./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-array-int-trans.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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:21:30,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:21:30,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:21:30,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:21:30,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:21:30,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:21:30,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:21:30,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:21:30,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:21:30,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:21:30,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:21:30,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:21:30,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:21:30,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:21:30,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:21:30,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:21:30,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:21:30,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:21:30,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:21:30,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:21:30,812 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:21:30,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:21:30,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:21:30,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:21:30,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:21:30,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:21:30,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:21:30,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:21:30,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:21:30,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:21:30,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:21:30,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:21:30,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:21:30,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:21:30,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:21:30,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:21:30,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:21:30,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:21:30,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:21:30,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:21:30,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:21:30,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:21:30,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:21:30,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:21:30,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:21:30,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:21:30,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:21:30,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:21:30,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:21:30,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:21:30,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:21:30,842 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:21:30,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:21:30,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:21:30,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:21:30,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:21:30,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:21:30,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:21:30,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:21:30,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:21:30,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:21:30,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:21:30,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:21:30,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:21:30,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:21:30,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:21:30,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:21:30,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:21:30,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:21:30,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:21:30,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:21:30,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:21:30,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:21:30,845 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:21:30,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:21:30,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:21:30,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-07-12 10:21:30,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:21:31,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:21:31,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:21:31,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:21:31,004 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:21:31,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-07-12 10:21:31,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c53e269c1/5fe0b83d848f468b90d758037d593059/FLAG20a9877d3 [2022-07-12 10:21:31,420 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:21:31,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-07-12 10:21:31,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c53e269c1/5fe0b83d848f468b90d758037d593059/FLAG20a9877d3 [2022-07-12 10:21:31,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c53e269c1/5fe0b83d848f468b90d758037d593059 [2022-07-12 10:21:31,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:21:31,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:21:31,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:21:31,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:21:31,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:21:31,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2933b33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31, skipping insertion in model container [2022-07-12 10:21:31,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:21:31,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:21:31,656 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/chl-array-int-trans.wvr.c[2728,2741] [2022-07-12 10:21:31,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:21:31,681 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:21:31,715 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/chl-array-int-trans.wvr.c[2728,2741] [2022-07-12 10:21:31,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:21:31,733 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:21:31,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31 WrapperNode [2022-07-12 10:21:31,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:21:31,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:21:31,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:21:31,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:21:31,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,772 INFO L137 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 277 [2022-07-12 10:21:31,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:21:31,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:21:31,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:21:31,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:21:31,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:21:31,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:21:31,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:21:31,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:21:31,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (1/1) ... [2022-07-12 10:21:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:21:31,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:21:31,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:21:31,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:21:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:21:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:21:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:21:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:21:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:21:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:21:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:21:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:21:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:21:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:21:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:21:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:21:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:21:31,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:21:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:21:31,857 