./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/pthread-wmm/safe035_power.i -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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:12:18,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:12:18,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:12:18,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:12:18,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:12:18,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:12:18,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:12:18,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:12:18,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:12:18,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:12:18,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:12:18,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:12:18,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:12:18,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:12:18,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:12:18,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:12:18,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:12:18,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:12:18,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:12:18,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:12:18,588 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:12:18,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:12:18,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:12:18,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:12:18,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:12:18,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:12:18,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:12:18,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:12:18,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:12:18,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:12:18,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:12:18,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:12:18,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:12:18,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:12:18,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:12:18,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:12:18,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:12:18,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:12:18,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:12:18,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:12:18,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:12:18,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:12:18,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:12:18,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:12:18,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:12:18,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:12:18,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:12:18,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:12:18,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:12:18,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:12:18,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:12:18,621 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:12:18,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:12:18,622 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:12:18,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:12:18,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:12:18,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:12:18,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:12:18,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:12:18,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:12:18,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:12:18,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:12:18,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:12:18,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:12:18,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:12:18,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:12:18,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:12:18,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:12:18,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:12:18,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:12:18,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:12:18,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:12:18,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:12:18,625 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:12:18,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:12:18,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:12:18,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2022-07-19 21:12:18,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:12:18,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:12:18,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:12:18,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:12:18,882 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:12:18,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-07-19 21:12:18,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda449b93/7810e4656a084e6f87796c47fd27dd1b/FLAG8fc3a9bc0 [2022-07-19 21:12:19,367 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:12:19,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-07-19 21:12:19,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda449b93/7810e4656a084e6f87796c47fd27dd1b/FLAG8fc3a9bc0 [2022-07-19 21:12:19,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda449b93/7810e4656a084e6f87796c47fd27dd1b [2022-07-19 21:12:19,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:12:19,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:12:19,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:12:19,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:12:19,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:12:19,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:19" (1/1) ... [2022-07-19 21:12:19,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec64ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:19, skipping insertion in model container [2022-07-19 21:12:19,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:12:19" (1/1) ... [2022-07-19 21:12:19,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:12:19,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:12:19,957 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/pthread-wmm/safe035_power.i[947,960] [2022-07-19 21:12:20,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:12:20,225 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:12:20,233 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/pthread-wmm/safe035_power.i[947,960] [2022-07-19 21:12:20,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:12:20,338 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:12:20,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20 WrapperNode [2022-07-19 21:12:20,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:12:20,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:12:20,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:12:20,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:12:20,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,423 INFO L137 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 484 [2022-07-19 21:12:20,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:12:20,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:12:20,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:12:20,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:12:20,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:12:20,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:12:20,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:12:20,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:12:20,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (1/1) ... [2022-07-19 21:12:20,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:12:20,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:12:20,529 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) [2022-07-19 21:12:20,536 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 [2022-07-19 21:12:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:12:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:12:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:12:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:12:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:12:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:12:20,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:12:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:12:20,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:12:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:12:20,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:12:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:12:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:12:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:12:20,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:12:20,572 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:12:20,704 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:12:20,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:12:21,686 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:12:22,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:12:22,307 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:12:22,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:22 BoogieIcfgContainer [2022-07-19 21:12:22,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:12:22,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:12:22,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:12:22,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:12:22,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:12:19" (1/3) ... [2022-07-19 21:12:22,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea2ca34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:22, skipping insertion in model container [2022-07-19 21:12:22,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:12:20" (2/3) ... [2022-07-19 21:12:22,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea2ca34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:12:22, skipping insertion in model container [2022-07-19 21:12:22,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:22" (3/3) ... [2022-07-19 21:12:22,319 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-07-19 21:12:22,326 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:12:22,334 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:12:22,335 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:12:22,335 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:12:22,413 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:12:22,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2022-07-19 21:12:22,538 INFO L129 PetriNetUnfolder]: 2/116 cut-off events. [2022-07-19 21:12:22,538 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:22,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-07-19 21:12:22,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 253 flow [2022-07-19 21:12:22,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 116 transitions, 241 flow [2022-07-19 21:12:22,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:12:22,570 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@2e41e823, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13eb9c64 [2022-07-19 21:12:22,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-19 21:12:22,596 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2022-07-19 21:12:22,596 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:12:22,596 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:22,597 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:12:22,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:22,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:22,602 INFO L85 PathProgramCache]: Analyzing trace with hash 159138810, now seen corresponding path program 1 times [2022-07-19 21:12:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:22,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50776649] [2022-07-19 21:12:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:22,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:22,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50776649] [2022-07-19 21:12:22,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50776649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:22,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:22,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:12:22,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478486129] [2022-07-19 21:12:22,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:22,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:12:22,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:12:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:12:22,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 119 [2022-07-19 21:12:22,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:22,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:22,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 119 [2022-07-19 21:12:22,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:23,493 INFO L129 PetriNetUnfolder]: 359/1823 cut-off events. [2022-07-19 21:12:23,494 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-19 21:12:23,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1823 events. 359/1823 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15996 event pairs, 131 based on Foata normal form. 92/1812 useless extension candidates. Maximal degree in co-relation 2362. Up to 445 conditions per place. [2022-07-19 21:12:23,513 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 20 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2022-07-19 21:12:23,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 291 flow [2022-07-19 21:12:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:12:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:12:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2022-07-19 21:12:23,528 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9159663865546218 [2022-07-19 21:12:23,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2022-07-19 21:12:23,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2022-07-19 21:12:23,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:23,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2022-07-19 21:12:23,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,547 INFO L186 Difference]: Start difference. First operand has 124 places, 116 transitions, 241 flow. Second operand 3 states and 327 transitions. [2022-07-19 21:12:23,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 291 flow [2022-07-19 21:12:23,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:12:23,556 INFO L242 Difference]: Finished difference. Result has 121 places, 112 transitions, 234 flow [2022-07-19 21:12:23,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2022-07-19 21:12:23,564 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, -3 predicate places. [2022-07-19 21:12:23,564 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 234 flow [2022-07-19 21:12:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,565 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:23,566 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] [2022-07-19 21:12:23,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:12:23,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1597697283, now seen corresponding path program 1 times [2022-07-19 21:12:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:23,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637984479] [2022-07-19 21:12:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:23,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:23,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:23,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637984479] [2022-07-19 21:12:23,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637984479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:23,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:23,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:12:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095261965] [2022-07-19 21:12:23,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:23,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:12:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:12:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:12:23,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 119 [2022-07-19 21:12:23,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:23,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:23,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 119 [2022-07-19 21:12:23,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:24,901 INFO L129 PetriNetUnfolder]: 1143/2848 cut-off events. [2022-07-19 21:12:24,902 INFO L130 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-07-19 21:12:24,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 2848 events. 1143/2848 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22055 event pairs, 206 based on Foata normal form. 0/2781 useless extension candidates. Maximal degree in co-relation 4639. Up to 561 conditions per place. [2022-07-19 21:12:24,917 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 24 selfloop transitions, 2 changer transitions 63/169 dead transitions. [2022-07-19 21:12:24,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 510 flow [2022-07-19 21:12:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:12:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:12:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 926 transitions. [2022-07-19 21:12:24,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8646125116713352 [2022-07-19 21:12:24,925 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 926 transitions. [2022-07-19 21:12:24,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 926 transitions. [2022-07-19 21:12:24,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:24,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 926 transitions. [2022-07-19 21:12:24,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:24,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:24,935 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:24,935 INFO L186 Difference]: Start difference. First operand has 121 places, 112 transitions, 234 flow. Second operand 9 states and 926 transitions. [2022-07-19 21:12:24,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 510 flow [2022-07-19 21:12:24,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 169 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:12:24,941 INFO L242 Difference]: Finished difference. Result has 134 places, 100 transitions, 226 flow [2022-07-19 21:12:24,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=226, PETRI_PLACES=134, PETRI_TRANSITIONS=100} [2022-07-19 21:12:24,942 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-07-19 21:12:24,943 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 100 transitions, 226 flow [2022-07-19 21:12:24,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:24,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:24,944 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] [2022-07-19 21:12:24,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:12:24,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1540814522, now seen corresponding path program 1 times [2022-07-19 21:12:24,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:24,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541769733] [2022-07-19 21:12:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:25,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541769733] [2022-07-19 21:12:25,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541769733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:25,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:25,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685814571] [2022-07-19 21:12:25,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:25,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:25,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:25,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:25,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:25,329 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-19 21:12:25,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 100 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:25,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:25,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-19 21:12:25,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:26,203 INFO L129 PetriNetUnfolder]: 1189/2301 cut-off events. [2022-07-19 21:12:26,203 INFO L130 PetriNetUnfolder]: For 478/478 co-relation queries the response was YES. [2022-07-19 21:12:26,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 2301 events. 1189/2301 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14137 event pairs, 463 based on Foata normal form. 47/2261 useless extension candidates. Maximal degree in co-relation 4659. Up to 1134 conditions per place. [2022-07-19 21:12:26,220 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 26 selfloop transitions, 15 changer transitions 49/166 dead transitions. [2022-07-19 21:12:26,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 166 transitions, 559 flow [2022-07-19 21:12:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:12:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:12:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 992 transitions. [2022-07-19 21:12:26,224 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8336134453781513 [2022-07-19 21:12:26,224 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 992 transitions. [2022-07-19 21:12:26,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 992 transitions. [2022-07-19 21:12:26,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:26,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 992 transitions. [2022-07-19 21:12:26,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 99.2) internal successors, (992), 10 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:26,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:26,231 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:26,231 INFO L186 Difference]: Start difference. First operand has 134 places, 100 transitions, 226 flow. Second operand 10 states and 992 transitions. [2022-07-19 21:12:26,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 166 transitions, 559 flow [2022-07-19 21:12:26,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 166 transitions, 525 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-19 21:12:26,271 INFO L242 Difference]: Finished difference. Result has 125 places, 114 transitions, 328 flow [2022-07-19 21:12:26,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2022-07-19 21:12:26,273 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2022-07-19 21:12:26,273 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 328 flow [2022-07-19 21:12:26,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:26,273 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:26,274 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] [2022-07-19 21:12:26,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:12:26,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2103791456, now seen corresponding path program 2 times [2022-07-19 21:12:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:26,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294522455] [2022-07-19 21:12:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:26,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294522455] [2022-07-19 21:12:26,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294522455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:26,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:26,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:12:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648349287] [2022-07-19 21:12:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:26,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:12:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:12:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:12:26,716 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2022-07-19 21:12:26,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 328 flow. Second operand has 9 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:26,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:26,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2022-07-19 21:12:26,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:27,772 INFO L129 PetriNetUnfolder]: 1238/2387 cut-off events. [2022-07-19 21:12:27,772 INFO L130 PetriNetUnfolder]: For 3954/8090 co-relation queries the response was YES. [2022-07-19 21:12:27,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7758 conditions, 2387 events. 1238/2387 cut-off events. For 3954/8090 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14887 event pairs, 403 based on Foata normal form. 53/2353 useless extension candidates. Maximal degree in co-relation 7692. Up to 1129 conditions per place. [2022-07-19 21:12:27,795 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 29 selfloop transitions, 26 changer transitions 49/178 dead transitions. [2022-07-19 21:12:27,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 178 transitions, 887 flow [2022-07-19 21:12:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:12:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:12:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1062 transitions. [2022-07-19 21:12:27,799 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8113063407181055 [2022-07-19 21:12:27,799 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1062 transitions. [2022-07-19 21:12:27,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1062 transitions. [2022-07-19 21:12:27,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:27,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1062 transitions. [2022-07-19 21:12:27,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 96.54545454545455) internal successors, (1062), 11 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,806 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,806 INFO L186 Difference]: Start difference. First operand has 125 places, 114 transitions, 328 flow. Second operand 11 states and 1062 transitions. [2022-07-19 21:12:27,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 178 transitions, 887 flow [2022-07-19 21:12:27,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 178 transitions, 873 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-07-19 21:12:27,816 INFO L242 Difference]: Finished difference. Result has 134 places, 126 transitions, 503 flow [2022-07-19 21:12:27,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2022-07-19 21:12:27,817 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-07-19 21:12:27,817 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 503 flow [2022-07-19 21:12:27,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:27,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:27,818 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] [2022-07-19 21:12:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:12:27,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1885551681, now seen corresponding path program 1 times [2022-07-19 21:12:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282497289] [2022-07-19 21:12:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:28,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282497289] [2022-07-19 21:12:28,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282497289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:28,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:28,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 21:12:28,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938101857] [2022-07-19 21:12:28,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:28,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:12:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:12:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:12:28,583 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2022-07-19 21:12:28,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 126 transitions, 503 flow. Second operand has 15 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:28,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:28,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2022-07-19 21:12:28,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:30,396 INFO L129 PetriNetUnfolder]: 1103/2171 cut-off events. [2022-07-19 21:12:30,397 INFO L130 PetriNetUnfolder]: For 9534/13715 co-relation queries the response was YES. [2022-07-19 21:12:30,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9275 conditions, 2171 events. 1103/2171 cut-off events. For 9534/13715 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13221 event pairs, 379 based on Foata normal form. 35/2082 useless extension candidates. Maximal degree in co-relation 9198. Up to 1415 conditions per place. [2022-07-19 21:12:30,425 INFO L132 encePairwiseOnDemand]: 98/119 looper letters, 55 selfloop transitions, 69 changer transitions 45/239 dead transitions. [2022-07-19 21:12:30,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 239 transitions, 1751 flow [2022-07-19 21:12:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:12:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:12:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1715 transitions. [2022-07-19 21:12:30,430 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585139318885449 [2022-07-19 21:12:30,430 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1715 transitions. [2022-07-19 21:12:30,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1715 transitions. [2022-07-19 21:12:30,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:30,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1715 transitions. [2022-07-19 21:12:30,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 90.26315789473684) internal successors, (1715), 19 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,439 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,439 INFO L186 Difference]: Start difference. First operand has 134 places, 126 transitions, 503 flow. Second operand 19 states and 1715 transitions. [2022-07-19 21:12:30,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 239 transitions, 1751 flow [2022-07-19 21:12:30,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 239 transitions, 1512 flow, removed 119 selfloop flow, removed 7 redundant places. [2022-07-19 21:12:30,455 INFO L242 Difference]: Finished difference. Result has 149 places, 190 transitions, 1178 flow [2022-07-19 21:12:30,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1178, PETRI_PLACES=149, PETRI_TRANSITIONS=190} [2022-07-19 21:12:30,456 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 25 predicate places. [2022-07-19 21:12:30,456 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 190 transitions, 1178 flow [2022-07-19 21:12:30,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,457 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:30,457 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] [2022-07-19 21:12:30,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:12:30,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1613135911, now seen corresponding path program 2 times [2022-07-19 21:12:30,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:30,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572073628] [2022-07-19 21:12:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:30,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:30,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572073628] [2022-07-19 21:12:30,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572073628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:30,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:30,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 21:12:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453375567] [2022-07-19 21:12:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:30,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:12:30,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:30,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:12:30,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:12:30,862 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-19 21:12:30,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 190 transitions, 1178 flow. Second operand has 12 states, 12 states have (on average 87.83333333333333) internal successors, (1054), 12 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:30,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:30,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-19 21:12:30,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:32,308 INFO L129 PetriNetUnfolder]: 1766/3357 cut-off events. [2022-07-19 21:12:32,308 INFO L130 PetriNetUnfolder]: For 15511/65699 co-relation queries the response was YES. [2022-07-19 21:12:32,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15927 conditions, 3357 events. 1766/3357 cut-off events. For 15511/65699 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22607 event pairs, 345 based on Foata normal form. 92/3336 useless extension candidates. Maximal degree in co-relation 15842. Up to 1642 conditions per place. [2022-07-19 21:12:32,344 INFO L132 encePairwiseOnDemand]: 104/119 looper letters, 103 selfloop transitions, 41 changer transitions 75/291 dead transitions. [2022-07-19 21:12:32,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 291 transitions, 2529 flow [2022-07-19 21:12:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:12:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:12:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1232 transitions. [2022-07-19 21:12:32,348 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7963800904977375 [2022-07-19 21:12:32,348 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1232 transitions. [2022-07-19 21:12:32,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1232 transitions. [2022-07-19 21:12:32,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:32,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1232 transitions. [2022-07-19 21:12:32,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 94.76923076923077) internal successors, (1232), 13 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:32,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:32,354 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:32,354 INFO L186 Difference]: Start difference. First operand has 149 places, 190 transitions, 1178 flow. Second operand 13 states and 1232 transitions. [2022-07-19 21:12:32,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 291 transitions, 2529 flow [2022-07-19 21:12:32,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 291 transitions, 2367 flow, removed 77 selfloop flow, removed 7 redundant places. [2022-07-19 21:12:32,389 INFO L242 Difference]: Finished difference. Result has 156 places, 185 transitions, 1138 flow [2022-07-19 21:12:32,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1138, PETRI_PLACES=156, PETRI_TRANSITIONS=185} [2022-07-19 21:12:32,390 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 32 predicate places. [2022-07-19 21:12:32,390 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 185 transitions, 1138 flow [2022-07-19 21:12:32,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.83333333333333) internal successors, (1054), 12 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:32,390 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:32,390 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] [2022-07-19 21:12:32,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:12:32,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash 836580793, now seen corresponding path program 1 times [2022-07-19 21:12:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:32,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206671853] [2022-07-19 21:12:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:32,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:32,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:32,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206671853] [2022-07-19 21:12:32,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206671853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:32,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:32,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 21:12:32,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257436679] [2022-07-19 21:12:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:12:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:12:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:12:32,612 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2022-07-19 21:12:32,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 185 transitions, 1138 flow. Second operand has 12 states, 12 states have (on average 88.75) internal successors, (1065), 12 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:32,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:32,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2022-07-19 21:12:32,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:34,073 INFO L129 PetriNetUnfolder]: 1689/3293 cut-off events. [2022-07-19 21:12:34,074 INFO L130 PetriNetUnfolder]: For 17966/46458 co-relation queries the response was YES. [2022-07-19 21:12:34,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16214 conditions, 3293 events. 1689/3293 cut-off events. For 17966/46458 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22525 event pairs, 205 based on Foata normal form. 119/3313 useless extension candidates. Maximal degree in co-relation 16126. Up to 1658 conditions per place. [2022-07-19 21:12:34,108 INFO L132 encePairwiseOnDemand]: 101/119 looper letters, 130 selfloop transitions, 44 changer transitions 68/315 dead transitions. [2022-07-19 21:12:34,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 315 transitions, 2749 flow [2022-07-19 21:12:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:12:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:12:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1799 transitions. [2022-07-19 21:12:34,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7956656346749226 [2022-07-19 21:12:34,114 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1799 transitions. [2022-07-19 21:12:34,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1799 transitions. [2022-07-19 21:12:34,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:34,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1799 transitions. [2022-07-19 21:12:34,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 94.6842105263158) internal successors, (1799), 19 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,124 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,124 INFO L186 Difference]: Start difference. First operand has 156 places, 185 transitions, 1138 flow. Second operand 19 states and 1799 transitions. [2022-07-19 21:12:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 315 transitions, 2749 flow [2022-07-19 21:12:34,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 315 transitions, 2581 flow, removed 51 selfloop flow, removed 10 redundant places. [2022-07-19 21:12:34,177 INFO L242 Difference]: Finished difference. Result has 167 places, 183 transitions, 1184 flow [2022-07-19 21:12:34,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1184, PETRI_PLACES=167, PETRI_TRANSITIONS=183} [2022-07-19 21:12:34,178 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 43 predicate places. [2022-07-19 21:12:34,178 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 183 transitions, 1184 flow [2022-07-19 21:12:34,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.75) internal successors, (1065), 12 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,179 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:34,179 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] [2022-07-19 21:12:34,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:12:34,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1676887911, now seen corresponding path program 2 times [2022-07-19 21:12:34,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:34,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784717831] [2022-07-19 21:12:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784717831] [2022-07-19 21:12:34,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784717831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:34,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:34,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:12:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932173622] [2022-07-19 21:12:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:34,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:12:34,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:12:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:12:34,306 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-19 21:12:34,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 183 transitions, 1184 flow. Second operand has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:34,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:34,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-19 21:12:34,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:36,419 INFO L129 PetriNetUnfolder]: 6768/12405 cut-off events. [2022-07-19 21:12:36,419 INFO L130 PetriNetUnfolder]: For 115595/115955 co-relation queries the response was YES. [2022-07-19 21:12:36,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57319 conditions, 12405 events. 6768/12405 cut-off events. For 115595/115955 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 101493 event pairs, 351 based on Foata normal form. 208/12419 useless extension candidates. Maximal degree in co-relation 57233. Up to 3727 conditions per place. [2022-07-19 21:12:36,525 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 141 selfloop transitions, 7 changer transitions 184/420 dead transitions. [2022-07-19 21:12:36,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 420 transitions, 4256 flow [2022-07-19 21:12:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:12:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:12:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1022 transitions. [2022-07-19 21:12:36,534 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-19 21:12:36,534 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1022 transitions. [2022-07-19 21:12:36,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1022 transitions. [2022-07-19 21:12:36,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:36,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1022 transitions. [2022-07-19 21:12:36,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,542 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,542 INFO L186 Difference]: Start difference. First operand has 167 places, 183 transitions, 1184 flow. Second operand 10 states and 1022 transitions. [2022-07-19 21:12:36,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 420 transitions, 4256 flow [2022-07-19 21:12:36,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 420 transitions, 3922 flow, removed 98 selfloop flow, removed 11 redundant places. [2022-07-19 21:12:36,654 INFO L242 Difference]: Finished difference. Result has 163 places, 168 transitions, 988 flow [2022-07-19 21:12:36,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=163, PETRI_TRANSITIONS=168} [2022-07-19 21:12:36,658 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 39 predicate places. [2022-07-19 21:12:36,658 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 168 transitions, 988 flow [2022-07-19 21:12:36,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,659 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:36,659 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] [2022-07-19 21:12:36,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:12:36,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1139462990, now seen corresponding path program 1 times [2022-07-19 21:12:36,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:36,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636260732] [2022-07-19 21:12:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:36,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:36,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636260732] [2022-07-19 21:12:36,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636260732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:36,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:36,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836122841] [2022-07-19 21:12:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:36,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:36,805 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-19 21:12:36,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 168 transitions, 988 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:36,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:36,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-19 21:12:36,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:38,312 INFO L129 PetriNetUnfolder]: 2880/6286 cut-off events. [2022-07-19 21:12:38,312 INFO L130 PetriNetUnfolder]: For 45688/45801 co-relation queries the response was YES. [2022-07-19 21:12:38,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29500 conditions, 6286 events. 2880/6286 cut-off events. For 45688/45801 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 54003 event pairs, 347 based on Foata normal form. 239/6512 useless extension candidates. Maximal degree in co-relation 29413. Up to 1724 conditions per place. [2022-07-19 21:12:38,349 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 135 selfloop transitions, 18 changer transitions 94/334 dead transitions. [2022-07-19 21:12:38,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 334 transitions, 3191 flow [2022-07-19 21:12:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:12:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:12:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-07-19 21:12:38,355 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8601986249045073 [2022-07-19 21:12:38,355 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-07-19 21:12:38,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-07-19 21:12:38,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:38,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-07-19 21:12:38,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,364 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,364 INFO L186 Difference]: Start difference. First operand has 163 places, 168 transitions, 988 flow. Second operand 11 states and 1126 transitions. [2022-07-19 21:12:38,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 334 transitions, 3191 flow [2022-07-19 21:12:38,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 334 transitions, 3175 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-19 21:12:38,426 INFO L242 Difference]: Finished difference. Result has 171 places, 169 transitions, 1049 flow [2022-07-19 21:12:38,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1049, PETRI_PLACES=171, PETRI_TRANSITIONS=169} [2022-07-19 21:12:38,428 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 47 predicate places. [2022-07-19 21:12:38,428 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 169 transitions, 1049 flow [2022-07-19 21:12:38,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,428 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:38,429 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] [2022-07-19 21:12:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:12:38,429 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash 436664984, now seen corresponding path program 1 times [2022-07-19 21:12:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:38,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381616023] [2022-07-19 21:12:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:38,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:38,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381616023] [2022-07-19 21:12:38,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381616023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:38,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:38,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 21:12:38,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259685180] [2022-07-19 21:12:38,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:12:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:12:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:12:38,883 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-19 21:12:38,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 169 transitions, 1049 flow. Second operand has 15 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:38,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:38,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-19 21:12:38,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:39,943 INFO L129 PetriNetUnfolder]: 791/3601 cut-off events. [2022-07-19 21:12:39,944 INFO L130 PetriNetUnfolder]: For 14818/15864 co-relation queries the response was YES. [2022-07-19 21:12:39,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 3601 events. 791/3601 cut-off events. For 14818/15864 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 40008 event pairs, 85 based on Foata normal form. 18/3426 useless extension candidates. Maximal degree in co-relation 13963. Up to 874 conditions per place. [2022-07-19 21:12:39,978 INFO L132 encePairwiseOnDemand]: 104/119 looper letters, 81 selfloop transitions, 20 changer transitions 33/225 dead transitions. [2022-07-19 21:12:39,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 225 transitions, 1985 flow [2022-07-19 21:12:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:12:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:12:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1111 transitions. [2022-07-19 21:12:39,982 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780112044817927 [2022-07-19 21:12:39,982 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1111 transitions. [2022-07-19 21:12:39,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1111 transitions. [2022-07-19 21:12:39,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:39,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1111 transitions. [2022-07-19 21:12:39,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.58333333333333) internal successors, (1111), 12 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,989 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:39,989 INFO L186 Difference]: Start difference. First operand has 171 places, 169 transitions, 1049 flow. Second operand 12 states and 1111 transitions. [2022-07-19 21:12:39,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 225 transitions, 1985 flow [2022-07-19 21:12:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 225 transitions, 1871 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-07-19 21:12:40,093 INFO L242 Difference]: Finished difference. Result has 183 places, 181 transitions, 1183 flow [2022-07-19 21:12:40,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1183, PETRI_PLACES=183, PETRI_TRANSITIONS=181} [2022-07-19 21:12:40,095 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 59 predicate places. [2022-07-19 21:12:40,095 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 181 transitions, 1183 flow [2022-07-19 21:12:40,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:40,096 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:40,097 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] [2022-07-19 21:12:40,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:12:40,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash 663213080, now seen corresponding path program 2 times [2022-07-19 21:12:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:40,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043550365] [2022-07-19 21:12:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:40,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:40,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043550365] [2022-07-19 21:12:40,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043550365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:40,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:40,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 21:12:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811866397] [2022-07-19 21:12:40,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:40,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:12:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:12:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:12:40,775 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2022-07-19 21:12:40,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 181 transitions, 1183 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:40,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:40,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2022-07-19 21:12:40,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:42,260 INFO L129 PetriNetUnfolder]: 937/4507 cut-off events. [2022-07-19 21:12:42,261 INFO L130 PetriNetUnfolder]: For 16243/16527 co-relation queries the response was YES. [2022-07-19 21:12:42,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15943 conditions, 4507 events. 937/4507 cut-off events. For 16243/16527 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 53214 event pairs, 96 based on Foata normal form. 33/4325 useless extension candidates. Maximal degree in co-relation 15834. Up to 606 conditions per place. [2022-07-19 21:12:42,291 INFO L132 encePairwiseOnDemand]: 102/119 looper letters, 74 selfloop transitions, 42 changer transitions 35/240 dead transitions. [2022-07-19 21:12:42,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 240 transitions, 2305 flow [2022-07-19 21:12:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:12:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:12:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1435 transitions. [2022-07-19 21:12:42,295 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7536764705882353 [2022-07-19 21:12:42,295 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1435 transitions. [2022-07-19 21:12:42,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1435 transitions. [2022-07-19 21:12:42,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:42,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1435 transitions. [2022-07-19 21:12:42,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 89.6875) internal successors, (1435), 16 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:42,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:42,302 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:42,302 INFO L186 Difference]: Start difference. First operand has 183 places, 181 transitions, 1183 flow. Second operand 16 states and 1435 transitions. [2022-07-19 21:12:42,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 240 transitions, 2305 flow [2022-07-19 21:12:42,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 240 transitions, 2236 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-07-19 21:12:42,364 INFO L242 Difference]: Finished difference. Result has 198 places, 194 transitions, 1496 flow [2022-07-19 21:12:42,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1496, PETRI_PLACES=198, PETRI_TRANSITIONS=194} [2022-07-19 21:12:42,365 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 74 predicate places. [2022-07-19 21:12:42,365 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 194 transitions, 1496 flow [2022-07-19 21:12:42,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:42,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:42,366 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] [2022-07-19 21:12:42,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:12:42,366 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash 309575666, now seen corresponding path program 3 times [2022-07-19 21:12:42,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:42,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807573302] [2022-07-19 21:12:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:42,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:42,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:42,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807573302] [2022-07-19 21:12:42,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807573302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:42,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:42,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 21:12:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600115570] [2022-07-19 21:12:42,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:42,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:12:42,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:42,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:12:42,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:12:42,928 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2022-07-19 21:12:42,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 194 transitions, 1496 flow. Second operand has 16 states, 16 states have (on average 84.75) internal successors, (1356), 16 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:42,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:42,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2022-07-19 21:12:42,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:43,884 INFO L129 PetriNetUnfolder]: 836/4049 cut-off events. [2022-07-19 21:12:43,885 INFO L130 PetriNetUnfolder]: For 18865/19108 co-relation queries the response was YES. [2022-07-19 21:12:43,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15255 conditions, 4049 events. 836/4049 cut-off events. For 18865/19108 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 46822 event pairs, 112 based on Foata normal form. 22/3872 useless extension candidates. Maximal degree in co-relation 15136. Up to 501 conditions per place. [2022-07-19 21:12:43,928 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 78 selfloop transitions, 32 changer transitions 30/228 dead transitions. [2022-07-19 21:12:43,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 228 transitions, 2349 flow [2022-07-19 21:12:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:12:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:12:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 988 transitions. [2022-07-19 21:12:43,931 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7547746371275783 [2022-07-19 21:12:43,931 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 988 transitions. [2022-07-19 21:12:43,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 988 transitions. [2022-07-19 21:12:43,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:43,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 988 transitions. [2022-07-19 21:12:43,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.81818181818181) internal successors, (988), 11 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:43,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:43,936 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:43,936 INFO L186 Difference]: Start difference. First operand has 198 places, 194 transitions, 1496 flow. Second operand 11 states and 988 transitions. [2022-07-19 21:12:43,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 228 transitions, 2349 flow [2022-07-19 21:12:44,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 228 transitions, 2230 flow, removed 56 selfloop flow, removed 11 redundant places. [2022-07-19 21:12:44,013 INFO L242 Difference]: Finished difference. Result has 194 places, 189 transitions, 1431 flow [2022-07-19 21:12:44,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2022-07-19 21:12:44,014 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 70 predicate places. [2022-07-19 21:12:44,014 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 1431 flow [2022-07-19 21:12:44,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.75) internal successors, (1356), 16 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:44,015 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:44,015 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] [2022-07-19 21:12:44,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:12:44,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash 747727608, now seen corresponding path program 4 times [2022-07-19 21:12:44,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:44,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781916739] [2022-07-19 21:12:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:44,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781916739] [2022-07-19 21:12:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781916739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:44,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:44,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:12:44,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608869721] [2022-07-19 21:12:44,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:44,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:12:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:12:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:12:44,168 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-19 21:12:44,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 1431 flow. Second operand has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:44,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:44,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-19 21:12:44,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:45,535 INFO L129 PetriNetUnfolder]: 2792/6664 cut-off events. [2022-07-19 21:12:45,535 INFO L130 PetriNetUnfolder]: For 66023/66144 co-relation queries the response was YES. [2022-07-19 21:12:45,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34128 conditions, 6664 events. 2792/6664 cut-off events. For 66023/66144 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 63294 event pairs, 349 based on Foata normal form. 108/6758 useless extension candidates. Maximal degree in co-relation 34073. Up to 1455 conditions per place. [2022-07-19 21:12:45,587 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 150 selfloop transitions, 22 changer transitions 117/379 dead transitions. [2022-07-19 21:12:45,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 379 transitions, 4516 flow [2022-07-19 21:12:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:12:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:12:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1375 transitions. [2022-07-19 21:12:45,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8253301320528211 [2022-07-19 21:12:45,590 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1375 transitions. [2022-07-19 21:12:45,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1375 transitions. [2022-07-19 21:12:45,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:45,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1375 transitions. [2022-07-19 21:12:45,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 98.21428571428571) internal successors, (1375), 14 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:45,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:45,596 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:45,596 INFO L186 Difference]: Start difference. First operand has 194 places, 189 transitions, 1431 flow. Second operand 14 states and 1375 transitions. [2022-07-19 21:12:45,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 379 transitions, 4516 flow [2022-07-19 21:12:45,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 379 transitions, 4020 flow, removed 149 selfloop flow, removed 14 redundant places. [2022-07-19 21:12:45,736 INFO L242 Difference]: Finished difference. Result has 197 places, 189 transitions, 1334 flow [2022-07-19 21:12:45,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1334, PETRI_PLACES=197, PETRI_TRANSITIONS=189} [2022-07-19 21:12:45,737 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 73 predicate places. [2022-07-19 21:12:45,737 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 189 transitions, 1334 flow [2022-07-19 21:12:45,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:45,737 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:45,737 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] [2022-07-19 21:12:45,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:12:45,738 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:45,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1332442293, now seen corresponding path program 1 times [2022-07-19 21:12:45,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:45,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348265484] [2022-07-19 21:12:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:45,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:46,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348265484] [2022-07-19 21:12:46,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348265484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:46,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:46,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 21:12:46,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921350544] [2022-07-19 21:12:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:46,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:12:46,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:12:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:12:46,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-19 21:12:46,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 189 transitions, 1334 flow. Second operand has 15 states, 15 states have (on average 87.86666666666666) internal successors, (1318), 15 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:46,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:46,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-19 21:12:46,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:47,347 INFO L129 PetriNetUnfolder]: 862/4983 cut-off events. [2022-07-19 21:12:47,347 INFO L130 PetriNetUnfolder]: For 19218/19707 co-relation queries the response was YES. [2022-07-19 21:12:47,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17936 conditions, 4983 events. 862/4983 cut-off events. For 19218/19707 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 65297 event pairs, 49 based on Foata normal form. 5/4712 useless extension candidates. Maximal degree in co-relation 17824. Up to 670 conditions per place. [2022-07-19 21:12:47,387 INFO L132 encePairwiseOnDemand]: 102/119 looper letters, 75 selfloop transitions, 30 changer transitions 52/249 dead transitions. [2022-07-19 21:12:47,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 249 transitions, 2353 flow [2022-07-19 21:12:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:12:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:12:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1629 transitions. [2022-07-19 21:12:47,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7605042016806722 [2022-07-19 21:12:47,390 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1629 transitions. [2022-07-19 21:12:47,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1629 transitions. [2022-07-19 21:12:47,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:47,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1629 transitions. [2022-07-19 21:12:47,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.5) internal successors, (1629), 18 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:47,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 119.0) internal successors, (2261), 19 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:47,395 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 119.0) internal successors, (2261), 19 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:47,396 INFO L186 Difference]: Start difference. First operand has 197 places, 189 transitions, 1334 flow. Second operand 18 states and 1629 transitions. [2022-07-19 21:12:47,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 249 transitions, 2353 flow [2022-07-19 21:12:47,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 249 transitions, 2010 flow, removed 138 selfloop flow, removed 20 redundant places. [2022-07-19 21:12:47,552 INFO L242 Difference]: Finished difference. Result has 200 places, 185 transitions, 1214 flow [2022-07-19 21:12:47,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1214, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2022-07-19 21:12:47,553 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 76 predicate places. [2022-07-19 21:12:47,554 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 1214 flow [2022-07-19 21:12:47,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.86666666666666) internal successors, (1318), 15 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:47,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:47,554 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] [2022-07-19 21:12:47,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:12:47,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash -320443777, now seen corresponding path program 2 times [2022-07-19 21:12:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:47,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776488095] [2022-07-19 21:12:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:47,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:47,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776488095] [2022-07-19 21:12:47,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776488095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:47,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:47,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:12:47,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697943218] [2022-07-19 21:12:47,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:47,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:12:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:12:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:12:47,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2022-07-19 21:12:47,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:47,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:47,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2022-07-19 21:12:47,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:48,526 INFO L129 PetriNetUnfolder]: 618/3815 cut-off events. [2022-07-19 21:12:48,526 INFO L130 PetriNetUnfolder]: For 7408/7493 co-relation queries the response was YES. [2022-07-19 21:12:48,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11419 conditions, 3815 events. 618/3815 cut-off events. For 7408/7493 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 47898 event pairs, 32 based on Foata normal form. 2/3615 useless extension candidates. Maximal degree in co-relation 11374. Up to 392 conditions per place. [2022-07-19 21:12:48,560 INFO L132 encePairwiseOnDemand]: 106/119 looper letters, 77 selfloop transitions, 32 changer transitions 48/251 dead transitions. [2022-07-19 21:12:48,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 251 transitions, 2165 flow [2022-07-19 21:12:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:12:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:12:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 939 transitions. [2022-07-19 21:12:48,562 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7890756302521008 [2022-07-19 21:12:48,562 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 939 transitions. [2022-07-19 21:12:48,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 939 transitions. [2022-07-19 21:12:48,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:48,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 939 transitions. [2022-07-19 21:12:48,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:48,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:48,566 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:48,566 INFO L186 Difference]: Start difference. First operand has 200 places, 185 transitions, 1214 flow. Second operand 10 states and 939 transitions. [2022-07-19 21:12:48,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 251 transitions, 2165 flow [2022-07-19 21:12:48,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 251 transitions, 2031 flow, removed 47 selfloop flow, removed 17 redundant places. [2022-07-19 21:12:48,629 INFO L242 Difference]: Finished difference. Result has 192 places, 196 transitions, 1390 flow [2022-07-19 21:12:48,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1390, PETRI_PLACES=192, PETRI_TRANSITIONS=196} [2022-07-19 21:12:48,630 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 68 predicate places. [2022-07-19 21:12:48,630 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 196 transitions, 1390 flow [2022-07-19 21:12:48,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:48,630 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:48,631 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] [2022-07-19 21:12:48,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:12:48,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash -679533185, now seen corresponding path program 3 times [2022-07-19 21:12:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:48,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123740577] [2022-07-19 21:12:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:49,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123740577] [2022-07-19 21:12:49,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123740577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:49,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:49,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 21:12:49,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608771128] [2022-07-19 21:12:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:49,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:12:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:49,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:12:49,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:12:49,016 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-19 21:12:49,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 196 transitions, 1390 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:49,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:49,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-19 21:12:49,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:49,844 INFO L129 PetriNetUnfolder]: 594/3620 cut-off events. [2022-07-19 21:12:49,844 INFO L130 PetriNetUnfolder]: For 6886/6971 co-relation queries the response was YES. [2022-07-19 21:12:49,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10656 conditions, 3620 events. 594/3620 cut-off events. For 6886/6971 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 44995 event pairs, 24 based on Foata normal form. 2/3422 useless extension candidates. Maximal degree in co-relation 10614. Up to 422 conditions per place. [2022-07-19 21:12:49,878 INFO L132 encePairwiseOnDemand]: 106/119 looper letters, 82 selfloop transitions, 31 changer transitions 34/239 dead transitions. [2022-07-19 21:12:49,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 239 transitions, 2155 flow [2022-07-19 21:12:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:12:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:12:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1100 transitions. [2022-07-19 21:12:49,879 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7703081232492998 [2022-07-19 21:12:49,880 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1100 transitions. [2022-07-19 21:12:49,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1100 transitions. [2022-07-19 21:12:49,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:49,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1100 transitions. [2022-07-19 21:12:49,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.66666666666667) internal successors, (1100), 12 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:49,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:49,885 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:49,886 INFO L186 Difference]: Start difference. First operand has 192 places, 196 transitions, 1390 flow. Second operand 12 states and 1100 transitions. [2022-07-19 21:12:49,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 239 transitions, 2155 flow [2022-07-19 21:12:49,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 239 transitions, 2120 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-07-19 21:12:49,952 INFO L242 Difference]: Finished difference. Result has 200 places, 195 transitions, 1487 flow [2022-07-19 21:12:49,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1487, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2022-07-19 21:12:49,953 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 76 predicate places. [2022-07-19 21:12:49,953 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 1487 flow [2022-07-19 21:12:49,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:49,953 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:49,954 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] [2022-07-19 21:12:49,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:12:49,954 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1566745033, now seen corresponding path program 4 times [2022-07-19 21:12:49,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:49,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563074555] [2022-07-19 21:12:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:49,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:50,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:50,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563074555] [2022-07-19 21:12:50,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563074555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:50,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:50,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:12:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363926112] [2022-07-19 21:12:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:12:50,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:12:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:12:50,205 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2022-07-19 21:12:50,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 1487 flow. Second operand has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:50,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:50,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2022-07-19 21:12:50,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:50,821 INFO L129 PetriNetUnfolder]: 597/3441 cut-off events. [2022-07-19 21:12:50,821 INFO L130 PetriNetUnfolder]: For 9583/9675 co-relation queries the response was YES. [2022-07-19 21:12:50,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10909 conditions, 3441 events. 597/3441 cut-off events. For 9583/9675 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 41202 event pairs, 33 based on Foata normal form. 4/3269 useless extension candidates. Maximal degree in co-relation 10864. Up to 342 conditions per place. [2022-07-19 21:12:50,863 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 46 selfloop transitions, 1 changer transitions 93/239 dead transitions. [2022-07-19 21:12:50,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 239 transitions, 2260 flow [2022-07-19 21:12:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:12:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:12:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 683 transitions. [2022-07-19 21:12:50,865 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8199279711884754 [2022-07-19 21:12:50,865 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 683 transitions. [2022-07-19 21:12:50,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 683 transitions. [2022-07-19 21:12:50,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:50,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 683 transitions. [2022-07-19 21:12:50,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.57142857142857) internal successors, (683), 7 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:50,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:50,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:50,867 INFO L186 Difference]: Start difference. First operand has 200 places, 195 transitions, 1487 flow. Second operand 7 states and 683 transitions. [2022-07-19 21:12:50,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 239 transitions, 2260 flow [2022-07-19 21:12:50,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 239 transitions, 2128 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-07-19 21:12:50,928 INFO L242 Difference]: Finished difference. Result has 194 places, 141 transitions, 804 flow [2022-07-19 21:12:50,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=194, PETRI_TRANSITIONS=141} [2022-07-19 21:12:50,928 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 70 predicate places. [2022-07-19 21:12:50,928 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 141 transitions, 804 flow [2022-07-19 21:12:50,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:50,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:12:50,929 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] [2022-07-19 21:12:50,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:12:50,929 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:12:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:12:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -509438613, now seen corresponding path program 5 times [2022-07-19 21:12:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:12:50,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223006874] [2022-07-19 21:12:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:12:50,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:12:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:12:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:12:51,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:12:51,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223006874] [2022-07-19 21:12:51,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223006874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:12:51,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:12:51,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:12:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691897114] [2022-07-19 21:12:51,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:12:51,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:12:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:12:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:12:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:12:51,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-07-19 21:12:51,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 141 transitions, 804 flow. Second operand has 14 states, 14 states have (on average 87.07142857142857) internal successors, (1219), 14 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:51,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:12:51,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-07-19 21:12:51,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:12:51,992 INFO L129 PetriNetUnfolder]: 142/1031 cut-off events. [2022-07-19 21:12:51,992 INFO L130 PetriNetUnfolder]: For 1931/1959 co-relation queries the response was YES. [2022-07-19 21:12:51,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 1031 events. 142/1031 cut-off events. For 1931/1959 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9189 event pairs, 11 based on Foata normal form. 5/982 useless extension candidates. Maximal degree in co-relation 2963. Up to 96 conditions per place. [2022-07-19 21:12:51,999 INFO L132 encePairwiseOnDemand]: 108/119 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2022-07-19 21:12:51,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 145 transitions, 962 flow [2022-07-19 21:12:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:12:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:12:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1063 transitions. [2022-07-19 21:12:52,004 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-07-19 21:12:52,004 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1063 transitions. [2022-07-19 21:12:52,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1063 transitions. [2022-07-19 21:12:52,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:12:52,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1063 transitions. [2022-07-19 21:12:52,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.58333333333333) internal successors, (1063), 12 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:52,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:52,008 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:52,008 INFO L186 Difference]: Start difference. First operand has 194 places, 141 transitions, 804 flow. Second operand 12 states and 1063 transitions. [2022-07-19 21:12:52,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 145 transitions, 962 flow [2022-07-19 21:12:52,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 145 transitions, 849 flow, removed 20 selfloop flow, removed 23 redundant places. [2022-07-19 21:12:52,022 INFO L242 Difference]: Finished difference. Result has 174 places, 0 transitions, 0 flow [2022-07-19 21:12:52,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=174, PETRI_TRANSITIONS=0} [2022-07-19 21:12:52,023 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 50 predicate places. [2022-07-19 21:12:52,023 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 0 transitions, 0 flow [2022-07-19 21:12:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 87.07142857142857) internal successors, (1219), 14 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:12:52,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-07-19 21:12:52,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-19 21:12:52,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-19 21:12:52,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-07-19 21:12:52,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-07-19 21:12:52,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-19 21:12:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:12:52,029 INFO L356 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 2, 1, 1, 1] [2022-07-19 21:12:52,034 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:12:52,034 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:12:52,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:12:52 BasicIcfg [2022-07-19 21:12:52,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:12:52,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:12:52,039 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:12:52,040 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:12:52,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:12:22" (3/4) ... [2022-07-19 21:12:52,042 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:12:52,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-19 21:12:52,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-19 21:12:52,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-19 21:12:52,056 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 179 nodes and edges [2022-07-19 21:12:52,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2022-07-19 21:12:52,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-19 21:12:52,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:12:52,120 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:12:52,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:12:52,120 INFO L158 Benchmark]: Toolchain (without parser) took 32405.50ms. Allocated memory was 123.7MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 85.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 779.5MB. Max. memory is 16.1GB. [2022-07-19 21:12:52,121 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 94.7MB in the beginning and 94.6MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:12:52,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.36ms. Allocated memory is still 123.7MB. Free memory was 85.5MB in the beginning and 78.9MB in the end (delta: 6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 21:12:52,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.82ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 74.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:12:52,122 INFO L158 Benchmark]: Boogie Preprocessor took 63.22ms. Allocated memory is still 123.7MB. Free memory was 74.7MB in the beginning and 71.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:12:52,122 INFO L158 Benchmark]: RCFGBuilder took 1820.27ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 71.2MB in the beginning and 64.2MB in the end (delta: 7.1MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2022-07-19 21:12:52,122 INFO L158 Benchmark]: TraceAbstraction took 29725.58ms. Allocated memory was 153.1MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 64.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 723.9MB. Max. memory is 16.1GB. [2022-07-19 21:12:52,123 INFO L158 Benchmark]: Witness Printer took 80.72ms. Allocated memory is still 2.5GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 21:12:52,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 94.7MB in the beginning and 94.6MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 622.36ms. Allocated memory is still 123.7MB. Free memory was 85.5MB in the beginning and 78.9MB in the end (delta: 6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.82ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 74.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.22ms. Allocated memory is still 123.7MB. Free memory was 74.7MB in the beginning and 71.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1820.27ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 71.2MB in the beginning and 64.2MB in the end (delta: 7.1MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * TraceAbstraction took 29725.58ms. Allocated memory was 153.1MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 64.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 723.9MB. Max. memory is 16.1GB. * Witness Printer took 80.72ms. Allocated memory is still 2.5GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 29.6s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1070 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1070 mSDsluCounter, 1318 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2021 mSDsCounter, 710 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5360 IncrementalHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 710 mSolverCounterUnsat, 215 mSDtfsCounter, 5360 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1496occurred in iteration=11, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1511 NumberOfCodeBlocks, 1511 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1493 ConstructedInterpolants, 0 QuantifiedInterpolants, 9408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:12:52,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE