./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:40:20,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:40:20,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:40:20,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:40:20,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:40:20,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:40:20,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:40:20,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:40:20,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:40:20,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:40:20,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:40:20,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:40:20,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:40:20,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:40:20,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:40:20,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:40:20,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:40:20,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:40:20,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:40:20,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:40:20,433 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:40:20,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:40:20,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:40:20,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:40:20,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:40:20,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:40:20,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:40:20,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:40:20,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:40:20,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:40:20,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:40:20,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:40:20,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:40:20,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:40:20,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:40:20,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:40:20,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:40:20,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:40:20,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:40:20,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:40:20,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:40:20,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:40:20,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:40:20,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:40:20,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:40:20,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:40:20,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:40:20,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:40:20,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:40:20,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:40:20,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:40:20,483 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:40:20,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:40:20,484 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:40:20,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:40:20,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:40:20,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:40:20,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:40:20,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:40:20,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:40:20,485 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:40:20,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:40:20,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:40:20,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:40:20,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:40:20,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:40:20,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:40:20,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:40:20,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:40:20,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:40:20,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:40:20,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:40:20,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:40:20,489 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:40:20,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:40:20,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:40:20,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-07-22 21:40:20,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:40:20,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:40:20,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:40:20,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:40:20,763 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:40:20,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-07-22 21:40:20,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89231873/507e506716d94b2ea4f05836514682f6/FLAGf1465d5a4 [2022-07-22 21:40:21,236 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:40:21,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-07-22 21:40:21,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89231873/507e506716d94b2ea4f05836514682f6/FLAGf1465d5a4 [2022-07-22 21:40:21,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89231873/507e506716d94b2ea4f05836514682f6 [2022-07-22 21:40:21,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:40:21,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:40:21,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:40:21,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:40:21,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:40:21,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:21,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c79b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21, skipping insertion in model container [2022-07-22 21:40:21,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:21,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:40:21,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:40:21,858 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-chromosome-trans.wvr.c[3034,3047] [2022-07-22 21:40:21,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:40:21,881 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:40:21,919 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-chromosome-trans.wvr.c[3034,3047] [2022-07-22 21:40:21,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:40:21,940 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:40:21,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21 WrapperNode [2022-07-22 21:40:21,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:40:21,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:40:21,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:40:21,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:40:21,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:21,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:21,995 INFO L137 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 283 [2022-07-22 21:40:21,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:40:21,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:40:21,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:40:21,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:40:22,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:40:22,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:40:22,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:40:22,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:40:22,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (1/1) ... [2022-07-22 21:40:22,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:40:22,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:22,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:40:22,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:40:22,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:40:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:40:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:40:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:40:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:40:22,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:40:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:40:22,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:40:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:40:22,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:40:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:40:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:40:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:40:22,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:40:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:40:22,097 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:40:22,177 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:40:22,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:40:22,742 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:40:22,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:40:22,758 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 21:40:22,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:40:22 BoogieIcfgContainer [2022-07-22 21:40:22,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:40:22,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:40:22,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:40:22,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:40:22,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:40:21" (1/3) ... [2022-07-22 21:40:22,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101261de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:40:22, skipping insertion in model container [2022-07-22 21:40:22,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:21" (2/3) ... [2022-07-22 21:40:22,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101261de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:40:22, skipping insertion in model container [2022-07-22 21:40:22,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:40:22" (3/3) ... [2022-07-22 21:40:22,769 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-07-22 21:40:22,774 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:40:22,782 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:40:22,783 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:40:22,783 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:40:22,877 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:40:22,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 350 places, 371 transitions, 766 flow [2022-07-22 21:40:23,114 INFO L129 PetriNetUnfolder]: 31/368 cut-off events. [2022-07-22 21:40:23,114 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:40:23,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 368 events. 