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:21:31,918 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:21:31,919 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:21:32,218 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:21:32,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:21:32,228 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-12 10:21:32,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:21:32 BoogieIcfgContainer [2022-07-12 10:21:32,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:21:32,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:21:32,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:21:32,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:21:32,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:21:31" (1/3) ... [2022-07-12 10:21:32,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d634fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:21:32, skipping insertion in model container [2022-07-12 10:21:32,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:21:31" (2/3) ... [2022-07-12 10:21:32,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d634fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:21:32, skipping insertion in model container [2022-07-12 10:21:32,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:21:32" (3/3) ... [2022-07-12 10:21:32,236 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-07-12 10:21:32,239 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:21:32,245 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:21:32,245 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:21:32,245 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:21:32,331 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:21:32,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 332 places, 350 transitions, 724 flow [2022-07-12 10:21:32,438 INFO L129 PetriNetUnfolder]: 28/347 cut-off events. [2022-07-12 10:21:32,439 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:21:32,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 28/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 584 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-07-12 10:21:32,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 350 transitions, 724 flow [2022-07-12 10:21:32,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 336 transitions, 690 flow [2022-07-12 10:21:32,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:21:32,479 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@bdeacd0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15852084 [2022-07-12 10:21:32,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:21:32,559 INFO L129 PetriNetUnfolder]: 27/331 cut-off events. [2022-07-12 10:21:32,559 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:21:32,559 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:32,560 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:32,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -36079225, now seen corresponding path program 1 times [2022-07-12 10:21:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:32,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57686728] [2022-07-12 10:21:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:32,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:21:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:32,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57686728] [2022-07-12 10:21:32,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57686728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:21:32,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:21:32,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:21:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744354604] [2022-07-12 10:21:32,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:32,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:21:32,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:21:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:21:32,804 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 350 [2022-07-12 10:21:32,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 336 transitions, 690 flow. Second operand has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:32,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:32,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 350 [2022-07-12 10:21:32,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:32,876 INFO L129 PetriNetUnfolder]: 9/317 cut-off events. [2022-07-12 10:21:32,877 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-12 10:21:32,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 317 events. 9/317 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 561 event pairs, 0 based on Foata normal form. 25/320 useless extension candidates. Maximal degree in co-relation 256. Up to 7 conditions per place. [2022-07-12 10:21:32,882 INFO L132 encePairwiseOnDemand]: 331/350 looper letters, 6 selfloop transitions, 0 changer transitions 7/317 dead transitions. [2022-07-12 10:21:32,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 317 transitions, 664 flow [2022-07-12 10:21:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:21:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:21:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2022-07-12 10:21:32,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9614285714285714 [2022-07-12 10:21:32,906 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2022-07-12 10:21:32,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2022-07-12 10:21:32,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:32,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2022-07-12 10:21:32,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:32,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:32,924 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:32,926 INFO L186 Difference]: Start difference. First operand has 318 places, 336 transitions, 690 flow. Second operand 2 states and 673 transitions. [2022-07-12 10:21:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 317 transitions, 664 flow [2022-07-12 10:21:32,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 317 transitions, 652 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:21:32,962 INFO L242 Difference]: Finished difference. Result has 313 places, 310 transitions, 626 flow [2022-07-12 10:21:32,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=626, PETRI_PLACES=313, PETRI_TRANSITIONS=310} [2022-07-12 10:21:32,969 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, -5 predicate places. [2022-07-12 10:21:32,970 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 310 transitions, 626 flow [2022-07-12 10:21:32,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:32,971 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:32,971 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:32,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:21:32,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash -330795675, now seen corresponding path program 1 times [2022-07-12 10:21:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:32,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523111320] [2022-07-12 10:21:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:21:33,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:33,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523111320] [2022-07-12 10:21:33,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523111320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:21:33,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:21:33,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-12 10:21:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340425450] [2022-07-12 10:21:33,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:33,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 10:21:33,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 10:21:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:21:33,546 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 350 [2022-07-12 10:21:33,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 310 transitions, 626 flow. Second operand has 20 states, 20 states have (on average 243.3) internal successors, (4866), 20 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:33,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:33,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 350 [2022-07-12 10:21:33,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:34,903 INFO L129 PetriNetUnfolder]: 687/5537 cut-off events. [2022-07-12 10:21:34,904 INFO L130 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-07-12 10:21:34,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 5537 events. 687/5537 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 56816 event pairs, 287 based on Foata normal form. 1/4936 useless extension candidates. Maximal degree in co-relation 6568. Up to 391 conditions per place. [2022-07-12 10:21:34,946 INFO L132 encePairwiseOnDemand]: 324/350 looper letters, 127 selfloop transitions, 26 changer transitions 4/384 dead transitions. [2022-07-12 10:21:34,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 384 transitions, 1101 flow [2022-07-12 10:21:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:21:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:21:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5918 transitions. [2022-07-12 10:21:34,955 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7045238095238096 [2022-07-12 10:21:34,955 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5918 transitions. [2022-07-12 10:21:34,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5918 transitions. [2022-07-12 10:21:34,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:34,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5918 transitions. [2022-07-12 10:21:34,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 246.58333333333334) internal successors, (5918), 24 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:34,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 350.0) internal successors, (8750), 25 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:35,016 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 350.0) internal successors, (8750), 25 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:35,016 INFO L186 Difference]: Start difference. First operand has 313 places, 310 transitions, 626 flow. Second operand 24 states and 5918 transitions. [2022-07-12 10:21:35,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 384 transitions, 1101 flow [2022-07-12 10:21:35,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 384 transitions, 1101 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:21:35,024 INFO L242 Difference]: Finished difference. Result has 336 places, 320 transitions, 734 flow [2022-07-12 10:21:35,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=734, PETRI_PLACES=336, PETRI_TRANSITIONS=320} [2022-07-12 10:21:35,025 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 18 predicate places. [2022-07-12 10:21:35,025 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 320 transitions, 734 flow [2022-07-12 10:21:35,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 243.3) internal successors, (4866), 20 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:35,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:35,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:35,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:21:35,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1144664097, now seen corresponding path program 2 times [2022-07-12 10:21:35,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:35,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060392996] [2022-07-12 10:21:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:35,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:21:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:35,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060392996] [2022-07-12 10:21:35,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060392996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:21:35,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:21:35,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:21:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705313207] [2022-07-12 10:21:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:35,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:21:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:21:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:21:35,211 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-12 10:21:35,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 320 transitions, 734 flow. Second operand has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:35,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:35,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-12 10:21:35,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:36,987 INFO L129 PetriNetUnfolder]: 1283/11290 cut-off events. [2022-07-12 10:21:36,987 INFO L130 PetriNetUnfolder]: For 729/751 co-relation queries the response was YES. [2022-07-12 10:21:37,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 11290 events. 1283/11290 cut-off events. For 729/751 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 137834 event pairs, 693 based on Foata normal form. 3/10078 useless extension candidates. Maximal degree in co-relation 13858. Up to 657 conditions per place. [2022-07-12 10:21:37,065 INFO L132 encePairwiseOnDemand]: 328/350 looper letters, 151 selfloop transitions, 23 changer transitions 6/414 dead transitions. [2022-07-12 10:21:37,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 414 transitions, 1375 flow [2022-07-12 10:21:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:21:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:21:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5043 transitions. [2022-07-12 10:21:37,074 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7204285714285714 [2022-07-12 10:21:37,074 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5043 transitions. [2022-07-12 10:21:37,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5043 transitions. [2022-07-12 10:21:37,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:37,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5043 transitions. [2022-07-12 10:21:37,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 252.15) internal successors, (5043), 20 states have internal predecessors, (5043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:37,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:37,094 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:37,095 INFO L186 Difference]: Start difference. First operand has 336 places, 320 transitions, 734 flow. Second operand 20 states and 5043 transitions. [2022-07-12 10:21:37,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 414 transitions, 1375 flow [2022-07-12 10:21:37,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 414 transitions, 1337 flow, removed 5 selfloop flow, removed 13 redundant places. [2022-07-12 10:21:37,105 INFO L242 Difference]: Finished difference. Result has 351 places, 334 transitions, 850 flow [2022-07-12 10:21:37,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=850, PETRI_PLACES=351, PETRI_TRANSITIONS=334} [2022-07-12 10:21:37,107 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 33 predicate places. [2022-07-12 10:21:37,108 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 334 transitions, 850 flow [2022-07-12 10:21:37,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:37,109 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:37,109 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:37,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:21:37,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1845871625, now seen corresponding path program 1 times [2022-07-12 10:21:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:37,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728054322] [2022-07-12 10:21:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:37,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:21:37,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:37,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728054322] [2022-07-12 10:21:37,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728054322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:21:37,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:21:37,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:21:37,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921238308] [2022-07-12 10:21:37,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:37,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:21:37,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:37,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:21:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:21:37,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-12 10:21:37,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 334 transitions, 850 flow. Second operand has 14 states, 14 states have (on average 248.78571428571428) internal successors, (3483), 14 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:37,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:37,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-12 10:21:37,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:39,199 INFO L129 PetriNetUnfolder]: 1283/10402 cut-off events. [2022-07-12 10:21:39,199 INFO L130 PetriNetUnfolder]: For 1140/1264 co-relation queries the response was YES. [2022-07-12 10:21:39,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13282 conditions, 10402 events. 1283/10402 cut-off events. For 1140/1264 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 124615 event pairs, 456 based on Foata normal form. 2/9238 useless extension candidates. Maximal degree in co-relation 13262. Up to 783 conditions per place. [2022-07-12 10:21:39,282 INFO L132 encePairwiseOnDemand]: 330/350 looper letters, 130 selfloop transitions, 26 changer transitions 5/394 dead transitions. [2022-07-12 10:21:39,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 394 transitions, 1339 flow [2022-07-12 10:21:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:21:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:21:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4780 transitions. [2022-07-12 10:21:39,291 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.718796992481203 [2022-07-12 10:21:39,291 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4780 transitions. [2022-07-12 10:21:39,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4780 transitions. [2022-07-12 10:21:39,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:39,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4780 transitions. [2022-07-12 10:21:39,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 251.57894736842104) internal successors, (4780), 19 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:39,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:39,311 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:39,311 INFO L186 Difference]: Start difference. First operand has 351 places, 334 transitions, 850 flow. Second operand 19 states and 4780 transitions. [2022-07-12 10:21:39,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 394 transitions, 1339 flow [2022-07-12 10:21:39,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 394 transitions, 1320 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-12 10:21:39,320 INFO L242 Difference]: Finished difference. Result has 368 places, 337 transitions, 919 flow [2022-07-12 10:21:39,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=919, PETRI_PLACES=368, PETRI_TRANSITIONS=337} [2022-07-12 10:21:39,322 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 50 predicate places. [2022-07-12 10:21:39,322 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 337 transitions, 919 flow [2022-07-12 10:21:39,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.78571428571428) internal successors, (3483), 14 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:39,323 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:39,324 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:21:39,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1906080933, now seen corresponding path program 1 times [2022-07-12 10:21:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:39,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805254467] [2022-07-12 10:21:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:39,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:21:39,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:39,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805254467] [2022-07-12 10:21:39,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805254467] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:39,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762590581] [2022-07-12 10:21:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:39,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:21:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:21:39,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:21:39,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:21:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:39,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 10:21:39,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:21:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:21:40,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:21:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:21:40,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762590581] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:40,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:21:40,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-07-12 10:21:40,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604014563] [2022-07-12 10:21:40,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:40,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:21:40,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:40,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:21:40,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:21:40,598 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-12 10:21:40,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 337 transitions, 919 flow. Second operand has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:40,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:40,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-12 10:21:40,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:43,505 INFO L129 PetriNetUnfolder]: 2616/21161 cut-off events. [2022-07-12 10:21:43,506 INFO L130 PetriNetUnfolder]: For 1937/1939 co-relation queries the response was YES. [2022-07-12 10:21:43,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26682 conditions, 21161 events. 2616/21161 cut-off events. For 1937/1939 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 292098 event pairs, 1445 based on Foata normal form. 0/18965 useless extension candidates. Maximal degree in co-relation 26658. Up to 900 conditions per place. [2022-07-12 10:21:43,637 INFO L132 encePairwiseOnDemand]: 332/350 looper letters, 163 selfloop transitions, 28 changer transitions 3/450 dead transitions. [2022-07-12 10:21:43,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 450 transitions, 1642 flow [2022-07-12 10:21:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:21:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:21:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5273 transitions. [2022-07-12 10:21:43,646 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7929323308270677 [2022-07-12 10:21:43,646 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5273 transitions. [2022-07-12 10:21:43,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5273 transitions. [2022-07-12 10:21:43,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:43,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5273 transitions. [2022-07-12 10:21:43,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 277.5263157894737) internal successors, (5273), 19 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:43,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:43,662 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:43,662 INFO L186 Difference]: Start difference. First operand has 368 places, 337 transitions, 919 flow. Second operand 19 states and 5273 transitions. [2022-07-12 10:21:43,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 450 transitions, 1642 flow [2022-07-12 10:21:43,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 450 transitions, 1576 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-07-12 10:21:43,673 INFO L242 Difference]: Finished difference. Result has 376 places, 350 transitions, 1003 flow [2022-07-12 10:21:43,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1003, PETRI_PLACES=376, PETRI_TRANSITIONS=350} [2022-07-12 10:21:43,674 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 58 predicate places. [2022-07-12 10:21:43,674 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 350 transitions, 1003 flow [2022-07-12 10:21:43,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:43,675 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:43,675 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:43,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 10:21:43,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:21:43,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1964388484, now seen corresponding path program 1 times [2022-07-12 10:21:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:43,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705613257] [2022-07-12 10:21:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:43,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:21:44,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:44,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705613257] [2022-07-12 10:21:44,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705613257] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:44,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75275186] [2022-07-12 10:21:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:21:44,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:21:44,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:21:44,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:21:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:44,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 10:21:44,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:21:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:21:44,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:21:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:21:44,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75275186] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:44,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:21:44,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16, 13] total 32 [2022-07-12 10:21:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701402108] [2022-07-12 10:21:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:21:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:44,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:21:44,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-07-12 10:21:44,892 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-12 10:21:44,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 350 transitions, 1003 flow. Second operand has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:44,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:44,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-12 10:21:44,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:47,528 INFO L129 PetriNetUnfolder]: 2115/18383 cut-off events. [2022-07-12 10:21:47,528 INFO L130 PetriNetUnfolder]: For 2343/2347 co-relation queries the response was YES. [2022-07-12 10:21:47,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23422 conditions, 18383 events. 2115/18383 cut-off events. For 2343/2347 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 239479 event pairs, 1162 based on Foata normal form. 8/16494 useless extension candidates. Maximal degree in co-relation 23396. Up to 948 conditions per place. [2022-07-12 10:21:47,709 INFO L132 encePairwiseOnDemand]: 328/350 looper letters, 167 selfloop transitions, 36 changer transitions 4/444 dead transitions. [2022-07-12 10:21:47,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 444 transitions, 1735 flow [2022-07-12 10:21:47,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:21:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:21:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4320 transitions. [2022-07-12 10:21:47,716 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7260504201680672 [2022-07-12 10:21:47,716 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4320 transitions. [2022-07-12 10:21:47,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4320 transitions. [2022-07-12 10:21:47,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:47,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4320 transitions. [2022-07-12 10:21:47,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 254.11764705882354) internal successors, (4320), 17 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:47,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:47,731 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:47,731 INFO L186 Difference]: Start difference. First operand has 376 places, 350 transitions, 1003 flow. Second operand 17 states and 4320 transitions. [2022-07-12 10:21:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 444 transitions, 1735 flow [2022-07-12 10:21:47,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 444 transitions, 1713 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-12 10:21:47,740 INFO L242 Difference]: Finished difference. Result has 392 places, 365 transitions, 1163 flow [2022-07-12 10:21:47,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1163, PETRI_PLACES=392, PETRI_TRANSITIONS=365} [2022-07-12 10:21:47,743 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 74 predicate places. [2022-07-12 10:21:47,743 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 365 transitions, 1163 flow [2022-07-12 10:21:47,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:47,744 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:47,744 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:47,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 10:21:47,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 10:21:47,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:47,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2020113811, now seen corresponding path program 1 times [2022-07-12 10:21:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:47,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688638130] [2022-07-12 10:21:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:21:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688638130] [2022-07-12 10:21:48,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688638130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507203957] [2022-07-12 10:21:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:48,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:21:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:21:48,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:21:48,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:21:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:48,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 10:21:48,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:21:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:21:48,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:21:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:21:48,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507203957] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:48,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:21:48,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 29 [2022-07-12 10:21:48,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209758678] [2022-07-12 10:21:48,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:48,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:21:48,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:21:48,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-07-12 10:21:48,933 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-12 10:21:48,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 365 transitions, 1163 flow. Second operand has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:48,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:48,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-12 10:21:48,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:52,215 INFO L129 PetriNetUnfolder]: 4241/22791 cut-off events. [2022-07-12 10:21:52,216 INFO L130 PetriNetUnfolder]: For 4767/4825 co-relation queries the response was YES. [2022-07-12 10:21:52,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32948 conditions, 22791 events. 4241/22791 cut-off events. For 4767/4825 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 293119 event pairs, 1428 based on Foata normal form. 46/20288 useless extension candidates. Maximal degree in co-relation 32915. Up to 1606 conditions per place. [2022-07-12 10:21:52,411 INFO L132 encePairwiseOnDemand]: 332/350 looper letters, 163 selfloop transitions, 31 changer transitions 1/456 dead transitions. [2022-07-12 10:21:52,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 456 transitions, 1836 flow [2022-07-12 10:21:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:21:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:21:52,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4987 transitions. [2022-07-12 10:21:52,416 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7915873015873016 [2022-07-12 10:21:52,416 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4987 transitions. [2022-07-12 10:21:52,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4987 transitions. [2022-07-12 10:21:52,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:52,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4987 transitions. [2022-07-12 10:21:52,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.05555555555554) internal successors, (4987), 18 states have internal predecessors, (4987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:52,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:52,428 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:52,428 INFO L186 Difference]: Start difference. First operand has 392 places, 365 transitions, 1163 flow. Second operand 18 states and 4987 transitions. [2022-07-12 10:21:52,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 456 transitions, 1836 flow [2022-07-12 10:21:52,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 456 transitions, 1799 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-07-12 10:21:52,651 INFO L242 Difference]: Finished difference. Result has 399 places, 371 transitions, 1213 flow [2022-07-12 10:21:52,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1213, PETRI_PLACES=399, PETRI_TRANSITIONS=371} [2022-07-12 10:21:52,652 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 81 predicate places. [2022-07-12 10:21:52,652 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 371 transitions, 1213 flow [2022-07-12 10:21:52,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:52,653 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:52,653 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:52,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:21:52,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:21:52,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 15889408, now seen corresponding path program 1 times [2022-07-12 10:21:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:52,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138045192] [2022-07-12 10:21:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:21:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:52,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138045192] [2022-07-12 10:21:52,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138045192] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:52,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118421649] [2022-07-12 10:21:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:52,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:21:52,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:21:52,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:21:52,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:21:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:53,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 10:21:53,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:21:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:21:53,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:21:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:21:53,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118421649] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:21:53,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:21:53,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 23 [2022-07-12 10:21:53,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869733972] [2022-07-12 10:21:53,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:53,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:21:53,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:53,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:21:53,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:21:53,665 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-12 10:21:53,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 371 transitions, 1213 flow. Second operand has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:53,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:53,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-12 10:21:53,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:21:59,218 INFO L129 PetriNetUnfolder]: 4966/37610 cut-off events. [2022-07-12 10:21:59,218 INFO L130 PetriNetUnfolder]: For 8388/8777 co-relation queries the response was YES. [2022-07-12 10:21:59,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52909 conditions, 37610 events. 4966/37610 cut-off events. For 8388/8777 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 560715 event pairs, 2134 based on Foata normal form. 65/34593 useless extension candidates. Maximal degree in co-relation 52878. Up to 2270 conditions per place. [2022-07-12 10:21:59,618 INFO L132 encePairwiseOnDemand]: 333/350 looper letters, 180 selfloop transitions, 40 changer transitions 2/486 dead transitions. [2022-07-12 10:21:59,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 486 transitions, 2107 flow [2022-07-12 10:21:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:21:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:21:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5246 transitions. [2022-07-12 10:21:59,623 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7888721804511278 [2022-07-12 10:21:59,623 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5246 transitions. [2022-07-12 10:21:59,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5246 transitions. [2022-07-12 10:21:59,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:21:59,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5246 transitions. [2022-07-12 10:21:59,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 276.10526315789474) internal successors, (5246), 19 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:59,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:59,647 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:59,647 INFO L186 Difference]: Start difference. First operand has 399 places, 371 transitions, 1213 flow. Second operand 19 states and 5246 transitions. [2022-07-12 10:21:59,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 486 transitions, 2107 flow [2022-07-12 10:21:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 486 transitions, 2064 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-07-12 10:21:59,672 INFO L242 Difference]: Finished difference. Result has 414 places, 383 transitions, 1347 flow [2022-07-12 10:21:59,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1347, PETRI_PLACES=414, PETRI_TRANSITIONS=383} [2022-07-12 10:21:59,673 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 96 predicate places. [2022-07-12 10:21:59,673 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 383 transitions, 1347 flow [2022-07-12 10:21:59,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:59,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:21:59,674 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:21:59,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:21:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:21:59,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:21:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:21:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash 883261830, now seen corresponding path program 1 times [2022-07-12 10:21:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:21:59,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891096820] [2022-07-12 10:21:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:21:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:21:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:21:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:21:59,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:21:59,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891096820] [2022-07-12 10:21:59,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891096820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:21:59,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:21:59,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:21:59,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025618016] [2022-07-12 10:21:59,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:21:59,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:21:59,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:21:59,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:21:59,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:21:59,965 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 350 [2022-07-12 10:21:59,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 383 transitions, 1347 flow. Second operand has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:21:59,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:21:59,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 350 [2022-07-12 10:21:59,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:22:01,524 INFO L129 PetriNetUnfolder]: 743/9168 cut-off events. [2022-07-12 10:22:01,524 INFO L130 PetriNetUnfolder]: For 2522/3267 co-relation queries the response was YES. [2022-07-12 10:22:01,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12941 conditions, 9168 events. 743/9168 cut-off events. For 2522/3267 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 105510 event pairs, 432 based on Foata normal form. 33/8545 useless extension candidates. Maximal degree in co-relation 12906. Up to 1109 conditions per place. [2022-07-12 10:22:01,610 INFO L132 encePairwiseOnDemand]: 339/350 looper letters, 75 selfloop transitions, 8 changer transitions 57/409 dead transitions. [2022-07-12 10:22:01,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 409 transitions, 1710 flow [2022-07-12 10:22:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:22:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:22:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2834 transitions. [2022-07-12 10:22:01,613 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8097142857142857 [2022-07-12 10:22:01,613 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2834 transitions. [2022-07-12 10:22:01,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2834 transitions. [2022-07-12 10:22:01,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:22:01,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2834 transitions. [2022-07-12 10:22:01,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 283.4) internal successors, (2834), 10 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:01,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:01,620 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:01,620 INFO L186 Difference]: Start difference. First operand has 414 places, 383 transitions, 1347 flow. Second operand 10 states and 2834 transitions. [2022-07-12 10:22:01,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 409 transitions, 1710 flow [2022-07-12 10:22:01,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 409 transitions, 1650 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-07-12 10:22:01,630 INFO L242 Difference]: Finished difference. Result has 411 places, 350 transitions, 1104 flow [2022-07-12 10:22:01,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1104, PETRI_PLACES=411, PETRI_TRANSITIONS=350} [2022-07-12 10:22:01,631 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 93 predicate places. [2022-07-12 10:22:01,631 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 350 transitions, 1104 flow [2022-07-12 10:22:01,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:01,632 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:22:01,632 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:22:01,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:22:01,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:22:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:22:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2016968799, now seen corresponding path program 1 times [2022-07-12 10:22:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:22:01,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37505394] [2022-07-12 10:22:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:22:01,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:22:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:22:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:22:01,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:22:01,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37505394] [2022-07-12 10:22:01,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37505394] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:22:01,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755582780] [2022-07-12 10:22:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:22:01,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:22:01,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:22:01,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:22:01,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:22:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:22:01,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 10:22:01,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:22:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:22:02,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:22:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:22:02,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755582780] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:22:02,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:22:02,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 31 [2022-07-12 10:22:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582931792] [2022-07-12 10:22:02,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:22:02,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 10:22:02,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:22:02,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 10:22:02,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-07-12 10:22:02,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 350 [2022-07-12 10:22:02,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 350 transitions, 1104 flow. Second operand has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:02,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:22:02,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 350 [2022-07-12 10:22:02,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:22:08,134 INFO L129 PetriNetUnfolder]: 2980/30212 cut-off events. [2022-07-12 10:22:08,134 INFO L130 PetriNetUnfolder]: For 7714/7839 co-relation queries the response was YES. [2022-07-12 10:22:08,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41914 conditions, 30212 events. 2980/30212 cut-off events. For 7714/7839 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 438851 event pairs, 1802 based on Foata normal form. 93/28069 useless extension candidates. Maximal degree in co-relation 41878. Up to 1818 conditions per place. [2022-07-12 10:22:08,543 INFO L132 encePairwiseOnDemand]: 317/350 looper letters, 281 selfloop transitions, 69 changer transitions 19/609 dead transitions. [2022-07-12 10:22:08,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 609 transitions, 2999 flow [2022-07-12 10:22:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-12 10:22:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-12 10:22:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 12846 transitions. [2022-07-12 10:22:08,574 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7058241758241758 [2022-07-12 10:22:08,575 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 12846 transitions. [2022-07-12 10:22:08,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 12846 transitions. [2022-07-12 10:22:08,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:22:08,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 12846 transitions. [2022-07-12 10:22:08,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 247.03846153846155) internal successors, (12846), 52 states have internal predecessors, (12846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:08,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 350.0) internal successors, (18550), 53 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:08,607 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 350.0) internal successors, (18550), 53 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:08,607 INFO L186 Difference]: Start difference. First operand has 411 places, 350 transitions, 1104 flow. Second operand 52 states and 12846 transitions. [2022-07-12 10:22:08,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 609 transitions, 2999 flow [2022-07-12 10:22:08,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 609 transitions, 2790 flow, removed 15 selfloop flow, removed 30 redundant places. [2022-07-12 10:22:08,632 INFO L242 Difference]: Finished difference. Result has 441 places, 398 transitions, 1500 flow [2022-07-12 10:22:08,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1500, PETRI_PLACES=441, PETRI_TRANSITIONS=398} [2022-07-12 10:22:08,633 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 123 predicate places. [2022-07-12 10:22:08,633 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 398 transitions, 1500 flow [2022-07-12 10:22:08,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:08,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:22:08,635 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:22:08,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:22:08,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 10:22:08,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:22:08,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:22:08,852 INFO L85 PathProgramCache]: Analyzing trace with hash 621379751, now seen corresponding path program 2 times [2022-07-12 10:22:08,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:22:08,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393359657] [2022-07-12 10:22:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:22:08,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:22:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:22:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:22:09,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:22:09,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393359657] [2022-07-12 10:22:09,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393359657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:22:09,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199740520] [2022-07-12 10:22:09,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:22:09,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:22:09,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:22:09,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:22:09,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:22:09,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:22:09,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:22:09,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:22:09,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:22:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 10:22:09,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:22:09,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199740520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:22:09,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:22:09,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 20 [2022-07-12 10:22:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696071731] [2022-07-12 10:22:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:22:09,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:22:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:22:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:22:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:22:09,383 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-07-12 10:22:09,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 398 transitions, 1500 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:09,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:22:09,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-07-12 10:22:09,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:22:16,716 INFO L129 PetriNetUnfolder]: 6378/46375 cut-off events. [2022-07-12 10:22:16,717 INFO L130 PetriNetUnfolder]: For 16564/17006 co-relation queries the response was YES. [2022-07-12 10:22:17,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70276 conditions, 46375 events. 6378/46375 cut-off events. For 16564/17006 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 703751 event pairs, 1508 based on Foata normal form. 243/42641 useless extension candidates. Maximal degree in co-relation 70229. Up to 3955 conditions per place. [2022-07-12 10:22:17,621 INFO L132 encePairwiseOnDemand]: 341/350 looper letters, 144 selfloop transitions, 32 changer transitions 4/490 dead transitions. [2022-07-12 10:22:17,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 490 transitions, 2352 flow [2022-07-12 10:22:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:22:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:22:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-07-12 10:22:17,626 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8012244897959183 [2022-07-12 10:22:17,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-07-12 10:22:17,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-07-12 10:22:17,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:22:17,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-07-12 10:22:17,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:17,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:17,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:17,657 INFO L186 Difference]: Start difference. First operand has 441 places, 398 transitions, 1500 flow. Second operand 7 states and 1963 transitions. [2022-07-12 10:22:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 490 transitions, 2352 flow [2022-07-12 10:22:17,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 490 transitions, 2279 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-07-12 10:22:17,711 INFO L242 Difference]: Finished difference. Result has 436 places, 422 transitions, 1744 flow [2022-07-12 10:22:17,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1744, PETRI_PLACES=436, PETRI_TRANSITIONS=422} [2022-07-12 10:22:17,712 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 118 predicate places. [2022-07-12 10:22:17,713 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 422 transitions, 1744 flow [2022-07-12 10:22:17,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:17,713 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:22:17,725 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:22:17,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:22:17,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:22:17,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:22:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:22:17,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1872062923, now seen corresponding path program 3 times [2022-07-12 10:22:17,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:22:17,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944384330] [2022-07-12 10:22:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:22:17,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:22:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:22:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:22:18,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:22:18,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944384330] [2022-07-12 10:22:18,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944384330] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:22:18,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245827581] [2022-07-12 10:22:18,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:22:18,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:22:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:22:18,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:22:18,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:22:18,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-12 10:22:18,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:22:18,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:22:18,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:22:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 10:22:18,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:22:18,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245827581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:22:18,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:22:18,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 20 [2022-07-12 10:22:18,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538854253] [2022-07-12 10:22:18,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:22:18,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:22:18,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:22:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:22:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:22:18,426 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-07-12 10:22:18,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 422 transitions, 1744 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:22:18,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:22:18,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-07-12 10:22:18,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand