./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:20:17,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:20:17,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:20:17,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:20:17,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:20:17,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:20:17,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:20:17,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:20:17,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:20:17,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:20:17,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:20:17,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:20:17,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:20:17,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:20:17,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:20:17,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:20:17,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:20:17,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:20:17,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:20:17,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:20:17,310 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:20:17,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:20:17,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:20:17,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:20:17,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:20:17,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:20:17,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:20:17,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:20:17,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:20:17,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:20:17,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:20:17,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:20:17,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:20:17,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:20:17,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:20:17,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:20:17,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:20:17,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:20:17,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:20:17,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:20:17,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:20:17,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:20:17,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:20:17,365 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:20:17,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:20:17,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:20:17,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:20:17,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:20:17,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:20:17,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:20:17,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:20:17,368 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:20:17,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:20:17,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:20:17,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:20:17,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:20:17,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:20:17,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:20:17,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:20:17,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:20:17,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:20:17,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:20:17,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:20:17,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:20:17,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:20:17,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:20:17,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:20:17,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:20:17,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:20:17,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:20:17,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:20:17,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:20:17,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:20:17,373 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:20:17,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:20:17,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:20:17,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2022-07-12 10:20:17,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:20:17,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:20:17,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:20:17,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:20:17,650 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:20:17,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-07-12 10:20:17,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab940c112/65806a14658f4361a54771863edd5301/FLAGff3e13f17 [2022-07-12 10:20:18,191 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:20:18,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-07-12 10:20:18,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab940c112/65806a14658f4361a54771863edd5301/FLAGff3e13f17 [2022-07-12 10:20:18,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab940c112/65806a14658f4361a54771863edd5301 [2022-07-12 10:20:18,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:20:18,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:20:18,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:20:18,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:20:18,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:20:18,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:18,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f37fbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18, skipping insertion in model container [2022-07-12 10:20:18,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:18,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:20:18,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:20:18,851 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-07-12 10:20:18,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:20:18,865 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:20:18,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-07-12 10:20:18,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:20:18,922 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:20:18,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18 WrapperNode [2022-07-12 10:20:18,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:20:18,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:20:18,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:20:18,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:20:18,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:18,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:18,969 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-07-12 10:20:18,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:20:18,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:20:18,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:20:18,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:20:18,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:18,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:18,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:18,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:19,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:19,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:19,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:19,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:20:19,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:20:19,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:20:19,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:20:19,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (1/1) ... [2022-07-12 10:20:19,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:20:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:20:19,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:20:19,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:20:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:20:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:20:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:20:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:20:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:20:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:20:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:20:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:20:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:20:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:20:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:20:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:20:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:20:19,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:20:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:20:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:20:19,099 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:20:19,193 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:20:19,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:20:19,501 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:20:19,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:20:19,510 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 10:20:19,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:20:19 BoogieIcfgContainer [2022-07-12 10:20:19,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:20:19,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:20:19,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:20:19,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:20:19,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:20:18" (1/3) ... [2022-07-12 10:20:19,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ce4052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:20:19, skipping insertion in model container [2022-07-12 10:20:19,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:20:18" (2/3) ... [2022-07-12 10:20:19,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ce4052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:20:19, skipping insertion in model container [2022-07-12 10:20:19,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:20:19" (3/3) ... [2022-07-12 10:20:19,522 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-07-12 10:20:19,529 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:20:19,536 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:20:19,536 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:20:19,537 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:20:19,632 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-12 10:20:19,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2022-07-12 10:20:19,730 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2022-07-12 10:20:19,731 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:20:19,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-07-12 10:20:19,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2022-07-12 10:20:19,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2022-07-12 10:20:19,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:20:19,758 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@3cd57a39, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@479d23ef [2022-07-12 10:20:19,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:20:19,786 INFO L129 PetriNetUnfolder]: 10/131 cut-off events. [2022-07-12 10:20:19,786 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:20:19,787 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:19,787 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:19,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash 685807791, now seen corresponding path program 1 times [2022-07-12 10:20:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:19,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339260850] [2022-07-12 10:20:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:19,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:20,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:20,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339260850] [2022-07-12 10:20:20,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339260850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:20:20,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:20:20,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:20:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053599369] [2022-07-12 10:20:20,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:20:20,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:20:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:20:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:20:20,126 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2022-07-12 10:20:20,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:20,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:20,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2022-07-12 10:20:20,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:20,228 INFO L129 PetriNetUnfolder]: 4/126 cut-off events. [2022-07-12 10:20:20,229 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:20:20,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2022-07-12 10:20:20,232 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2022-07-12 10:20:20,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2022-07-12 10:20:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:20:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:20:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2022-07-12 10:20:20,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2022-07-12 10:20:20,256 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2022-07-12 10:20:20,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2022-07-12 10:20:20,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:20,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2022-07-12 10:20:20,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:20,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:20,276 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:20,278 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2022-07-12 10:20:20,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2022-07-12 10:20:20,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-12 10:20:20,289 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2022-07-12 10:20:20,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-07-12 10:20:20,296 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2022-07-12 10:20:20,296 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2022-07-12 10:20:20,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:20,297 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:20,297 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:20:20,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2022-07-12 10:20:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:20,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117252123] [2022-07-12 10:20:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:20,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:20,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117252123] [2022-07-12 10:20:20,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117252123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:20:20,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:20:20,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:20:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035544366] [2022-07-12 10:20:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:20:20,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:20:20,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:20:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:20:20,911 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2022-07-12 10:20:20,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:20,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:20,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2022-07-12 10:20:20,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:24,798 INFO L129 PetriNetUnfolder]: 24847/33594 cut-off events. [2022-07-12 10:20:24,799 INFO L130 PetriNetUnfolder]: For 860/934 co-relation queries the response was YES. [2022-07-12 10:20:24,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 33594 events. 24847/33594 cut-off events. For 860/934 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 189991 event pairs, 11708 based on Foata normal form. 1/29807 useless extension candidates. Maximal degree in co-relation 67679. Up to 32788 conditions per place. [2022-07-12 10:20:25,119 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2022-07-12 10:20:25,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2022-07-12 10:20:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:20:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:20:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2022-07-12 10:20:25,128 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2022-07-12 10:20:25,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2022-07-12 10:20:25,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2022-07-12 10:20:25,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:25,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2022-07-12 10:20:25,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:25,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:25,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:25,135 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2022-07-12 10:20:25,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2022-07-12 10:20:25,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:20:25,142 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2022-07-12 10:20:25,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-07-12 10:20:25,143 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-07-12 10:20:25,144 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2022-07-12 10:20:25,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:25,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:25,145 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:25,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:20:25,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -860683858, now seen corresponding path program 1 times [2022-07-12 10:20:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:25,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223690900] [2022-07-12 10:20:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:25,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223690900] [2022-07-12 10:20:25,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223690900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:20:25,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:20:25,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:20:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802293610] [2022-07-12 10:20:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:20:25,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:20:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:20:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:20:25,351 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-12 10:20:25,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:25,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:25,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-12 10:20:25,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:26,231 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([348] L53-->L54: Formula: (= v_~x2~0_9 (* v_~x2~0_10 2)) InVars {~x2~0=v_~x2~0_10} OutVars{~x2~0=v_~x2~0_9} AuxVars[] AssignedVars[~x2~0][111], [30#L109-4true, 42#L38-2true, 15#L82true, 175#true, 91#L54true, Black: 170#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 155#true, Black: 162#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296))))), Black: 168#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 158#true, 23#L68true]) [2022-07-12 10:20:26,232 INFO L384 tUnfolder$Statistics]: this new event has 82 ancestors and is cut-off event [2022-07-12 10:20:26,232 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-12 10:20:26,232 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-12 10:20:26,233 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-07-12 10:20:26,264 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([348] L53-->L54: Formula: (= v_~x2~0_9 (* v_~x2~0_10 2)) InVars {~x2~0=v_~x2~0_10} OutVars{~x2~0=v_~x2~0_9} AuxVars[] AssignedVars[~x2~0][111], [15#L82true, 175#true, 91#L54true, 43#L110-2true, Black: 170#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 155#true, Black: 162#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296))))), Black: 168#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 158#true, 23#L68true]) [2022-07-12 10:20:26,264 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is cut-off event [2022-07-12 10:20:26,264 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-12 10:20:26,264 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-12 10:20:26,265 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-07-12 10:20:26,291 INFO L129 PetriNetUnfolder]: 5288/9459 cut-off events. [2022-07-12 10:20:26,292 INFO L130 PetriNetUnfolder]: For 710/816 co-relation queries the response was YES. [2022-07-12 10:20:26,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18608 conditions, 9459 events. 5288/9459 cut-off events. For 710/816 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72997 event pairs, 764 based on Foata normal form. 30/7487 useless extension candidates. Maximal degree in co-relation 18601. Up to 5185 conditions per place. [2022-07-12 10:20:26,400 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 88 selfloop transitions, 14 changer transitions 0/184 dead transitions. [2022-07-12 10:20:26,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 184 transitions, 648 flow [2022-07-12 10:20:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:20:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:20:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2022-07-12 10:20:26,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7420901246404602 [2022-07-12 10:20:26,404 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2022-07-12 10:20:26,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2022-07-12 10:20:26,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:26,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2022-07-12 10:20:26,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:26,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:26,410 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:26,411 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 7 states and 774 transitions. [2022-07-12 10:20:26,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 184 transitions, 648 flow [2022-07-12 10:20:26,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 184 transitions, 627 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-12 10:20:26,416 INFO L242 Difference]: Finished difference. Result has 138 places, 134 transitions, 366 flow [2022-07-12 10:20:26,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2022-07-12 10:20:26,418 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-07-12 10:20:26,418 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 366 flow [2022-07-12 10:20:26,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:26,419 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:26,419 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:20:26,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash -621750282, now seen corresponding path program 2 times [2022-07-12 10:20:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:26,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182254938] [2022-07-12 10:20:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:26,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:26,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182254938] [2022-07-12 10:20:26,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182254938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:20:26,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:20:26,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:20:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159516625] [2022-07-12 10:20:26,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:20:26,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:20:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:20:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:20:26,645 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-07-12 10:20:26,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:26,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:26,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-07-12 10:20:26,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:29,946 INFO L129 PetriNetUnfolder]: 32659/44813 cut-off events. [2022-07-12 10:20:29,946 INFO L130 PetriNetUnfolder]: For 27730/27818 co-relation queries the response was YES. [2022-07-12 10:20:30,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109057 conditions, 44813 events. 32659/44813 cut-off events. For 27730/27818 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 273140 event pairs, 16410 based on Foata normal form. 37/42221 useless extension candidates. Maximal degree in co-relation 109049. Up to 43690 conditions per place. [2022-07-12 10:20:30,386 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 88 selfloop transitions, 12 changer transitions 1/163 dead transitions. [2022-07-12 10:20:30,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 163 transitions, 672 flow [2022-07-12 10:20:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:20:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:20:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2022-07-12 10:20:30,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6297539149888143 [2022-07-12 10:20:30,389 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2022-07-12 10:20:30,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2022-07-12 10:20:30,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:30,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2022-07-12 10:20:30,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:30,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:30,398 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:30,399 INFO L186 Difference]: Start difference. First operand has 138 places, 134 transitions, 366 flow. Second operand 6 states and 563 transitions. [2022-07-12 10:20:30,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 163 transitions, 672 flow [2022-07-12 10:20:30,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 163 transitions, 668 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:20:30,417 INFO L242 Difference]: Finished difference. Result has 143 places, 139 transitions, 432 flow [2022-07-12 10:20:30,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=143, PETRI_TRANSITIONS=139} [2022-07-12 10:20:30,419 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 8 predicate places. [2022-07-12 10:20:30,420 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 139 transitions, 432 flow [2022-07-12 10:20:30,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:30,420 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:30,420 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:30,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:20:30,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:30,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:30,422 INFO L85 PathProgramCache]: Analyzing trace with hash -284960424, now seen corresponding path program 1 times [2022-07-12 10:20:30,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:30,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957882815] [2022-07-12 10:20:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:30,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957882815] [2022-07-12 10:20:30,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957882815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:20:30,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:20:30,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:20:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286927884] [2022-07-12 10:20:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:20:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:20:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:20:30,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:20:30,681 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-12 10:20:30,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 139 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:30,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:30,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-12 10:20:30,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:31,925 INFO L129 PetriNetUnfolder]: 5963/13479 cut-off events. [2022-07-12 10:20:31,925 INFO L130 PetriNetUnfolder]: For 6868/7049 co-relation queries the response was YES. [2022-07-12 10:20:31,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27216 conditions, 13479 events. 5963/13479 cut-off events. For 6868/7049 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 133624 event pairs, 3044 based on Foata normal form. 182/11972 useless extension candidates. Maximal degree in co-relation 27205. Up to 5202 conditions per place. [2022-07-12 10:20:32,035 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 94 selfloop transitions, 15 changer transitions 0/193 dead transitions. [2022-07-12 10:20:32,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 819 flow [2022-07-12 10:20:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:20:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:20:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2022-07-12 10:20:32,041 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7420901246404602 [2022-07-12 10:20:32,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2022-07-12 10:20:32,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2022-07-12 10:20:32,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:32,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2022-07-12 10:20:32,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:32,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:32,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:32,047 INFO L186 Difference]: Start difference. First operand has 143 places, 139 transitions, 432 flow. Second operand 7 states and 774 transitions. [2022-07-12 10:20:32,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 819 flow [2022-07-12 10:20:32,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 193 transitions, 797 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-12 10:20:32,062 INFO L242 Difference]: Finished difference. Result has 148 places, 142 transitions, 490 flow [2022-07-12 10:20:32,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2022-07-12 10:20:32,066 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 13 predicate places. [2022-07-12 10:20:32,066 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 490 flow [2022-07-12 10:20:32,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:32,067 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:32,067 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:20:32,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1211854294, now seen corresponding path program 1 times [2022-07-12 10:20:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:32,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538245853] [2022-07-12 10:20:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:32,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:32,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:32,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538245853] [2022-07-12 10:20:32,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538245853] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:20:32,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391339592] [2022-07-12 10:20:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:32,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:20:32,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:20:32,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:20:32,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:20:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:32,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:20:32,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:20:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:32,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:20:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:33,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391339592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:20:33,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:20:33,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-07-12 10:20:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573819272] [2022-07-12 10:20:33,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:20:33,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:20:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:20:33,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:20:33,026 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-12 10:20:33,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 490 flow. Second operand has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:33,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:33,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-12 10:20:33,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:35,260 INFO L129 PetriNetUnfolder]: 13397/21670 cut-off events. [2022-07-12 10:20:35,260 INFO L130 PetriNetUnfolder]: For 50248/50724 co-relation queries the response was YES. [2022-07-12 10:20:35,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63137 conditions, 21670 events. 13397/21670 cut-off events. For 50248/50724 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 179630 event pairs, 1103 based on Foata normal form. 217/19607 useless extension candidates. Maximal degree in co-relation 63124. Up to 12306 conditions per place. [2022-07-12 10:20:35,434 INFO L132 encePairwiseOnDemand]: 136/149 looper letters, 157 selfloop transitions, 22 changer transitions 0/265 dead transitions. [2022-07-12 10:20:35,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 265 transitions, 1554 flow [2022-07-12 10:20:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:20:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:20:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1285 transitions. [2022-07-12 10:20:35,438 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7186800894854586 [2022-07-12 10:20:35,438 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1285 transitions. [2022-07-12 10:20:35,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1285 transitions. [2022-07-12 10:20:35,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:35,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1285 transitions. [2022-07-12 10:20:35,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 107.08333333333333) internal successors, (1285), 12 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:35,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 149.0) internal successors, (1937), 13 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:35,447 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 149.0) internal successors, (1937), 13 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:35,447 INFO L186 Difference]: Start difference. First operand has 148 places, 142 transitions, 490 flow. Second operand 12 states and 1285 transitions. [2022-07-12 10:20:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 265 transitions, 1554 flow [2022-07-12 10:20:35,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 265 transitions, 1520 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-07-12 10:20:35,498 INFO L242 Difference]: Finished difference. Result has 164 places, 154 transitions, 618 flow [2022-07-12 10:20:35,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=164, PETRI_TRANSITIONS=154} [2022-07-12 10:20:35,500 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-07-12 10:20:35,500 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 154 transitions, 618 flow [2022-07-12 10:20:35,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:35,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:35,501 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:35,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:20:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 10:20:35,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash 785459654, now seen corresponding path program 1 times [2022-07-12 10:20:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:35,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443345853] [2022-07-12 10:20:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:35,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443345853] [2022-07-12 10:20:35,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443345853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:20:35,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:20:35,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:20:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80122793] [2022-07-12 10:20:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:20:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:20:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:20:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:20:35,922 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-07-12 10:20:35,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 154 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:35,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:35,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-07-12 10:20:35,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:42,898 INFO L129 PetriNetUnfolder]: 53406/78664 cut-off events. [2022-07-12 10:20:42,898 INFO L130 PetriNetUnfolder]: For 134613/134663 co-relation queries the response was YES. [2022-07-12 10:20:43,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232294 conditions, 78664 events. 53406/78664 cut-off events. For 134613/134663 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 582026 event pairs, 32395 based on Foata normal form. 21/78491 useless extension candidates. Maximal degree in co-relation 232274. Up to 72554 conditions per place. [2022-07-12 10:20:43,684 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 105 selfloop transitions, 13 changer transitions 8/188 dead transitions. [2022-07-12 10:20:43,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 188 transitions, 1104 flow [2022-07-12 10:20:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:20:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:20:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-07-12 10:20:43,688 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2022-07-12 10:20:43,688 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-07-12 10:20:43,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-07-12 10:20:43,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:43,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-07-12 10:20:43,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:43,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:43,692 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:43,692 INFO L186 Difference]: Start difference. First operand has 164 places, 154 transitions, 618 flow. Second operand 6 states and 562 transitions. [2022-07-12 10:20:43,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 188 transitions, 1104 flow [2022-07-12 10:20:44,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 188 transitions, 1098 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:20:44,263 INFO L242 Difference]: Finished difference. Result has 168 places, 158 transitions, 701 flow [2022-07-12 10:20:44,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=701, PETRI_PLACES=168, PETRI_TRANSITIONS=158} [2022-07-12 10:20:44,264 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2022-07-12 10:20:44,264 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 158 transitions, 701 flow [2022-07-12 10:20:44,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:44,264 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:44,264 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:44,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:20:44,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1705357160, now seen corresponding path program 2 times [2022-07-12 10:20:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:44,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707274708] [2022-07-12 10:20:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:44,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:44,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:44,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707274708] [2022-07-12 10:20:44,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707274708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:20:44,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:20:44,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:20:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557488923] [2022-07-12 10:20:44,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:20:44,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:20:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:20:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:20:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:20:44,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-12 10:20:44,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 158 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:44,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:20:44,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-12 10:20:44,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:20:46,685 INFO L129 PetriNetUnfolder]: 14241/22849 cut-off events. [2022-07-12 10:20:46,685 INFO L130 PetriNetUnfolder]: For 63726/64268 co-relation queries the response was YES. [2022-07-12 10:20:46,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76187 conditions, 22849 events. 14241/22849 cut-off events. For 63726/64268 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 188845 event pairs, 4251 based on Foata normal form. 543/22291 useless extension candidates. Maximal degree in co-relation 76164. Up to 15411 conditions per place. [2022-07-12 10:20:47,213 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 122 selfloop transitions, 17 changer transitions 0/227 dead transitions. [2022-07-12 10:20:47,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 227 transitions, 1399 flow [2022-07-12 10:20:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:20:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:20:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2022-07-12 10:20:47,215 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.738255033557047 [2022-07-12 10:20:47,216 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2022-07-12 10:20:47,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2022-07-12 10:20:47,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:20:47,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2022-07-12 10:20:47,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:47,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:47,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:47,221 INFO L186 Difference]: Start difference. First operand has 168 places, 158 transitions, 701 flow. Second operand 7 states and 770 transitions. [2022-07-12 10:20:47,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 227 transitions, 1399 flow [2022-07-12 10:20:47,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 227 transitions, 1378 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-12 10:20:47,319 INFO L242 Difference]: Finished difference. Result has 174 places, 161 transitions, 769 flow [2022-07-12 10:20:47,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=769, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-07-12 10:20:47,320 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 39 predicate places. [2022-07-12 10:20:47,320 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 769 flow [2022-07-12 10:20:47,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:20:47,320 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:20:47,321 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:20:47,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:20:47,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:20:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:20:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash -333652181, now seen corresponding path program 1 times [2022-07-12 10:20:47,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:20:47,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556857157] [2022-07-12 10:20:47,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:47,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:20:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:20:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:20:49,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:20:49,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556857157] [2022-07-12 10:20:49,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556857157] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:20:49,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175803864] [2022-07-12 10:20:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:20:49,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:20:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:20:49,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:20:49,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process