31/368 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 624 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 282. Up to 2 conditions per place. [2022-07-22 21:40:23,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 371 transitions, 766 flow [2022-07-22 21:40:23,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 357 transitions, 732 flow [2022-07-22 21:40:23,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:40:23,160 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@5c8a46e7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7aed7b20 [2022-07-22 21:40:23,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:40:23,231 INFO L129 PetriNetUnfolder]: 31/356 cut-off events. [2022-07-22 21:40:23,232 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:40:23,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:23,233 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] [2022-07-22 21:40:23,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:23,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1263257970, now seen corresponding path program 1 times [2022-07-22 21:40:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:23,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546433391] [2022-07-22 21:40:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:23,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:23,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546433391] [2022-07-22 21:40:23,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546433391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:23,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:23,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:40:23,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563890609] [2022-07-22 21:40:23,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:23,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:40:23,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:40:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:40:23,549 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 371 [2022-07-22 21:40:23,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 357 transitions, 732 flow. Second operand has 2 states, 2 states have (on average 346.5) internal successors, (693), 2 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:23,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:23,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 371 [2022-07-22 21:40:23,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:23,626 INFO L129 PetriNetUnfolder]: 9/335 cut-off events. [2022-07-22 21:40:23,626 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-22 21:40:23,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 335 events. 9/335 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 612 event pairs, 0 based on Foata normal form. 35/345 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2022-07-22 21:40:23,631 INFO L132 encePairwiseOnDemand]: 349/371 looper letters, 6 selfloop transitions, 0 changer transitions 7/335 dead transitions. [2022-07-22 21:40:23,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 335 transitions, 700 flow [2022-07-22 21:40:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:40:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:40:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 712 transitions. [2022-07-22 21:40:23,645 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9595687331536388 [2022-07-22 21:40:23,646 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 712 transitions. [2022-07-22 21:40:23,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 712 transitions. [2022-07-22 21:40:23,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:23,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 712 transitions. [2022-07-22 21:40:23,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:23,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:23,668 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:23,669 INFO L186 Difference]: Start difference. First operand has 336 places, 357 transitions, 732 flow. Second operand 2 states and 712 transitions. [2022-07-22 21:40:23,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 335 transitions, 700 flow [2022-07-22 21:40:23,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 335 transitions, 688 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:40:23,684 INFO L242 Difference]: Finished difference. Result has 331 places, 328 transitions, 662 flow [2022-07-22 21:40:23,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=662, PETRI_PLACES=331, PETRI_TRANSITIONS=328} [2022-07-22 21:40:23,691 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-07-22 21:40:23,691 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 328 transitions, 662 flow [2022-07-22 21:40:23,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 346.5) internal successors, (693), 2 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:23,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:23,693 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] [2022-07-22 21:40:23,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:40:23,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1315339283, now seen corresponding path program 1 times [2022-07-22 21:40:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:23,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48836879] [2022-07-22 21:40:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:23,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:23,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48836879] [2022-07-22 21:40:23,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48836879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:23,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:23,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308298723] [2022-07-22 21:40:23,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:23,936 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-07-22 21:40:23,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 328 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:23,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:23,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-07-22 21:40:23,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:24,193 INFO L129 PetriNetUnfolder]: 54/849 cut-off events. [2022-07-22 21:40:24,194 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2022-07-22 21:40:24,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 849 events. 54/849 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4151 event pairs, 18 based on Foata normal form. 1/791 useless extension candidates. Maximal degree in co-relation 973. Up to 55 conditions per place. [2022-07-22 21:40:24,209 INFO L132 encePairwiseOnDemand]: 366/371 looper letters, 31 selfloop transitions, 4 changer transitions 0/346 dead transitions. [2022-07-22 21:40:24,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 346 transitions, 778 flow [2022-07-22 21:40:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1691 transitions. [2022-07-22 21:40:24,215 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9115902964959569 [2022-07-22 21:40:24,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1691 transitions. [2022-07-22 21:40:24,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1691 transitions. [2022-07-22 21:40:24,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:24,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1691 transitions. [2022-07-22 21:40:24,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,228 INFO L186 Difference]: Start difference. First operand has 331 places, 328 transitions, 662 flow. Second operand 5 states and 1691 transitions. [2022-07-22 21:40:24,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 346 transitions, 778 flow [2022-07-22 21:40:24,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 346 transitions, 778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:24,240 INFO L242 Difference]: Finished difference. Result has 331 places, 331 transitions, 691 flow [2022-07-22 21:40:24,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=331, PETRI_TRANSITIONS=331} [2022-07-22 21:40:24,242 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-07-22 21:40:24,242 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 331 transitions, 691 flow [2022-07-22 21:40:24,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:24,244 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] [2022-07-22 21:40:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:40:24,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1925711219, now seen corresponding path program 1 times [2022-07-22 21:40:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:24,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679800537] [2022-07-22 21:40:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:24,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:24,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:24,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679800537] [2022-07-22 21:40:24,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679800537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:24,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:24,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:40:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004890600] [2022-07-22 21:40:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:24,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:40:24,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:40:24,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:40:24,421 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 371 [2022-07-22 21:40:24,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 331 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:24,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 371 [2022-07-22 21:40:24,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:24,601 INFO L129 PetriNetUnfolder]: 8/415 cut-off events. [2022-07-22 21:40:24,602 INFO L130 PetriNetUnfolder]: For 9/15 co-relation queries the response was YES. [2022-07-22 21:40:24,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 415 events. 8/415 cut-off events. For 9/15 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 832 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 488. Up to 42 conditions per place. [2022-07-22 21:40:24,607 INFO L132 encePairwiseOnDemand]: 356/371 looper letters, 42 selfloop transitions, 12 changer transitions 0/343 dead transitions. [2022-07-22 21:40:24,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 343 transitions, 823 flow [2022-07-22 21:40:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1587 transitions. [2022-07-22 21:40:24,611 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8555256064690027 [2022-07-22 21:40:24,611 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1587 transitions. [2022-07-22 21:40:24,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1587 transitions. [2022-07-22 21:40:24,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:24,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1587 transitions. [2022-07-22 21:40:24,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.4) internal successors, (1587), 5 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,620 INFO L186 Difference]: Start difference. First operand has 331 places, 331 transitions, 691 flow. Second operand 5 states and 1587 transitions. [2022-07-22 21:40:24,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 343 transitions, 823 flow [2022-07-22 21:40:24,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 343 transitions, 823 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:24,626 INFO L242 Difference]: Finished difference. Result has 336 places, 334 transitions, 739 flow [2022-07-22 21:40:24,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=739, PETRI_PLACES=336, PETRI_TRANSITIONS=334} [2022-07-22 21:40:24,627 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 0 predicate places. [2022-07-22 21:40:24,627 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 334 transitions, 739 flow [2022-07-22 21:40:24,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:24,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:24,629 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, 1, 1, 1] [2022-07-22 21:40:24,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:40:24,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:24,630 INFO L85 PathProgramCache]: Analyzing trace with hash -306219218, now seen corresponding path program 1 times [2022-07-22 21:40:24,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:24,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398924201] [2022-07-22 21:40:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:24,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:40:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398924201] [2022-07-22 21:40:24,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398924201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:24,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571777647] [2022-07-22 21:40:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:24,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:24,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:24,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:24,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:40:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:24,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:40:24,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:40:25,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:40:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:40:25,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571777647] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:40:25,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:40:25,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-22 21:40:25,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793865954] [2022-07-22 21:40:25,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:40:25,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:40:25,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:25,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:40:25,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:40:25,204 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-07-22 21:40:25,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 334 transitions, 739 flow. Second operand has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:25,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:25,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-07-22 21:40:25,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:25,590 INFO L129 PetriNetUnfolder]: 8/442 cut-off events. [2022-07-22 21:40:25,590 INFO L130 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-07-22 21:40:25,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 442 events. 8/442 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 805 event pairs, 0 based on Foata normal form. 6/433 useless extension candidates. Maximal degree in co-relation 563. Up to 33 conditions per place. [2022-07-22 21:40:25,596 INFO L132 encePairwiseOnDemand]: 347/371 looper letters, 45 selfloop transitions, 33 changer transitions 0/364 dead transitions. [2022-07-22 21:40:25,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 364 transitions, 961 flow [2022-07-22 21:40:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:40:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:40:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3417 transitions. [2022-07-22 21:40:25,603 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8372947806910072 [2022-07-22 21:40:25,604 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3417 transitions. [2022-07-22 21:40:25,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3417 transitions. [2022-07-22 21:40:25,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:25,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3417 transitions. [2022-07-22 21:40:25,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.6363636363636) internal successors, (3417), 11 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:25,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:25,622 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:25,622 INFO L186 Difference]: Start difference. First operand has 336 places, 334 transitions, 739 flow. Second operand 11 states and 3417 transitions. [2022-07-22 21:40:25,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 364 transitions, 961 flow [2022-07-22 21:40:25,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 364 transitions, 943 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:40:25,629 INFO L242 Difference]: Finished difference. Result has 346 places, 352 transitions, 888 flow [2022-07-22 21:40:25,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=888, PETRI_PLACES=346, PETRI_TRANSITIONS=352} [2022-07-22 21:40:25,631 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 10 predicate places. [2022-07-22 21:40:25,631 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 352 transitions, 888 flow [2022-07-22 21:40:25,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:25,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:25,633 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:25,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:25,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 592966378, now seen corresponding path program 2 times [2022-07-22 21:40:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:25,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601732035] [2022-07-22 21:40:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:25,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 21:40:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601732035] [2022-07-22 21:40:26,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601732035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770867697] [2022-07-22 21:40:26,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:40:26,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:26,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:26,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:26,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:40:26,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 21:40:26,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:40:26,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:40:26,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 21:40:26,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:40:26,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770867697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:26,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:40:26,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-22 21:40:26,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998027728] [2022-07-22 21:40:26,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:26,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:40:26,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:40:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:40:26,298 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 371 [2022-07-22 21:40:26,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 352 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:26,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:26,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 371 [2022-07-22 21:40:26,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:26,535 INFO L129 PetriNetUnfolder]: 61/762 cut-off events. [2022-07-22 21:40:26,535 INFO L130 PetriNetUnfolder]: For 68/130 co-relation queries the response was YES. [2022-07-22 21:40:26,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 762 events. 61/762 cut-off events. For 68/130 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3452 event pairs, 20 based on Foata normal form. 3/712 useless extension candidates. Maximal degree in co-relation 1024. Up to 108 conditions per place. [2022-07-22 21:40:26,567 INFO L132 encePairwiseOnDemand]: 363/371 looper letters, 46 selfloop transitions, 5 changer transitions 5/366 dead transitions. [2022-07-22 21:40:26,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 366 transitions, 1033 flow [2022-07-22 21:40:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:40:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:40:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1851 transitions. [2022-07-22 21:40:26,571 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8315363881401617 [2022-07-22 21:40:26,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1851 transitions. [2022-07-22 21:40:26,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1851 transitions. [2022-07-22 21:40:26,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:26,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1851 transitions. [2022-07-22 21:40:26,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 308.5) internal successors, (1851), 6 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:26,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:26,582 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:26,582 INFO L186 Difference]: Start difference. First operand has 346 places, 352 transitions, 888 flow. Second operand 6 states and 1851 transitions. [2022-07-22 21:40:26,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 366 transitions, 1033 flow [2022-07-22 21:40:26,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 366 transitions, 1008 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-22 21:40:26,593 INFO L242 Difference]: Finished difference. Result has 352 places, 356 transitions, 902 flow [2022-07-22 21:40:26,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=352, PETRI_TRANSITIONS=356} [2022-07-22 21:40:26,594 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 16 predicate places. [2022-07-22 21:40:26,595 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 356 transitions, 902 flow [2022-07-22 21:40:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:26,596 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:26,596 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:26,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:26,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:26,816 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1902012858, now seen corresponding path program 1 times [2022-07-22 21:40:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:26,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288347088] [2022-07-22 21:40:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:26,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 21:40:26,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:26,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288347088] [2022-07-22 21:40:26,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288347088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:26,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:26,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946881506] [2022-07-22 21:40:26,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:26,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:26,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:26,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-07-22 21:40:26,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 356 transitions, 902 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:26,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:26,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-07-22 21:40:26,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:27,165 INFO L129 PetriNetUnfolder]: 83/987 cut-off events. [2022-07-22 21:40:27,165 INFO L130 PetriNetUnfolder]: For 105/179 co-relation queries the response was YES. [2022-07-22 21:40:27,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 987 events. 83/987 cut-off events. For 105/179 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5515 event pairs, 36 based on Foata normal form. 0/907 useless extension candidates. Maximal degree in co-relation 1340. Up to 97 conditions per place. [2022-07-22 21:40:27,176 INFO L132 encePairwiseOnDemand]: 366/371 looper letters, 27 selfloop transitions, 4 changer transitions 2/371 dead transitions. [2022-07-22 21:40:27,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 371 transitions, 1003 flow [2022-07-22 21:40:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2022-07-22 21:40:27,182 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9105121293800539 [2022-07-22 21:40:27,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2022-07-22 21:40:27,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2022-07-22 21:40:27,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:27,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2022-07-22 21:40:27,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:27,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:27,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:27,190 INFO L186 Difference]: Start difference. First operand has 352 places, 356 transitions, 902 flow. Second operand 5 states and 1689 transitions. [2022-07-22 21:40:27,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 371 transitions, 1003 flow [2022-07-22 21:40:27,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 371 transitions, 995 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-22 21:40:27,201 INFO L242 Difference]: Finished difference. Result has 354 places, 358 transitions, 918 flow [2022-07-22 21:40:27,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=918, PETRI_PLACES=354, PETRI_TRANSITIONS=358} [2022-07-22 21:40:27,204 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 18 predicate places. [2022-07-22 21:40:27,205 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 358 transitions, 918 flow [2022-07-22 21:40:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:27,206 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:27,206 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:40:27,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:27,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1790994917, now seen corresponding path program 1 times [2022-07-22 21:40:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:27,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486226097] [2022-07-22 21:40:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 21:40:27,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:27,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486226097] [2022-07-22 21:40:27,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486226097] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850543874] [2022-07-22 21:40:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:27,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:27,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:27,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:27,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:40:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:27,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 21:40:27,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 21:40:27,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:40:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 21:40:27,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850543874] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:40:27,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:40:27,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-22 21:40:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810955492] [2022-07-22 21:40:27,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:40:27,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:40:27,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:40:27,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:40:27,802 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-07-22 21:40:27,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 358 transitions, 918 flow. Second operand has 22 states, 22 states have (on average 306.8636363636364) internal successors, (6751), 22 states have internal predecessors, (6751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:27,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:27,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-07-22 21:40:27,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:28,265 INFO L129 PetriNetUnfolder]: 7/565 cut-off events. [2022-07-22 21:40:28,265 INFO L130 PetriNetUnfolder]: For 72/82 co-relation queries the response was YES. [2022-07-22 21:40:28,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 565 events. 7/565 cut-off events. For 72/82 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1232 event pairs, 0 based on Foata normal form. 6/552 useless extension candidates. Maximal degree in co-relation 833. Up to 39 conditions per place. [2022-07-22 21:40:28,273 INFO L132 encePairwiseOnDemand]: 347/371 looper letters, 57 selfloop transitions, 51 changer transitions 0/400 dead transitions. [2022-07-22 21:40:28,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 400 transitions, 1302 flow [2022-07-22 21:40:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:40:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:40:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5265 transitions. [2022-07-22 21:40:28,284 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8347867448866338 [2022-07-22 21:40:28,285 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5265 transitions. [2022-07-22 21:40:28,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5265 transitions. [2022-07-22 21:40:28,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:28,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5265 transitions. [2022-07-22 21:40:28,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 309.70588235294116) internal successors, (5265), 17 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:28,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 371.0) internal successors, (6678), 18 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:28,315 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 371.0) internal successors, (6678), 18 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:28,316 INFO L186 Difference]: Start difference. First operand has 354 places, 358 transitions, 918 flow. Second operand 17 states and 5265 transitions. [2022-07-22 21:40:28,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 400 transitions, 1302 flow [2022-07-22 21:40:28,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 400 transitions, 1302 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:28,325 INFO L242 Difference]: Finished difference. Result has 373 places, 379 transitions, 1181 flow [2022-07-22 21:40:28,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1181, PETRI_PLACES=373, PETRI_TRANSITIONS=379} [2022-07-22 21:40:28,326 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 37 predicate places. [2022-07-22 21:40:28,326 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 379 transitions, 1181 flow [2022-07-22 21:40:28,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 306.8636363636364) internal successors, (6751), 22 states have internal predecessors, (6751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:28,328 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:28,328 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:28,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:28,554 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 [2022-07-22 21:40:28,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash 824957187, now seen corresponding path program 1 times [2022-07-22 21:40:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571854524] [2022-07-22 21:40:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:28,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571854524] [2022-07-22 21:40:28,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571854524] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:28,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343340943] [2022-07-22 21:40:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:28,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:28,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:28,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:28,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:40:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:28,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:40:28,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:28,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:40:28,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343340943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:28,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:40:28,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-22 21:40:28,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324434982] [2022-07-22 21:40:28,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:28,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:40:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:40:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:28,971 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-22 21:40:28,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 379 transitions, 1181 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:28,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:28,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-22 21:40:28,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:29,749 INFO L129 PetriNetUnfolder]: 375/2866 cut-off events. [2022-07-22 21:40:29,750 INFO L130 PetriNetUnfolder]: For 606/675 co-relation queries the response was YES. [2022-07-22 21:40:29,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 2866 events. 375/2866 cut-off events. For 606/675 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22286 event pairs, 176 based on Foata normal form. 70/2800 useless extension candidates. Maximal degree in co-relation 4338. Up to 337 conditions per place. [2022-07-22 21:40:29,842 INFO L132 encePairwiseOnDemand]: 365/371 looper letters, 54 selfloop transitions, 13 changer transitions 0/422 dead transitions. [2022-07-22 21:40:29,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 422 transitions, 1459 flow [2022-07-22 21:40:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:40:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:40:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2358 transitions. [2022-07-22 21:40:29,848 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9079707354639969 [2022-07-22 21:40:29,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2358 transitions. [2022-07-22 21:40:29,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2358 transitions. [2022-07-22 21:40:29,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:29,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2358 transitions. [2022-07-22 21:40:29,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 336.85714285714283) internal successors, (2358), 7 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:29,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:29,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:29,858 INFO L186 Difference]: Start difference. First operand has 373 places, 379 transitions, 1181 flow. Second operand 7 states and 2358 transitions. [2022-07-22 21:40:29,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 422 transitions, 1459 flow [2022-07-22 21:40:29,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 422 transitions, 1392 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-22 21:40:29,870 INFO L242 Difference]: Finished difference. Result has 375 places, 389 transitions, 1202 flow [2022-07-22 21:40:29,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1202, PETRI_PLACES=375, PETRI_TRANSITIONS=389} [2022-07-22 21:40:29,873 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 39 predicate places. [2022-07-22 21:40:29,873 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 389 transitions, 1202 flow [2022-07-22 21:40:29,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:29,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:29,875 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:29,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:30,100 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 [2022-07-22 21:40:30,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2039385131, now seen corresponding path program 2 times [2022-07-22 21:40:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37823207] [2022-07-22 21:40:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:30,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37823207] [2022-07-22 21:40:30,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37823207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:30,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433767876] [2022-07-22 21:40:30,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:40:30,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:30,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:30,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:30,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:40:30,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:40:30,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:40:30,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:40:30,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:30,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:40:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:30,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433767876] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:40:30,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:40:30,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2022-07-22 21:40:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703462000] [2022-07-22 21:40:30,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:40:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:40:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:40:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:40:30,820 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-07-22 21:40:30,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 389 transitions, 1202 flow. Second operand has 7 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:30,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:30,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-07-22 21:40:30,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:32,320 INFO L129 PetriNetUnfolder]: 794/5731 cut-off events. [2022-07-22 21:40:32,320 INFO L130 PetriNetUnfolder]: For 1597/1629 co-relation queries the response was YES. [2022-07-22 21:40:32,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8995 conditions, 5731 events. 794/5731 cut-off events. For 1597/1629 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 56105 event pairs, 25 based on Foata normal form. 27/5531 useless extension candidates. Maximal degree in co-relation 8972. Up to 389 conditions per place. [2022-07-22 21:40:32,434 INFO L132 encePairwiseOnDemand]: 360/371 looper letters, 101 selfloop transitions, 36 changer transitions 2/488 dead transitions. [2022-07-22 21:40:32,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 488 transitions, 1889 flow [2022-07-22 21:40:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:40:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:40:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3663 transitions. [2022-07-22 21:40:32,443 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8975741239892183 [2022-07-22 21:40:32,443 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3663 transitions. [2022-07-22 21:40:32,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3663 transitions. [2022-07-22 21:40:32,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:32,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3663 transitions. [2022-07-22 21:40:32,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:32,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:32,460 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:32,460 INFO L186 Difference]: Start difference. First operand has 375 places, 389 transitions, 1202 flow. Second operand 11 states and 3663 transitions. [2022-07-22 21:40:32,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 488 transitions, 1889 flow [2022-07-22 21:40:32,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 488 transitions, 1889 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:32,482 INFO L242 Difference]: Finished difference. Result has 393 places, 418 transitions, 1481 flow [2022-07-22 21:40:32,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1481, PETRI_PLACES=393, PETRI_TRANSITIONS=418} [2022-07-22 21:40:32,484 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 57 predicate places. [2022-07-22 21:40:32,484 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 418 transitions, 1481 flow [2022-07-22 21:40:32,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:32,485 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:32,486 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:32,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:32,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:32,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 764566735, now seen corresponding path program 2 times [2022-07-22 21:40:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:32,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867005212] [2022-07-22 21:40:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:32,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:32,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867005212] [2022-07-22 21:40:32,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867005212] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:32,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275183669] [2022-07-22 21:40:32,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:40:32,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:32,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:32,797 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:32,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 21:40:32,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 21:40:32,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:40:32,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:40:32,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 21:40:33,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:40:33,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275183669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:33,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:40:33,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-22 21:40:33,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308894544] [2022-07-22 21:40:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:33,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:40:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:40:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:40:33,102 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-22 21:40:33,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 418 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:33,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:33,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-22 21:40:33,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:35,853 INFO L129 PetriNetUnfolder]: 1178/10426 cut-off events. [2022-07-22 21:40:35,853 INFO L130 PetriNetUnfolder]: For 3021/3162 co-relation queries the response was YES. [2022-07-22 21:40:35,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16343 conditions, 10426 events. 1178/10426 cut-off events. For 3021/3162 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 115816 event pairs, 26 based on Foata normal form. 83/9843 useless extension candidates. Maximal degree in co-relation 16311. Up to 613 conditions per place. [2022-07-22 21:40:35,982 INFO L132 encePairwiseOnDemand]: 359/371 looper letters, 83 selfloop transitions, 33 changer transitions 0/505 dead transitions. [2022-07-22 21:40:35,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 505 transitions, 1916 flow [2022-07-22 21:40:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:40:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:40:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4266 transitions. [2022-07-22 21:40:35,993 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8845117147003939 [2022-07-22 21:40:35,994 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4266 transitions. [2022-07-22 21:40:35,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4266 transitions. [2022-07-22 21:40:35,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:35,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4266 transitions. [2022-07-22 21:40:36,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 328.15384615384613) internal successors, (4266), 13 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:36,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:36,016 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:36,016 INFO L186 Difference]: Start difference. First operand has 393 places, 418 transitions, 1481 flow. Second operand 13 states and 4266 transitions. [2022-07-22 21:40:36,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 505 transitions, 1916 flow [2022-07-22 21:40:36,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 505 transitions, 1908 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:36,061 INFO L242 Difference]: Finished difference. Result has 411 places, 449 transitions, 1669 flow [2022-07-22 21:40:36,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1669, PETRI_PLACES=411, PETRI_TRANSITIONS=449} [2022-07-22 21:40:36,064 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 75 predicate places. [2022-07-22 21:40:36,064 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 449 transitions, 1669 flow [2022-07-22 21:40:36,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:36,065 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:36,066 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:36,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:36,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:36,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:36,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1811624977, now seen corresponding path program 3 times [2022-07-22 21:40:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:36,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575884268] [2022-07-22 21:40:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:36,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:36,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:36,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575884268] [2022-07-22 21:40:36,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575884268] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:36,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427767951] [2022-07-22 21:40:36,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:40:36,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:36,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:36,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:36,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 21:40:36,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-22 21:40:36,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:40:36,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:40:36,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 21:40:36,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:40:36,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427767951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:36,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:40:36,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-22 21:40:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483597953] [2022-07-22 21:40:36,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:36,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:40:36,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:40:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:40:36,672 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-22 21:40:36,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 449 transitions, 1669 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:36,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:36,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-22 21:40:36,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:39,945 INFO L129 PetriNetUnfolder]: 1659/13514 cut-off events. [2022-07-22 21:40:39,946 INFO L130 PetriNetUnfolder]: For 5199/5716 co-relation queries the response was YES. [2022-07-22 21:40:40,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21894 conditions, 13514 events. 1659/13514 cut-off events. For 5199/5716 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 154468 event pairs, 464 based on Foata normal form. 119/12974 useless extension candidates. Maximal degree in co-relation 21855. Up to 883 conditions per place. [2022-07-22 21:40:40,161 INFO L132 encePairwiseOnDemand]: 362/371 looper letters, 135 selfloop transitions, 27 changer transitions 0/551 dead transitions. [2022-07-22 21:40:40,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 551 transitions, 2402 flow [2022-07-22 21:40:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:40:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:40:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2970 transitions. [2022-07-22 21:40:40,168 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.889487870619946 [2022-07-22 21:40:40,168 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2970 transitions. [2022-07-22 21:40:40,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2970 transitions. [2022-07-22 21:40:40,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:40,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2970 transitions. [2022-07-22 21:40:40,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 330.0) internal successors, (2970), 9 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:40,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:40,184 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:40,184 INFO L186 Difference]: Start difference. First operand has 411 places, 449 transitions, 1669 flow. Second operand 9 states and 2970 transitions. [2022-07-22 21:40:40,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 551 transitions, 2402 flow [2022-07-22 21:40:40,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 551 transitions, 2402 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:40,229 INFO L242 Difference]: Finished difference. Result has 424 places, 470 transitions, 1873 flow [2022-07-22 21:40:40,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1873, PETRI_PLACES=424, PETRI_TRANSITIONS=470} [2022-07-22 21:40:40,231 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 88 predicate places. [2022-07-22 21:40:40,231 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 470 transitions, 1873 flow [2022-07-22 21:40:40,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:40,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:40,233 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:40,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:40,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:40,462 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash 242335789, now seen corresponding path program 4 times [2022-07-22 21:40:40,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:40,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316972778] [2022-07-22 21:40:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:40,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:40,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316972778] [2022-07-22 21:40:40,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316972778] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:40,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796338629] [2022-07-22 21:40:40,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 21:40:40,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:40,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:40,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:40,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 21:40:40,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 21:40:40,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:40:40,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:40:40,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:41,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:40:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:41,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796338629] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:41,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:40:41,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-07-22 21:40:41,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779409238] [2022-07-22 21:40:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:41,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:40:41,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:40:41,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:40:41,210 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-22 21:40:41,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 470 transitions, 1873 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:41,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:41,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-22 21:40:41,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:45,978 INFO L129 PetriNetUnfolder]: 3045/22215 cut-off events. [2022-07-22 21:40:45,978 INFO L130 PetriNetUnfolder]: For 19241/20785 co-relation queries the response was YES. [2022-07-22 21:40:46,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40332 conditions, 22215 events. 3045/22215 cut-off events. For 19241/20785 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 295720 event pairs, 644 based on Foata normal form. 842/21852 useless extension candidates. Maximal degree in co-relation 40287. Up to 1680 conditions per place. [2022-07-22 21:40:46,458 INFO L132 encePairwiseOnDemand]: 360/371 looper letters, 58 selfloop transitions, 55 changer transitions 0/522 dead transitions. [2022-07-22 21:40:46,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 522 transitions, 2412 flow [2022-07-22 21:40:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:40:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:40:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2036 transitions. [2022-07-22 21:40:46,463 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9146451033243486 [2022-07-22 21:40:46,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2036 transitions. [2022-07-22 21:40:46,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2036 transitions. [2022-07-22 21:40:46,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:46,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2036 transitions. [2022-07-22 21:40:46,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 339.3333333333333) internal successors, (2036), 6 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,476 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,476 INFO L186 Difference]: Start difference. First operand has 424 places, 470 transitions, 1873 flow. Second operand 6 states and 2036 transitions. [2022-07-22 21:40:46,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 522 transitions, 2412 flow [2022-07-22 21:40:46,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 522 transitions, 2404 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:46,642 INFO L242 Difference]: Finished difference. Result has 433 places, 492 transitions, 2243 flow [2022-07-22 21:40:46,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2243, PETRI_PLACES=433, PETRI_TRANSITIONS=492} [2022-07-22 21:40:46,644 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 97 predicate places. [2022-07-22 21:40:46,644 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 492 transitions, 2243 flow [2022-07-22 21:40:46,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,645 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:46,645 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:46,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:46,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 21:40:46,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2115456373, now seen corresponding path program 5 times [2022-07-22 21:40:46,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:46,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434847599] [2022-07-22 21:40:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:46,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:47,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434847599] [2022-07-22 21:40:47,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434847599] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989955934] [2022-07-22 21:40:47,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 21:40:47,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:47,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:47,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 21:40:47,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-22 21:40:47,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:40:47,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:40:47,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:47,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:40:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:47,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989955934] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:47,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:40:47,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-07-22 21:40:47,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282215730] [2022-07-22 21:40:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:47,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:40:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:40:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:40:47,691 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-22 21:40:47,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 492 transitions, 2243 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:47,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-22 21:40:47,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:53,051 INFO L129 PetriNetUnfolder]: 3077/25211 cut-off events. [2022-07-22 21:40:53,051 INFO L130 PetriNetUnfolder]: For 32300/34627 co-relation queries the response was YES. [2022-07-22 21:40:53,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47400 conditions, 25211 events. 3077/25211 cut-off events. For 32300/34627 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 342270 event pairs, 723 based on Foata normal form. 780/24866 useless extension candidates. Maximal degree in co-relation 47350. Up to 1856 conditions per place. [2022-07-22 21:40:53,513 INFO L132 encePairwiseOnDemand]: 363/371 looper letters, 73 selfloop transitions, 55 changer transitions 0/537 dead transitions. [2022-07-22 21:40:53,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 537 transitions, 2796 flow [2022-07-22 21:40:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:40:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:40:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2031 transitions. [2022-07-22 21:40:53,520 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9123989218328841 [2022-07-22 21:40:53,520 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2031 transitions. [2022-07-22 21:40:53,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2031 transitions. [2022-07-22 21:40:53,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:53,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2031 transitions. [2022-07-22 21:40:53,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.5) internal successors, (2031), 6 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,528 INFO L186 Difference]: Start difference. First operand has 433 places, 492 transitions, 2243 flow. Second operand 6 states and 2031 transitions. [2022-07-22 21:40:53,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 537 transitions, 2796 flow [2022-07-22 21:40:53,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 537 transitions, 2794 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:53,743 INFO L242 Difference]: Finished difference. Result has 443 places, 505 transitions, 2610 flow [2022-07-22 21:40:53,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2610, PETRI_PLACES=443, PETRI_TRANSITIONS=505} [2022-07-22 21:40:53,745 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 107 predicate places. [2022-07-22 21:40:53,745 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 505 transitions, 2610 flow [2022-07-22 21:40:53,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,746 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:53,746 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:53,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 21:40:53,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 21:40:53,975 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:53,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:53,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1545462397, now seen corresponding path program 6 times [2022-07-22 21:40:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:53,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357114764] [2022-07-22 21:40:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:40:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:54,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357114764] [2022-07-22 21:40:54,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357114764] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:40:54,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415297636] [2022-07-22 21:40:54,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 21:40:54,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:40:54,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:54,069 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:40:54,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 21:40:54,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-07-22 21:40:54,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:40:54,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:40:54,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:40:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 21:40:54,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:40:54,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415297636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:54,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:40:54,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-22 21:40:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94784027] [2022-07-22 21:40:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:54,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:40:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:40:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:40:54,379 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-22 21:40:54,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 505 transitions, 2610 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:54,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:54,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-22 21:40:54,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:01,300 INFO L129 PetriNetUnfolder]: 3790/29097 cut-off events. [2022-07-22 21:41:01,300 INFO L130 PetriNetUnfolder]: For 40411/41727 co-relation queries the response was YES. [2022-07-22 21:41:01,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56963 conditions, 29097 events. 3790/29097 cut-off events. For 40411/41727 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 393393 event pairs, 942 based on Foata normal form. 415/28533 useless extension candidates. Maximal degree in co-relation 56908. Up to 2242 conditions per place. [2022-07-22 21:41:01,749 INFO L132 encePairwiseOnDemand]: 360/371 looper letters, 108 selfloop transitions, 61 changer transitions 2/595 dead transitions. [2022-07-22 21:41:01,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 595 transitions, 3395 flow [2022-07-22 21:41:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:41:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:41:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4272 transitions. [2022-07-22 21:41:01,753 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.885755753680282 [2022-07-22 21:41:01,754 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4272 transitions. [2022-07-22 21:41:01,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4272 transitions. [2022-07-22 21:41:01,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:01,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4272 transitions. [2022-07-22 21:41:01,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 328.61538461538464) internal successors, (4272), 13 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,769 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,769 INFO L186 Difference]: Start difference. First operand has 443 places, 505 transitions, 2610 flow. Second operand 13 states and 4272 transitions. [2022-07-22 21:41:01,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 595 transitions, 3395 flow [2022-07-22 21:41:02,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 595 transitions, 3325 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:02,101 INFO L242 Difference]: Finished difference. Result has 460 places, 526 transitions, 2927 flow [2022-07-22 21:41:02,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2927, PETRI_PLACES=460, PETRI_TRANSITIONS=526} [2022-07-22 21:41:02,102 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 124 predicate places. [2022-07-22 21:41:02,102 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 526 transitions, 2927 flow [2022-07-22 21:41:02,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:02,103 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:02,103 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:02,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 21:41:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 21:41:02,307 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2041074423, now seen corresponding path program 1 times [2022-07-22 21:41:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:02,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725454215] [2022-07-22 21:41:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 21:41:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:02,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725454215] [2022-07-22 21:41:02,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725454215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:02,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:02,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:41:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397993481] [2022-07-22 21:41:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:02,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:41:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:41:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:41:02,400 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-07-22 21:41:02,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 526 transitions, 2927 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:02,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:02,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-07-22 21:41:02,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:06,507 INFO L129 PetriNetUnfolder]: 1058/17922 cut-off events. [2022-07-22 21:41:06,508 INFO L130 PetriNetUnfolder]: For 22070/23336 co-relation queries the response was YES. [2022-07-22 21:41:06,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31595 conditions, 17922 events. 1058/17922 cut-off events. For 22070/23336 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 228706 event pairs, 109 based on Foata normal form. 324/17590 useless extension candidates. Maximal degree in co-relation 31533. Up to 445 conditions per place. [2022-07-22 21:41:06,744 INFO L132 encePairwiseOnDemand]: 366/371 looper letters, 80 selfloop transitions, 4 changer transitions 0/542 dead transitions. [2022-07-22 21:41:06,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 542 transitions, 3137 flow [2022-07-22 21:41:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:41:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:41:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2022-07-22 21:41:06,746 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9126684636118598 [2022-07-22 21:41:06,746 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2022-07-22 21:41:06,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2022-07-22 21:41:06,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:06,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2022-07-22 21:41:06,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:06,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:06,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:06,752 INFO L186 Difference]: Start difference. First operand has 460 places, 526 transitions, 2927 flow. Second operand 5 states and 1693 transitions. [2022-07-22 21:41:06,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 542 transitions, 3137 flow [2022-07-22 21:41:06,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 542 transitions, 3110 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:06,884 INFO L242 Difference]: Finished difference. Result has 462 places, 521 transitions, 2879 flow [2022-07-22 21:41:06,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2879, PETRI_PLACES=462, PETRI_TRANSITIONS=521} [2022-07-22 21:41:06,885 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 126 predicate places. [2022-07-22 21:41:06,885 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 521 transitions, 2879 flow [2022-07-22 21:41:06,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:06,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:06,886 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:06,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:41:06,887 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1416166265, now seen corresponding path program 7 times [2022-07-22 21:41:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:06,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513342229] [2022-07-22 21:41:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:41:06,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:06,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513342229] [2022-07-22 21:41:06,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513342229] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:06,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125109113] [2022-07-22 21:41:06,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 21:41:06,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:41:06,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:06,986 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:41:06,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 21:41:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:07,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:41:07,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:41:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:41:07,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:41:07,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125109113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:07,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:41:07,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-22 21:41:07,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023566850] [2022-07-22 21:41:07,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:07,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:41:07,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:41:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:41:07,255 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-22 21:41:07,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 521 transitions, 2879 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:07,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:07,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-22 21:41:07,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:14,313 INFO L129 PetriNetUnfolder]: 3743/30806 cut-off events. [2022-07-22 21:41:14,314 INFO L130 PetriNetUnfolder]: For 56760/60269 co-relation queries the response was YES. [2022-07-22 21:41:14,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62473 conditions, 30806 events. 3743/30806 cut-off events. For 56760/60269 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 431740 event pairs, 1087 based on Foata normal form. 1045/30507 useless extension candidates. Maximal degree in co-relation 62409. Up to 2406 conditions per place. [2022-07-22 21:41:15,044 INFO L132 encePairwiseOnDemand]: 363/371 looper letters, 96 selfloop transitions, 39 changer transitions 3/563 dead transitions. [2022-07-22 21:41:15,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 563 transitions, 3457 flow [2022-07-22 21:41:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:41:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:41:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2366 transitions. [2022-07-22 21:41:15,047 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9110512129380054 [2022-07-22 21:41:15,047 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2366 transitions. [2022-07-22 21:41:15,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2366 transitions. [2022-07-22 21:41:15,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:15,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2366 transitions. [2022-07-22 21:41:15,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:15,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:15,054 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:15,055 INFO L186 Difference]: Start difference. First operand has 462 places, 521 transitions, 2879 flow. Second operand 7 states and 2366 transitions. [2022-07-22 21:41:15,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 563 transitions, 3457 flow [2022-07-22 21:41:15,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 563 transitions, 3457 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:41:15,353 INFO L242 Difference]: Finished difference. Result has 471 places, 528 transitions, 3097 flow [2022-07-22 21:41:15,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3097, PETRI_PLACES=471, PETRI_TRANSITIONS=528} [2022-07-22 21:41:15,353 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 135 predicate places. [2022-07-22 21:41:15,354 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 528 transitions, 3097 flow [2022-07-22 21:41:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:15,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:15,354 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:15,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 21:41:15,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 21:41:15,561 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:15,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:15,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2023621987, now seen corresponding path program 8 times [2022-07-22 21:41:15,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:15,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995908894] [2022-07-22 21:41:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:15,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:41:15,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995908894] [2022-07-22 21:41:15,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995908894] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650436873] [2022-07-22 21:41:15,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:41:15,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:41:15,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:15,680 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:41:15,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 21:41:15,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 21:41:15,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:41:15,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:41:15,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:41:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 21:41:15,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:41:15,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650436873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:15,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:41:15,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-22 21:41:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935840281] [2022-07-22 21:41:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:41:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:41:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:15,991 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-22 21:41:15,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 528 transitions, 3097 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:15,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:15,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-22 21:41:15,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand