. For 63726/64268 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 188845 event pairs, 4251 based on Foata normal form. 543/22291 useless extension candidates. Maximal degree in co-relation 76164. Up to 15411 conditions per place. [2022-07-13 22:01:13,881 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 122 selfloop transitions, 17 changer transitions 0/227 dead transitions. [2022-07-13 22:01:13,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 227 transitions, 1399 flow [2022-07-13 22:01:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:01:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:01:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2022-07-13 22:01:13,883 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.738255033557047 [2022-07-13 22:01:13,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2022-07-13 22:01:13,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2022-07-13 22:01:13,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:01:13,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2022-07-13 22:01:13,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 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) [2022-07-13 22:01:13,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:01:13,887 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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) [2022-07-13 22:01:13,887 INFO L186 Difference]: Start difference. First operand has 168 places, 158 transitions, 701 flow. Second operand 7 states and 770 transitions. [2022-07-13 22:01:13,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 227 transitions, 1399 flow [2022-07-13 22:01:13,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 227 transitions, 1378 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-13 22:01:13,968 INFO L242 Difference]: Finished difference. Result has 174 places, 161 transitions, 769 flow [2022-07-13 22:01:13,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=769, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-07-13 22:01:13,969 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 39 predicate places. [2022-07-13 22:01:13,969 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 769 flow [2022-07-13 22:01:13,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 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) [2022-07-13 22:01:13,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:01:13,970 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:01:13,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:01:13,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:01:13,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:01:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash -333652181, now seen corresponding path program 1 times [2022-07-13 22:01:13,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:01:13,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879764748] [2022-07-13 22:01:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:13,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:01:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:01:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:01:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:01:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879764748] [2022-07-13 22:01:15,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879764748] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:01:15,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309796471] [2022-07-13 22:01:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:01:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:01:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:01:15,835 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) [2022-07-13 22:01:15,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process