./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-5.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/parallel-ticket-5.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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:28:21,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:28:21,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:28:21,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:28:21,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:28:21,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:28:21,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:28:21,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:28:21,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:28:21,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:28:21,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:28:21,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:28:21,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:28:21,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:28:21,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:28:21,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:28:21,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:28:21,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:28:21,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:28:21,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:28:21,653 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:28:21,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:28:21,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:28:21,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:28:21,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:28:21,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:28:21,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:28:21,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:28:21,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:28:21,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:28:21,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:28:21,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:28:21,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:28:21,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:28:21,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:28:21,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:28:21,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:28:21,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:28:21,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:28:21,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:28:21,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:28:21,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:28:21,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:28:21,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:28:21,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:28:21,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:28:21,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:28:21,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:28:21,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:28:21,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:28:21,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:28:21,719 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:28:21,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:28:21,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:28:21,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:28:21,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:28:21,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:28:21,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:28:21,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:28:21,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:28:21,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:28:21,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:28:21,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:28:21,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:28:21,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:28:21,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:28:21,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:28:21,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:21,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:28:21,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:28:21,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:28:21,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:28:21,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:28:21,727 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:28:21,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:28:21,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:28:21,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2022-07-12 10:28:21,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:28:21,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:28:21,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:28:21,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:28:21,969 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:28:21,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-07-12 10:28:22,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801fb4819/1a996e1ce9654465924aaad93f1eae67/FLAG4eb015e25 [2022-07-12 10:28:22,558 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:28:22,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-07-12 10:28:22,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801fb4819/1a996e1ce9654465924aaad93f1eae67/FLAG4eb015e25 [2022-07-12 10:28:22,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801fb4819/1a996e1ce9654465924aaad93f1eae67 [2022-07-12 10:28:22,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:28:22,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:28:22,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:22,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:28:22,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:28:22,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:22" (1/1) ... [2022-07-12 10:28:22,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d103c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:22, skipping insertion in model container [2022-07-12 10:28:22,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:22" (1/1) ... [2022-07-12 10:28:22,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:28:22,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:28:23,057 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/parallel-ticket-5.wvr.c[3963,3976] [2022-07-12 10:28:23,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:23,071 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:28:23,108 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/parallel-ticket-5.wvr.c[3963,3976] [2022-07-12 10:28:23,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:23,126 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:28:23,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23 WrapperNode [2022-07-12 10:28:23,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:23,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:23,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:28:23,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:28:23,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,173 INFO L137 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2022-07-12 10:28:23,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:23,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:28:23,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:28:23,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:28:23,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:28:23,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:28:23,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:28:23,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:28:23,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (1/1) ... [2022-07-12 10:28:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:23,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:23,235 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 10:28:23,240 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 10:28:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:28:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:28:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:28:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:28:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:28:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:28:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:28:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:28:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:28:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:28:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-12 10:28:23,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-12 10:28:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:28:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:28:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:28:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:28:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:28:23,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:28:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:28:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:28:23,280 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 10:28:23,350 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:28:23,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:28:23,662 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:28:23,738 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:28:23,738 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:28:23,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:23 BoogieIcfgContainer [2022-07-12 10:28:23,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:28:23,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:28:23,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:28:23,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:28:23,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:28:22" (1/3) ... [2022-07-12 10:28:23,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfa6423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:23, skipping insertion in model container [2022-07-12 10:28:23,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:23" (2/3) ... [2022-07-12 10:28:23,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfa6423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:23, skipping insertion in model container [2022-07-12 10:28:23,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:23" (3/3) ... [2022-07-12 10:28:23,751 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-07-12 10:28:23,757 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:28:23,766 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:28:23,766 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:28:23,767 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:28:23,821 INFO L135 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-07-12 10:28:23,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 165 transitions, 370 flow [2022-07-12 10:28:23,958 INFO L129 PetriNetUnfolder]: 2/160 cut-off events. [2022-07-12 10:28:23,959 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-12 10:28:23,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 160 events. 2/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-07-12 10:28:23,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 165 transitions, 370 flow [2022-07-12 10:28:23,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 145 transitions, 320 flow [2022-07-12 10:28:23,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:28:23,982 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@3719a6f6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ab10fe1 [2022-07-12 10:28:23,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-12 10:28:24,010 INFO L129 PetriNetUnfolder]: 2/144 cut-off events. [2022-07-12 10:28:24,011 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-12 10:28:24,012 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:24,013 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:24,014 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 3 more)] === [2022-07-12 10:28:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:24,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1882316905, now seen corresponding path program 1 times [2022-07-12 10:28:24,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:24,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675865812] [2022-07-12 10:28:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:25,174 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 10:28:25,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:25,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675865812] [2022-07-12 10:28:25,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675865812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:25,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:25,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:28:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055741537] [2022-07-12 10:28:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:25,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:28:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:28:25,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:28:25,216 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-07-12 10:28:25,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 145 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states 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 10:28:25,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:25,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-07-12 10:28:25,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:31,131 INFO L129 PetriNetUnfolder]: 28398/43787 cut-off events. [2022-07-12 10:28:31,132 INFO L130 PetriNetUnfolder]: For 7195/7249 co-relation queries the response was YES. [2022-07-12 10:28:31,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86820 conditions, 43787 events. 28398/43787 cut-off events. For 7195/7249 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 331005 event pairs, 16376 based on Foata normal form. 4/42714 useless extension candidates. Maximal degree in co-relation 68872. Up to 12802 conditions per place. [2022-07-12 10:28:31,505 INFO L132 encePairwiseOnDemand]: 141/165 looper letters, 122 selfloop transitions, 27 changer transitions 26/267 dead transitions. [2022-07-12 10:28:31,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 267 transitions, 1004 flow [2022-07-12 10:28:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:28:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:28:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1957 transitions. [2022-07-12 10:28:31,524 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7412878787878788 [2022-07-12 10:28:31,524 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1957 transitions. [2022-07-12 10:28:31,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1957 transitions. [2022-07-12 10:28:31,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:31,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1957 transitions. [2022-07-12 10:28:31,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.3125) internal successors, (1957), 16 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states 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 10:28:31,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states 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 10:28:31,550 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states 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 10:28:31,552 INFO L186 Difference]: Start difference. First operand has 159 places, 145 transitions, 320 flow. Second operand 16 states and 1957 transitions. [2022-07-12 10:28:31,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 267 transitions, 1004 flow [2022-07-12 10:28:31,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 267 transitions, 924 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-12 10:28:31,673 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 479 flow [2022-07-12 10:28:31,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=479, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2022-07-12 10:28:31,680 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-07-12 10:28:31,681 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 479 flow [2022-07-12 10:28:31,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states 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 10:28:31,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:31,683 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:31,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:28:31,684 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 3 more)] === [2022-07-12 10:28:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1644980583, now seen corresponding path program 2 times [2022-07-12 10:28:31,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:31,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274218533] [2022-07-12 10:28:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:32,052 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 10:28:32,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274218533] [2022-07-12 10:28:32,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274218533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:32,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:32,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:28:32,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852039362] [2022-07-12 10:28:32,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:32,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:28:32,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:28:32,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:28:32,069 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 165 [2022-07-12 10:28:32,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 479 flow. Second operand has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states 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 10:28:32,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:32,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 165 [2022-07-12 10:28:32,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:35,950 INFO L129 PetriNetUnfolder]: 24946/42110 cut-off events. [2022-07-12 10:28:35,951 INFO L130 PetriNetUnfolder]: For 33867/33867 co-relation queries the response was YES. [2022-07-12 10:28:36,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107062 conditions, 42110 events. 24946/42110 cut-off events. For 33867/33867 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 368079 event pairs, 6868 based on Foata normal form. 1/41568 useless extension candidates. Maximal degree in co-relation 107043. Up to 22411 conditions per place. [2022-07-12 10:28:36,290 INFO L132 encePairwiseOnDemand]: 152/165 looper letters, 65 selfloop transitions, 16 changer transitions 47/226 dead transitions. [2022-07-12 10:28:36,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 226 transitions, 993 flow [2022-07-12 10:28:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1279 transitions. [2022-07-12 10:28:36,295 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7751515151515151 [2022-07-12 10:28:36,295 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1279 transitions. [2022-07-12 10:28:36,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1279 transitions. [2022-07-12 10:28:36,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:36,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1279 transitions. [2022-07-12 10:28:36,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.9) internal successors, (1279), 10 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states 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 10:28:36,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 10:28:36,304 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 10:28:36,304 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 479 flow. Second operand 10 states and 1279 transitions. [2022-07-12 10:28:36,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 226 transitions, 993 flow [2022-07-12 10:28:36,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 226 transitions, 954 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-07-12 10:28:36,376 INFO L242 Difference]: Finished difference. Result has 172 places, 166 transitions, 546 flow [2022-07-12 10:28:36,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=546, PETRI_PLACES=172, PETRI_TRANSITIONS=166} [2022-07-12 10:28:36,377 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 13 predicate places. [2022-07-12 10:28:36,378 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 166 transitions, 546 flow [2022-07-12 10:28:36,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states 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 10:28:36,380 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:36,381 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:36,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:28:36,381 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 3 more)] === [2022-07-12 10:28:36,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:36,382 INFO L85 PathProgramCache]: Analyzing trace with hash -20893239, now seen corresponding path program 3 times [2022-07-12 10:28:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:36,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954982551] [2022-07-12 10:28:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:36,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:36,617 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 10:28:36,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954982551] [2022-07-12 10:28:36,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954982551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:36,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:36,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:28:36,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731600371] [2022-07-12 10:28:36,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:36,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:28:36,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:36,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:28:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:28:36,624 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-12 10:28:36,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 166 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 10:28:36,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:36,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-12 10:28:36,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:38,614 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][203], [83#L131true, 41#L115true, 102#L74true, 43#L93true, 252#(<= (+ 3 ~s~0) ~t~0), Black: 225#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 236#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), 4#L161-2true, Black: 238#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~b~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 234#(and (= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 226#(and (= ~x~0 0) (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 221#true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0))]) [2022-07-12 10:28:38,614 INFO L384 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,614 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,615 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,615 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,616 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([491] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][165], [102#L74true, 43#L93true, 252#(<= (+ 3 ~s~0) ~t~0), Black: 225#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 236#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), 4#L161-2true, Black: 238#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~b~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 234#(and (= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), 74#L134true, Black: 226#(and (= ~x~0 0) (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), 221#true, Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 144#L112true]) [2022-07-12 10:28:38,616 INFO L384 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,616 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,616 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,616 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-12 10:28:38,704 INFO L129 PetriNetUnfolder]: 12828/21913 cut-off events. [2022-07-12 10:28:38,704 INFO L130 PetriNetUnfolder]: For 33297/39498 co-relation queries the response was YES. [2022-07-12 10:28:38,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61428 conditions, 21913 events. 12828/21913 cut-off events. For 33297/39498 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 178815 event pairs, 1705 based on Foata normal form. 179/20674 useless extension candidates. Maximal degree in co-relation 61405. Up to 5243 conditions per place. [2022-07-12 10:28:38,923 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 91 selfloop transitions, 58 changer transitions 1/270 dead transitions. [2022-07-12 10:28:38,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 270 transitions, 1169 flow [2022-07-12 10:28:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-07-12 10:28:38,928 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8163636363636364 [2022-07-12 10:28:38,929 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-07-12 10:28:38,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-07-12 10:28:38,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:38,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-07-12 10:28:38,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states 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 10:28:38,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 10:28:38,938 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 10:28:38,938 INFO L186 Difference]: Start difference. First operand has 172 places, 166 transitions, 546 flow. Second operand 10 states and 1347 transitions. [2022-07-12 10:28:38,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 270 transitions, 1169 flow [2022-07-12 10:28:39,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 270 transitions, 1113 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-07-12 10:28:39,071 INFO L242 Difference]: Finished difference. Result has 170 places, 210 transitions, 755 flow [2022-07-12 10:28:39,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=170, PETRI_TRANSITIONS=210} [2022-07-12 10:28:39,072 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 11 predicate places. [2022-07-12 10:28:39,072 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 210 transitions, 755 flow [2022-07-12 10:28:39,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 10:28:39,073 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:39,073 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:39,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:28:39,074 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 3 more)] === [2022-07-12 10:28:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1237697543, now seen corresponding path program 4 times [2022-07-12 10:28:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:39,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682325313] [2022-07-12 10:28:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:39,255 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 10:28:39,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:39,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682325313] [2022-07-12 10:28:39,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682325313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:39,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:39,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:28:39,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393279673] [2022-07-12 10:28:39,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:28:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:28:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:28:39,263 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-12 10:28:39,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 210 transitions, 755 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 10:28:39,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:39,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-12 10:28:39,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:42,740 INFO L129 PetriNetUnfolder]: 19708/36361 cut-off events. [2022-07-12 10:28:42,741 INFO L130 PetriNetUnfolder]: For 35577/40132 co-relation queries the response was YES. [2022-07-12 10:28:42,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102740 conditions, 36361 events. 19708/36361 cut-off events. For 35577/40132 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 351244 event pairs, 3177 based on Foata normal form. 1042/35572 useless extension candidates. Maximal degree in co-relation 70859. Up to 8597 conditions per place. [2022-07-12 10:28:43,273 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 124 selfloop transitions, 93 changer transitions 0/337 dead transitions. [2022-07-12 10:28:43,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 337 transitions, 1732 flow [2022-07-12 10:28:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:28:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:28:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1092 transitions. [2022-07-12 10:28:43,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8272727272727273 [2022-07-12 10:28:43,277 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1092 transitions. [2022-07-12 10:28:43,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1092 transitions. [2022-07-12 10:28:43,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:43,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1092 transitions. [2022-07-12 10:28:43,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.5) internal successors, (1092), 8 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 10:28:43,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states 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 10:28:43,284 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states 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 10:28:43,284 INFO L186 Difference]: Start difference. First operand has 170 places, 210 transitions, 755 flow. Second operand 8 states and 1092 transitions. [2022-07-12 10:28:43,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 337 transitions, 1732 flow [2022-07-12 10:28:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 337 transitions, 1616 flow, removed 53 selfloop flow, removed 3 redundant places. [2022-07-12 10:28:43,349 INFO L242 Difference]: Finished difference. Result has 177 places, 278 transitions, 1369 flow [2022-07-12 10:28:43,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=177, PETRI_TRANSITIONS=278} [2022-07-12 10:28:43,350 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2022-07-12 10:28:43,351 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 278 transitions, 1369 flow [2022-07-12 10:28:43,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 10:28:43,351 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:43,352 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:28:43,352 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 3 more)] === [2022-07-12 10:28:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1248837477, now seen corresponding path program 5 times [2022-07-12 10:28:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:43,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096220456] [2022-07-12 10:28:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:43,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:43,492 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 10:28:43,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:43,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096220456] [2022-07-12 10:28:43,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096220456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:43,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:43,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:28:43,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113947651] [2022-07-12 10:28:43,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:43,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:28:43,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:43,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:28:43,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:28:43,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-12 10:28:43,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 278 transitions, 1369 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 10:28:43,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:43,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-12 10:28:43,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:48,204 INFO L129 PetriNetUnfolder]: 24360/46775 cut-off events. [2022-07-12 10:28:48,204 INFO L130 PetriNetUnfolder]: For 79274/85302 co-relation queries the response was YES. [2022-07-12 10:28:48,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152278 conditions, 46775 events. 24360/46775 cut-off events. For 79274/85302 co-relation queries the response was YES. Maximal size of possible extension queue 2810. Compared 490844 event pairs, 5113 based on Foata normal form. 2184/47293 useless extension candidates. Maximal degree in co-relation 102772. Up to 12620 conditions per place. [2022-07-12 10:28:48,661 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 185 selfloop transitions, 97 changer transitions 0/402 dead transitions. [2022-07-12 10:28:48,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 402 transitions, 2711 flow [2022-07-12 10:28:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:28:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:28:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2022-07-12 10:28:48,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-12 10:28:48,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2022-07-12 10:28:48,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2022-07-12 10:28:48,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:48,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2022-07-12 10:28:48,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states 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 10:28:48,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 10:28:48,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 10:28:48,670 INFO L186 Difference]: Start difference. First operand has 177 places, 278 transitions, 1369 flow. Second operand 7 states and 946 transitions. [2022-07-12 10:28:48,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 402 transitions, 2711 flow [2022-07-12 10:28:49,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 402 transitions, 2680 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-07-12 10:28:49,117 INFO L242 Difference]: Finished difference. Result has 183 places, 347 transitions, 2336 flow [2022-07-12 10:28:49,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2336, PETRI_PLACES=183, PETRI_TRANSITIONS=347} [2022-07-12 10:28:49,119 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 24 predicate places. [2022-07-12 10:28:49,119 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 347 transitions, 2336 flow [2022-07-12 10:28:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 10:28:49,119 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:49,120 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:49,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:28:49,120 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 3 more)] === [2022-07-12 10:28:49,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1915477697, now seen corresponding path program 6 times [2022-07-12 10:28:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:49,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931229862] [2022-07-12 10:28:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:49,259 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 10:28:49,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:49,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931229862] [2022-07-12 10:28:49,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931229862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:49,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:49,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:28:49,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513612603] [2022-07-12 10:28:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:49,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:28:49,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:28:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:28:49,263 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-12 10:28:49,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 347 transitions, 2336 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 10:28:49,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:49,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-12 10:28:49,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:54,528 INFO L129 PetriNetUnfolder]: 24137/44532 cut-off events. [2022-07-12 10:28:54,529 INFO L130 PetriNetUnfolder]: For 145965/156223 co-relation queries the response was YES. [2022-07-12 10:28:54,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171952 conditions, 44532 events. 24137/44532 cut-off events. For 145965/156223 co-relation queries the response was YES. Maximal size of possible extension queue 2696. Compared 446557 event pairs, 4378 based on Foata normal form. 3041/45495 useless extension candidates. Maximal degree in co-relation 97811. Up to 11460 conditions per place. [2022-07-12 10:28:55,031 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 127 selfloop transitions, 188 changer transitions 0/435 dead transitions. [2022-07-12 10:28:55,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 435 transitions, 3496 flow [2022-07-12 10:28:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:28:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:28:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1094 transitions. [2022-07-12 10:28:55,037 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8287878787878787 [2022-07-12 10:28:55,037 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1094 transitions. [2022-07-12 10:28:55,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1094 transitions. [2022-07-12 10:28:55,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:55,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1094 transitions. [2022-07-12 10:28:55,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.75) internal successors, (1094), 8 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states 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 10:28:55,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states 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 10:28:55,046 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states 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 10:28:55,047 INFO L186 Difference]: Start difference. First operand has 183 places, 347 transitions, 2336 flow. Second operand 8 states and 1094 transitions. [2022-07-12 10:28:55,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 435 transitions, 3496 flow [2022-07-12 10:28:55,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 435 transitions, 3482 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-12 10:28:55,525 INFO L242 Difference]: Finished difference. Result has 189 places, 374 transitions, 3029 flow [2022-07-12 10:28:55,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3029, PETRI_PLACES=189, PETRI_TRANSITIONS=374} [2022-07-12 10:28:55,526 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 30 predicate places. [2022-07-12 10:28:55,527 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 374 transitions, 3029 flow [2022-07-12 10:28:55,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 10:28:55,527 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:55,528 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:55,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:28:55,528 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 3 more)] === [2022-07-12 10:28:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -721923245, now seen corresponding path program 7 times [2022-07-12 10:28:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:55,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969024297] [2022-07-12 10:28:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:55,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:55,658 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 10:28:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:55,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969024297] [2022-07-12 10:28:55,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969024297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:55,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:55,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:28:55,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845147707] [2022-07-12 10:28:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:55,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:28:55,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:28:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:28:55,665 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-12 10:28:55,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 374 transitions, 3029 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 10:28:55,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:55,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-12 10:28:55,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:01,276 INFO L129 PetriNetUnfolder]: 23813/45619 cut-off events. [2022-07-12 10:29:01,277 INFO L130 PetriNetUnfolder]: For 197650/204698 co-relation queries the response was YES. [2022-07-12 10:29:01,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190453 conditions, 45619 events. 23813/45619 cut-off events. For 197650/204698 co-relation queries the response was YES. Maximal size of possible extension queue 2707. Compared 476782 event pairs, 5423 based on Foata normal form. 2272/46063 useless extension candidates. Maximal degree in co-relation 128067. Up to 12058 conditions per place. [2022-07-12 10:29:01,833 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 188 selfloop transitions, 143 changer transitions 0/451 dead transitions. [2022-07-12 10:29:01,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 451 transitions, 4279 flow [2022-07-12 10:29:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:29:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:29:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2022-07-12 10:29:01,836 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-07-12 10:29:01,837 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2022-07-12 10:29:01,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2022-07-12 10:29:01,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:01,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2022-07-12 10:29:01,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states 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 10:29:01,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 10:29:01,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 10:29:01,842 INFO L186 Difference]: Start difference. First operand has 189 places, 374 transitions, 3029 flow. Second operand 7 states and 945 transitions. [2022-07-12 10:29:01,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 451 transitions, 4279 flow [2022-07-12 10:29:02,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 451 transitions, 3995 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:29:02,114 INFO L242 Difference]: Finished difference. Result has 192 places, 399 transitions, 3493 flow [2022-07-12 10:29:02,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3493, PETRI_PLACES=192, PETRI_TRANSITIONS=399} [2022-07-12 10:29:02,115 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 33 predicate places. [2022-07-12 10:29:02,115 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 399 transitions, 3493 flow [2022-07-12 10:29:02,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 10:29:02,115 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:02,115 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:29:02,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:29:02,116 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 3 more)] === [2022-07-12 10:29:02,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 184752153, now seen corresponding path program 8 times [2022-07-12 10:29:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511692588] [2022-07-12 10:29:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:02,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:02,220 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 10:29:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:02,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511692588] [2022-07-12 10:29:02,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511692588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:02,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:02,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:29:02,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775667354] [2022-07-12 10:29:02,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:02,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:29:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:02,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:29:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:29:02,223 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-12 10:29:02,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 399 transitions, 3493 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 10:29:02,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:02,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-12 10:29:02,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:29:07,632 INFO L129 PetriNetUnfolder]: 22342/42556 cut-off events. [2022-07-12 10:29:07,632 INFO L130 PetriNetUnfolder]: For 219750/231148 co-relation queries the response was YES. [2022-07-12 10:29:07,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183214 conditions, 42556 events. 22342/42556 cut-off events. For 219750/231148 co-relation queries the response was YES. Maximal size of possible extension queue 2710. Compared 441249 event pairs, 5492 based on Foata normal form. 3581/44093 useless extension candidates. Maximal degree in co-relation 120180. Up to 12311 conditions per place. [2022-07-12 10:29:08,126 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 186 selfloop transitions, 180 changer transitions 1/485 dead transitions. [2022-07-12 10:29:08,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 485 transitions, 5058 flow [2022-07-12 10:29:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:29:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:29:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-07-12 10:29:08,129 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2022-07-12 10:29:08,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-07-12 10:29:08,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-07-12 10:29:08,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:29:08,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-07-12 10:29:08,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 10:29:08,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 10:29:08,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 10:29:08,137 INFO L186 Difference]: Start difference. First operand has 192 places, 399 transitions, 3493 flow. Second operand 7 states and 947 transitions. [2022-07-12 10:29:08,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 485 transitions, 5058 flow [2022-07-12 10:29:08,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 485 transitions, 4864 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:29:08,578 INFO L242 Difference]: Finished difference. Result has 196 places, 435 transitions, 4403 flow [2022-07-12 10:29:08,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4403, PETRI_PLACES=196, PETRI_TRANSITIONS=435} [2022-07-12 10:29:08,579 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 37 predicate places. [2022-07-12 10:29:08,579 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 435 transitions, 4403 flow [2022-07-12 10:29:08,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 10:29:08,580 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:29:08,580 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:29:08,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:29:08,580 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 3 more)] === [2022-07-12 10:29:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:29:08,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1865309069, now seen corresponding path program 9 times [2022-07-12 10:29:08,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:29:08,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686622028] [2022-07-12 10:29:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:29:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:29:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:29:08,689 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 10:29:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:29:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686622028] [2022-07-12 10:29:08,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686622028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:29:08,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:29:08,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:29:08,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839782811] [2022-07-12 10:29:08,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:29:08,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:29:08,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:29:08,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:29:08,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:29:08,693 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-12 10:29:08,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 435 transitions, 4403 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 10:29:08,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:29:08,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-12 10:29:08,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand